Diamond-like Carbon Coating (i.e., Dlc) Patents (Class 427/249.7)
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Patent number: 6649031Abstract: A corrosion resistant coated fuel cell plate and method of making the same are embodied in a metal plate provided with a multilayered conductive coating and then with an overcoating which fills in fine scale porosities in the coating. In one preferred embodiment, the overcoating is amorphous graphite applied through a deposition process. In another preferred embodiment, the overcoating is a thin layer of oxide created by a chemical anodization process.Type: GrantFiled: October 8, 1999Date of Patent: November 18, 2003Assignee: Hybrid Power Generation Systems, LLCInventors: Zafar Iqbal, Dave Narasimhan, James V. Guiheen, Timothy Rehg
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Patent number: 6638570Abstract: A process includes coating a substrate with a hydrophobic coating system including highly tetrahedral amorphous carbon that is a form of diamond-like carbon (DLC). In certain embodiments, the coating system is deposited on the substrate in a manner to increase its hydrophobicity. In certain embodiments, the coating system is deposited in a manner such that it has an average hardness of at least about 10 GPa, more preferably from about 20-80 GPa. In certain embodiments, the coating system includes first and second DLC inclusive layers that are deposited using one or more ion beam deposition devices, wherein different gases are used to deposit the respective DLC inclusive layers such that the overlying layer has greater scratch resistance characteristics than the underlying layer which functions as an anchoring layer.Type: GrantFiled: August 29, 2001Date of Patent: October 28, 2003Assignee: Guardian Industries Corp.Inventor: Vijayen S. Veerasamy
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Patent number: 6638569Abstract: An apparatus for coating a substrate with a diamond like coating or other vacuum depositable material comprises a chamber 11 having, or acting as, an anode, means for supporting a substrate 15 in the chamber, means for establishing a low pressure atmosphere containing a hydrocarbon-based gas in the chamber, and a radio frequency source 12 for establishing a gas plasma in the chamber, the substrate 15 acting as a cathode.Type: GrantFiled: June 25, 2001Date of Patent: October 28, 2003Inventors: James Andrew McLaughlin, John McCune Anderson, Paul Damian Maguire
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Publication number: 20030180461Abstract: Carbon nanotubes are directly grown on a substrate surface having three metal layers thereon by a thermal chemical vapor deposition at low-temperature, which can be used as an electron emission source for field emission displays. The three layers include a layer of an active metal catalyst sandwiched between a thick metal support layer formed on the substrate and a bonding metal layer. The active metal catalyst is iron, cobalt, nickel or an alloy thereof; the metal support and the bonding metal independently are Au, Ag, Cu, Pd, Pt or an alloy thereof; and they can be formed by sputtering, chemical vapor deposition, physical vapor deposition, screen printing or electroplating.Type: ApplicationFiled: September 10, 2002Publication date: September 25, 2003Applicant: Industrial Technology Research InstituteInventors: Chien-Liang Hwang, Jack Ting, Jih-Shun Chiang, Chuan Chuang
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Patent number: 6610360Abstract: Scratch resistance (SR) of a coated article is improved by buffing the coated article after deposition of the layer(s) of the coating. For example, in certain embodiments a diamond-like carbon (DLC) inclusive layer(s) is deposited on a substrate (directly or indirectly), and thereafter buffed in order to improve its scratch resistance.Type: GrantFiled: November 28, 2001Date of Patent: August 26, 2003Assignee: Guardian Industries Corp.Inventors: Rudolph Hugo Petrmichl, Fabio Reis
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Patent number: 6602371Abstract: A method of making a vehicle windshield. First and second flat glass sheets are bent together into a shape desired for the windshield. The bent sheets are separated, and an interlayer (e.g., PVB) positioned therebetween. After the sheets have been heat laminated to one another via the interlayer, the convex tin side of the outer sheet is ion beam milled to shave off a portion thereof. Then, a diamond-like carbon (DLC) inclusive coating is deposited using an ion beam(s) on the milled convex shaped surface of the laminate to produce a windshield. In certain optional embodiments, the windshield may be hydrophobic in nature.Type: GrantFiled: February 27, 2001Date of Patent: August 5, 2003Assignee: Guardian Industries Corp.Inventor: Vijayen S. Veerasamy
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Patent number: 6596339Abstract: A method and apparatus for the non-contact in-situ temperature measurement of a material layer during chemical vapor deposition of the material on an underlying substrate are provided. Magnitude modulated UV light having a plurality of separated spectral components is directed at the material being deposited on the substrate. The modulated UV light has a plurality of wavelengths corresponding to different temperature dependencies of absorptance in the deposited material. The separated spectral components are within transparency spectral windows of a plasma media contained in the CVD reactor. A portion of the magnitude modulated UV light is directed as a reference into a comparison device, such as a spectrophotometer. Light reflected from the deposited material is also directed at the comparison device for comparison with the reference light. That is, the magnitudes of the magnitude modulated components of the reflected light and the reference light are compared at more than one spectral component.Type: GrantFiled: August 21, 2001Date of Patent: July 22, 2003Assignee: National Semiconductor CorporationInventor: Mikhail Yaroslavsky
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Publication number: 20030124449Abstract: A process for manufacturing an electrophotographic photosensitive member is disclosed in which a source gas is decomposed by the use of a high-frequency power in a rector to deposit sequentially on a conductive substrate i) a photoconductive layer comprised of an amorphous material composed chiefly of silicon atoms and ii) a surface layer comprised of an amorphous material composed chiefly of carbon atoms and containing hydrogen atoms. The process has the steps of forming the photoconductive layer in a first reactor, and forming the surface layer in a second reactor. This process can produce an electrophotographic photosensitive member having an a-Si photoconductive layer and a-C:H surface layer or a-C:H(Si) surface layer in a good efficiency and at a low cost. Also disclosed is an electrophotographic photosensitive member manufacturing apparatus which carries out the process.Type: ApplicationFiled: June 27, 2002Publication date: July 3, 2003Inventors: Ryuji Okamura, Junichiro Hashizume, Kazuto Hosoi
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Publication number: 20030104122Abstract: A system and method for treating, such as insulating, piezoelectric components, such as piezoelectric micro-actuators for use in magnetic hard disk drives is disclosed, different embodiments involving material dipping, spraying, pin application, and chemical vapor deposition.Type: ApplicationFiled: March 13, 2002Publication date: June 5, 2003Inventors: Masashi Shiraishi, Ming Gao Yao, Tamon Kasajima
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Patent number: 6572935Abstract: A plasma-based method for the deposition of diamond-like carbon (DLC) coatings is described. The process uses a radio-frequency inductively coupled discharge to generate a plasma at relatively low gas pressures. The deposition process is environmentally friendly and scaleable to large areas, and components that have geometrically complicated surfaces can be processed. The method has been used to deposit adherent 100-400 nm thick DLC coatings on metals, glass, and polymers. These coatings are between three and four times harder than steel and are therefore scratch resistant, and transparent to visible light. Boron and silicon doping of the DLC coatings have produced coatings having improved optical properties and lower coating stress levels, but with slightly lower hardness.Type: GrantFiled: October 27, 1999Date of Patent: June 3, 2003Assignee: The Regents of the University of CaliforniaInventors: Xiao-Ming He, Deok-Hyung Lee, Michael A. Nastasi, Kevin C. Walter, Michel G. Tuszewski
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Patent number: 6572937Abstract: Fluorinated, diamond-like carbon (F-DLC) films are produced by a pulsed, glow-discharge plasma immersion ion processing procedure. The pulsed, glow-discharge plasma was generated at a pressure of 1 Pa from an acetylene (C2H2) and hexafluoroethane (C2F6) gas mixture, and the fluorinated, diamond-like carbon films were deposited on silicon <100>substrates. The film hardness and wear resistance were found to be strongly dependent on the fluorine content incorporated into the coatings. The hardness of the F-DLC films was found to decrease considerably when the fluorine content in the coatings reached about 20%. The contact angle of water on the F-DLC coatings was found to increase with increasing film fluorine content and to saturate at a level characteristic of polytetrafluoroethylene.Type: GrantFiled: November 30, 2000Date of Patent: June 3, 2003Assignee: The Regents of the University of CaliforniaInventors: Marko J. Hakovirta, Michael A. Nastasi, Deok-Hyung Lee, Xiao-Ming He
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Publication number: 20030099835Abstract: Scratch resistance (SR) of a coated article is improved by buffing the coated article after deposition of the layer(s) of the coating. For example, in certain embodiments a diamond-like carbon (DLC) inclusive layer(s) is deposited on a substrate (directly or indirectly), and thereafter buffed in order to improve its scratch resistance.Type: ApplicationFiled: November 28, 2001Publication date: May 29, 2003Inventors: Rudolph Hugo Petrmichl, Fabio Reis
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Patent number: 6565929Abstract: The method of manufacturing the magnetic medium for data storage comprising magnetic segments (5) for data storage which alternate regularly with nonmagnetic segments, which method comprises deposition on a substrate (1) from a nonmagnetic material a material having low or zero initial magnetization and capable of varying its magnetic characteristics under the effect of irradiation. The mentioned material is laid on the substrate (1) as a layer (2) in a thickness corresponding to one of the overall size values of any one of the magnetic segment (5) being formed. Then the applied layer (2) is selectively irradiated so as to vary the magnetic characteristics of the material of the layer (2) on the irradiated segments before forming the magnetic segments (5) each having a maximum overall size the ratio between which and any other overall size of this magnetic segment is from 3.5:1 to 15:1.Type: GrantFiled: October 10, 2001Date of Patent: May 20, 2003Assignee: Obschestvo s organichennoi otvetstvennostju “Laboratoria Ionnykh Nanotekhnology” (OOO “Labintech”)Inventors: Boris Aronovich Gurovich, Dmitry Losifovich Dolgy, Evgeny Zalmanovich Meylikhov, Evgeny Pavlovich Velikhov, Vladimir Borisovich Betelin, Evgenia Anatolievna Kuleshova, Evgeny Dmitrievich Olshansky, Boris Aronovich Aronzon, Alexandr Viktorovich Kalinin
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Patent number: 6565719Abstract: A method for making a magnetic disk comprises forming first and second protective carbon layers on a magnetic layer. The first protective carbon layer is predominantly SP3 carbon. The second protective carbon layer comprises about 50% or less SP3 carbon. The second protective carbon layer is very thin, e.g. between 0.1 and 1.0 nm thick. A lubricant layer (e.g. a perfluoropolyether lubricant) is applied to the second protective carbon layer. The second protective carbon layer facilitates improved cooperation between lubricant and the disk.Type: GrantFiled: June 27, 2000Date of Patent: May 20, 2003Assignee: Komag, Inc.Inventors: Bruce Lairson, Ching Jackie Tsoi, Wen Liu, Shigeto Hashimoto, Eric Woo Hock Yong, Tsutomu Tom Yamashita
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Patent number: 6565913Abstract: An adherent antimicrobial coating and method of making same comprising hydrogenated amorphous carbon and a dispersion of antimicrobial metal ions adapted to maintain a therapeutically effective zone of inhibition.Type: GrantFiled: July 24, 2001Date of Patent: May 20, 2003Assignee: Southwest Research InstituteInventors: James Arps, Geoffrey Dearnaley
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Patent number: 6558757Abstract: The invention relates to a method and a device for coating substrates in a vacuum, in which a plasma is generated from a target using a laser beam and ionized particles of the plasma are deposited on the substrate in the form of a layer, inert reactive gas or a gas mixture being supplied. The solution according to the invention is intended to provide a possible way of supplying gases or gas mixtures in a locally and temporally defined manner. According to the invention, this object is achieved by the fact that the gas or gas mixture is supplied to the plasma from and/or through a porous target, the intention being that the target is to have a temporary storage function on account of its porosity.Type: GrantFiled: March 19, 2001Date of Patent: May 6, 2003Assignee: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.Inventors: Hans-Joachim Scheibe, Carl-Friedrich Meyer, Bernd Schultrich, Holger Ziegele
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Patent number: 6531182Abstract: A substrate is coated with a coating system including diamond-like carbon (DLC) and at least one fluoro-alkyl silane (FAS) compound. In certain embodiments, a method of making a coated article includes providing a substrate; and forming a coating system on said substrate in a manner such that the coating system includes each of diamond-like carbon (DLC) and at least one fluoro-alkyl silane (FAS) compound.Type: GrantFiled: June 20, 2001Date of Patent: March 11, 2003Assignee: Guardian Industries Corp.Inventors: Vijayen S. Veerasamy, Rudolph Hugo Petrmichl
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Patent number: 6528115Abstract: A hard carbon thin film formed on a substrate has a graded structure in which a ratio of sp2 to sp3 carbon-carbon bonding in the thin film decreases in its thickness direction from a thin film/substrate interface toward a surface of the thin film. A method of forming the thin film involves varying the film-forming ion species over time to produce the composition gradient or structural gradient in the thickness direction of the thin film.Type: GrantFiled: February 10, 2000Date of Patent: March 4, 2003Assignee: Sanyo Electric Co., Ltd.Inventors: Hitoshi Hirano, Yoichi Domoto, Keiichi Kuramoto
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Publication number: 20030035894Abstract: A layer system, in particular for tools or machine components operated under insufficient lubrication or under dry operation conditions, is proposed, which system, starting from the base body (1), comprises a hard substance layer system (2), subsequently a metallic layer (3) and finally a slide layer system (4), the last mentioned preferably made of Carbide, in particular of Tungstencarbide or Chromiumcarbide and dispersed Carbon.Type: ApplicationFiled: April 17, 2002Publication date: February 20, 2003Applicant: Unaxis Trading AG.Inventors: Volker Derflinger, Hans Braendle, Christian Wohlrab
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Patent number: 6514565Abstract: An amorphous carbon film, preferably disposed on and substantially filling the pores in a porous anodized aluminum outer surface, wherein the amorphous carbon film comprises as an integral component an effective amount of a lubricity-increasing agent, preferably sulfur.Type: GrantFiled: April 6, 2001Date of Patent: February 4, 2003Assignee: Southwest Research InstituteInventors: Geoffrey Dearnaley, Mark Van Dyke
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Patent number: 6508416Abstract: An electromagnetic fuel injector having improved wear characteristics comprises a body having a fuel inlet and a fuel outlet. A valve seat is sealably connected to the body, and a moveable valve member positioned at the fuel outlet for controlling the flow of fuel from the outlet comprises a valve outlet element that provides a sealing interface with the valve seat. The valve member and included valve outlet element further comprise wear surfaces that are subject to repeated impact and/or sliding contact; at least a portion of these wear surfaces comprise an applied layer of diamond-like carbon (DLC) stabilized by inclusion of greater than 30 weight percent of a carbide-forming material selected from the group consisting of silicon, titanium, and tungsten.Type: GrantFiled: April 28, 2000Date of Patent: January 21, 2003Assignee: Delphi Technologies, Inc.Inventors: Noreen Louise Mastro, Jeffrey Mark Noll, David Wesley Rogers, Robert Halsall, Stephen Joel Harris, Anita Miriam Weiner
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Patent number: 6506451Abstract: A composite structure having a substantially monocrystalline growth substrate and at least one monocrystalline or polycrystalline layer of diamond or diamond-like material arranged on a surface of the growth substrate, the surface of the growth substrate being provided with crystal growth nuclei having crystal axes which exhibit an inclination of not more than 10%, preferably not more than 7%, with respect to corresponding axes of the crystal lattice of the growth substrate, and a process for producing such a composite structure in which the growth substrate is pretreated and growth nuclei are deposited from a nucleating gas phase of known composition for depositing layers of diamond or diamond-like material, in which during the nucleation the growth substrate is raised to a negative electrical potential relative to the nucleating gas phase.Type: GrantFiled: May 9, 1996Date of Patent: January 14, 2003Assignee: DaimlerChrysler AGInventors: Frank Stubhan, Hans-Juergen Fuesser, Mona Ferguson
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Patent number: 6503579Abstract: The invention provides a plasma CVD method and device which can form a uniform or substantially uniform film on an outer surface of an object independently of the shape of the object, and also provides an electrode used in the method and device. More specifically, a plasma is formed from a deposition material gas by supplying an electric power to the gas, and a film is formed on the outer surface of a hollow object having an opening under the plasma. The electrodes for supplying the electric power for forming the gas plasma include an internal electrode arranged in an inner space of the hollow object and an external electrode arranged outside the object. The internal electrode can selectively have a reduced form allowing passage of the electrode through the opening of the hollow object and an enlarged form predetermined in accordance with the volume and shape of the inner space of the object.Type: GrantFiled: November 2, 1999Date of Patent: January 7, 2003Assignee: Nissin Electric Co., Ltd.Inventors: Yasuo Murakami, Takahiro Nakahigashi
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Publication number: 20020192371Abstract: A substrate is coated with a low-E coating system including at least one infrared (IR) reflective layer. A diamond-like carbon (DLC) inclusive protective coating system (e.g., including at least one highly tetrahedral amorphous carbon (ta-C) inclusive layer having sp3 carbon-carbon bonds) is provided on the substrate over at least the IR reflective layer in order to make the low-E coating system scratch resistant, abrasion resistant, and generally mechanically durable. The DLC inclusive protective coating system may be hydrophobic, hydrophillic, or neutral in different embodiments of the invention. Optionally, at least one fluoro-alkyl silane (FAS) compound inclusive layer may be provided on the substrate over at least one of the DLC inclusive layer(s) in hydrophobic embodiments in order to increase contact angle &thgr; of the coated article.Type: ApplicationFiled: June 20, 2002Publication date: December 19, 2002Applicant: Guardian Industries Corp.Inventors: Vijayen S. Veerasamy, Rudolph Hugo Petrmichl, Scott V. Thomsen
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Patent number: 6491987Abstract: A process for depositing a diamond-like carbon (DOC) inclusive layer having surface roughness on a substrate is provided. The surface roughness of the DOC inclusive layer improves hydrophobicity, and is thus advantageous in certain instances. In certain embodiments, the layer has an initial contact angle of at least 100 degrees, a surface energy of no more than about 20.2 mN/m, and/or an average hardness of at least about 10 GPa.Type: GrantFiled: July 3, 2001Date of Patent: December 10, 2002Assignee: Guardian Indusries Corp.Inventor: Vijayen S. Veerasamy
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Publication number: 20020172765Abstract: The back side space of a mouth ring for forming a honeycomb-shaped green product is evacuated by means of a pressure difference-creating means constructed of a pressure regulating chamber and a pump, and then, the pressure in the back side space of the mouth ring is set to be tenth or below of the pressure in the front space of the mouth ring. Then, a raw material gas is introduced and excited to generate a plasma raw material gas, which is introduced into the mouth ring efficiently commensurate with the pressure difference created by means of the pressure difference-creating means. As a result, a thin film made of diamond or diamond-like carbon is made in the mouth ring in good quality.Type: ApplicationFiled: May 13, 2002Publication date: November 21, 2002Applicant: NGK Insulators, Ltd.Inventors: Yukinori Nakamura, Yoshimasa Kondo
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Patent number: 6475573Abstract: A substrate is coated with a coating system including at least one diamond-like carbon (DLC) inclusive layer(s) using an ion beam deposition technique. Prior and/or during the ion beam deposition of the DLC inclusive layer, the substrate (e.g., glass substrate) is heated to a temperature of from about 100-400 degrees C. so that at least a surface of the substrate is heated when the DLC inclusive layer(s) is deposited thereon via the ion beam deposition technique. This heating may result in improved adherence of a coating system to the underlying substrate.Type: GrantFiled: November 1, 2000Date of Patent: November 5, 2002Assignee: Guardian Industries Corp.Inventors: Vijayen S. Veerasamy, Rudolph Hugo Petrmichl
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Patent number: 6475565Abstract: The invention relates to a process for producing a clothing wire which is suitable for fitting to an opening-cylinder base body, wherein a raw wire which is customarily used to produce clothing wire is processed on end to form a wire coil, in which the teeth of the wire are perpendicular to the coil axis and which has a diameter which corresponds to the diameter of the opening-cylinder base body or differs by at most ±5% from the diameter of the opening-cylinder base body, and the wire coil is pushed loosely onto a support device and, together with this device, is introduced into an electroplating unit, the process steps which are customarily used for the chemical deburring of a raw wire and the nickel-diamond coating of a clothed opening cylinder taking place in the electroplating unit, and the clothing wire being removed from the electroplating unit.Type: GrantFiled: October 26, 2000Date of Patent: November 5, 2002Assignee: Elektroschmelzwerk Kempten GmbHInventors: Jörg Lukschandel, Manfred Menge, Jürgen Meyer
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Patent number: 6472017Abstract: A substrate is coated with a hydrophobic coating system including diamond-like carbon (DLC) and at least one fluoro-alkyl silane (FAS) compound. In certain embodiments, the coating system includes an FAS inclusive layer provided over at least one DLC inclusive layer in order to increase the initial contact angle of the coated article. At least the FAS inclusive layer may be heated (i.e., thermally cured) to an extent sufficient to at least one of: (a) improve the initial contact angle &thgr; of the resulting coated article, (b) render the hydrophobic nature of the resulting coated article more stable when exposed to solution(s)/material(s) such as hexane and/or isopropyl alcohol, and/or (c) improve bonding characteristics of the FAS inclusive layer within itself and/or between the FAS inclusive layer and a layer immediately beneath it.Type: GrantFiled: June 11, 2001Date of Patent: October 29, 2002Assignee: Guardian Industries Corp.Inventors: Vijayen S. Veerasamy, Rudolph Hugo Petrmichl, Scott V. Thomsen
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Patent number: 6472062Abstract: An improved non-sticking diamond-like nanocomposition includes networks of a-C:H and a-Si:O, wherein the H-concentration is between 85% and 125% of the C-concentration. The composition includes preferably 25 to 35 at % of C, 30 to 40 at % of H, 25 to 30 at % of Si, and 10 to 15 at % of O.Type: GrantFiled: December 20, 1999Date of Patent: October 29, 2002Assignee: N.V. Bekaert S.A.Inventors: Dominique Neerinck, Peter Persoone, Marc Sercu
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Patent number: 6451389Abstract: Systems to achieve both more uniform and particle free DLC deposition is disclosed which automatically cycles between modes to effect automatic removal of carbon-based buildups or which provides barriers to achieve proper gas flow involves differing circuitry and design parameter options. One ion source may be used in two different modes whether for DLC deposition or not through automatic control of gas flow types and rates and through the control of the power applied to achieve maximum throughput or other desired processing goals. Arcing can be controlled and even permitted to optimize the overall results achieved.Type: GrantFiled: April 17, 2000Date of Patent: September 17, 2002Assignee: Advanced Energy Industries, Inc.Inventors: Michael S. Amann, Michael Kishinevsky, Andrew Shabalin, Colin Quinn
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Publication number: 20020127404Abstract: A substrate is coated with a layer(s) or coating(s) that includes, for example, amorphous carbon in a form of diamond-like carbon (DLC). In certain embodiments, the DLC inclusive layer may be doped with at least one polar inducing dopant (e.g., Boron, Nitrogen, and/or any other suitable polar inducing dopant) in order to make the layer more polar and thus more hydrophilic so as to have a lower contact angle &thgr;. In other embodiments, where such doping is optional, the DLC may be exposed to ultraviolet (UV) radiation in a manner sufficient to cause the contact angle &thgr; of the DLC layer to drop into a hydrophilic range (e.g., less than or equal to about 20 degrees).Type: ApplicationFiled: November 15, 2001Publication date: September 12, 2002Inventor: Vijayen S. Veerasamy
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Publication number: 20020098285Abstract: Fluorinated, diamond-like carbon (F-DLC) films are produced by a pulsed, glow-discharge plasma immersion ion processing procedure. The pulsed, glow-discharge plasma was generated at a pressure of 1 Pa from an acetylene (C2H2) and hexafluoroethane (C2F6) gas mixture, and the fluorinated, diamond-like carbon films were deposited on silicon <100>substrates. The film hardness and wear resistance were found to be strongly dependent on the fluorine content incorporated into the coatings. The hardness of the F-DLC films was found to decrease considerably when the fluorine content in the coatings reached about 20%. The contact angle of water on the F-DLC coatings was found to increase with increasing film fluorine content and to saturate at a level characteristic of polytetrafluoroethylene.Type: ApplicationFiled: November 30, 2000Publication date: July 25, 2002Inventors: Marko J. Hakovirta, Michael A. Nastasi, Deok-Hyung Lee, Xiao-Ming He
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Patent number: 6423384Abstract: The present invention generally provides a method for depositing a low dielectric constant amorphous carbon film on a substrate or other workpiece using high density plasma chemical vapor deposition (HDP-CVD) techniques. Specifically, the present invention provides a method for forming an amorphous carbon film having a low dielectric constant of less than about 3.0 and a high thermal stability at a temperature of at least about 400° C. In a preferred embodiment, the film is deposited using methane (CH4) and argon in a HDP-CVD reactor. The amorphous carbon film formed according to the invention is useful for many applications in ultra large scale integration (ULSI) structures and devices, such as for example, an inter-metal dielectric material and an anti-reflective coating useful for patterning sub-micron interconnect features.Type: GrantFiled: June 25, 1999Date of Patent: July 23, 2002Assignee: Applied Materials, Inc.Inventors: Kasra Khazeni, Eugene Tzou, Zhengquan Tan
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Patent number: 6419997Abstract: A hard carbon film (15) is formed directly or through an intermediate layer for enhancing adhesion over an inner surface (11b) of a guide bush (11) for holding a workpiece (51) rotatably and axially slidable on an automatic lathe at a position near a cutting tool, to be in sliding contact with the workpiece (51) or directly or through an intermediate layer for enhancing adhesion on the surface of a superhard lining fixed to the inner surface (11b). The guide bush (11) has remarkably enhanced durability and prevents damaging the workpiece (51) and seizing that makes a machining operation impossible even when the guide bush (11) is used for an extended period of time and when the automatic lathe operates for heavy machining.Type: GrantFiled: February 28, 2000Date of Patent: July 16, 2002Assignee: Citizen Watch Co., Ltd.Inventors: Yukio Miya, Osamu Sugiyama, Ryota Koike, Takashi Toida, Sosaku Kimura, Kunihiko Kokubo
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Patent number: 6416816Abstract: A substrate is coated with a coating system including at least one diamond-like carbon (DLC) inclusive layer. In certain embodiments, the coating system includes an anti-reflective layer, a DLC inclusive layer provided for hardness/durability purposes, a primer layer, and an FAS inclusive hydrophobic layer provided over the primer layer. The anti-reflective layer is provided in order to reduce visible light reflections off of the resulting coated article and thus to improve visible transmission of the article. In certain embodiments, the primer layer may be provided in order to enable improved adhesion between the FAS inclusive layer and the DLC inclusive layer that is provided for hardness/durability. In certain embodiments, each of the anti-reflective layer, the DLC inclusive layer, and/or the primer layer may include DLC for purposes described herein. In certain alternative embodiments, the primer and FAS layers need not be provided.Type: GrantFiled: June 11, 2001Date of Patent: July 9, 2002Assignee: Guardian Industries Corp.Inventors: Vijayen S. Veerasamy, Rudolph Hugo Petrmichl, Scott V. Thomsen
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Publication number: 20020063055Abstract: A method for improving the anchoring of liquid crystals on carbon alignment layers used in liquid crystal displays involves exposing the alignment layer to hydrogen atoms. The atomic hydrogen exposure passivates the surface of the carbon layer to stabilize the anchoring of the subsequently deposited liquid crystals. The substrate on which the carbon layer is supported is located beneath a stretched tungsten filament, and the substrate and filament are located in a vacuum chamber containing hydrogen gas. The heating of the tungsten filament by an appropriate power source dissociates the hydrogen gas into hydrogen atoms and the hydrogen atoms contact the surface of the carbon layer. The process is applicable to stabilize carbon alignment layers that have been formed by directional deposition of carbon, as well as carbon alignment layers where the alignment is caused by a separate ion irradiation step after the carbon layer is formed.Type: ApplicationFiled: November 30, 2000Publication date: May 30, 2002Applicant: International Business Machines CorporationInventors: Yoshimine Katoh, Yoshiki Nakagawa, Shuhichi Odahara, Mahesh Govind Samant
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Patent number: 6395333Abstract: A method of making a coated article, the method including depositng a diamond-like carbon (DLC) layer or coating on a substrate. In certain example embodiments, the coating has a high contact angle.Type: GrantFiled: August 13, 2001Date of Patent: May 28, 2002Assignee: Guardian Industries Corp.Inventor: Vijayen S. Veerasamy
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Publication number: 20020048638Abstract: A method of producing diamond or diamond like films in which a negative bias is established on a substrate with an electrically conductive surface in a microwave plasma chemical vapor deposition system. The atmosphere that is subjected to microwave energy includes a source of carbon, nitrogen and hydrogen. The negative bias is maintained on the substrate through both the nucleation and growth phase of the film until the film is continuous. Biases between −100V and −200 are preferred. Carbon sources may be one or more of CH4, C2H2 other hydrocarbons and fullerenes.Type: ApplicationFiled: July 14, 1999Publication date: April 25, 2002Inventors: DIETER M. GRUEN, ALAN R. KRAUSS, M. Q. DING, ORLANDO AUCIELLO
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Publication number: 20020041930Abstract: A method and article of manufacture of amorphous diamond-like carbon. The method involves providing a substrate in a chamber, providing a mixture of a carbon containing gas and hydrogen gas with the mixture adjusted such that the atomic molar ratio of carbon to hydrogen is less than 0.3, including all carbon atoms and all hydrogen atoms in the mixture. A plasma is formed of the mixture and the amorphous diamond-like carbon film is deposited on the substrate. To achieve optimum bonding an intervening bonding layer, such as Si or SiO2, can be formed from SiH4 with or without oxidation of the layer formed.Type: ApplicationFiled: March 14, 2001Publication date: April 11, 2002Inventors: Ali Erdemir, George R. Fenske, Osman Levent Eryilmaz, Richard H. Lee
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Patent number: 6368664Abstract: A glass substrate is ion beam milled in order to smoothen the same and/or reduce or remove nano-cracks in the substrate surface before a coating system (e.g., diamond-like carbon (DLC) inclusive coating system) is deposited thereon. It has been found that such ion beam milling of the substrate prior to deposition of the coating system improves adherence of the coating system to the underlying milled substrate. Moreover, it has surprisingly been found that such ion beam milling of the substrate results in a more scratch resistant coated article when a DLC inclusive coating system is thereafter ion beam deposited on the milled substrate. Amounts sodium (Na) may also be reduced at the surface of the substrate by such milling.Type: GrantFiled: November 2, 2000Date of Patent: April 9, 2002Assignee: Guardian Industries Corp.Inventors: Vijayen S. Veerasamy, Rudolph Hugo Petrmichl
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Publication number: 20020028289Abstract: A substrate is coated with a hydrophobic coating system including highly tetrahedral amorphous carbon that is a form of diamond-like carbon (DLC). In certain embodiments, the coating system is deposited on the substrate in a manner to increase its hydrophobicity. In certain embodiments, the coating system is deposited in a manner such that it has an average hardness of at least about 10 GPa, more preferably from about 20-80 GPa. In certain embodiments, the coating system includes first and second DLC inclusive layers that are deposited using one or more ion beam deposition devices, wherein different gases are used to deposit the respective DLC inclusive layers such that the overlying layer has greater scratch resistance characteristics than the underlying layer which functions as an anchoring layer.Type: ApplicationFiled: August 29, 2001Publication date: March 7, 2002Applicant: Guardian Industries Corporation.Inventor: Vijayen S. Veerasamy
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Publication number: 20020026899Abstract: An apparatus for coating a substrate with a diamond like coating or other vacuum depositable material comprises a chamber 11 having, or acting as, an anode, means for supporting a substrate 15 in the chamber, means for establishing a low pressure atmosphere containing a hydrocarbon-based gas in the chamber, and a radio frequency source 12 for establishing a gas plasma in the chamber, the substrate 15 acting as a cathode.Type: ApplicationFiled: June 25, 2001Publication date: March 7, 2002Inventors: James Andrew McLaughlin, John McCune Anderson, Paul Damian Maguire
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Patent number: 6340505Abstract: A hydrogenated or fluorinated carbon protective film is formed on a disk through a plasma CVD method by use of a hydrocarbon-containing reaction gas as a raw material, where the disk comprises a non-magnetic substrate on which a non-magnetic undercoat film and a magnetic film are successively formed, wherein the protective film has a thickness of 2.2 g/cm3 or more.Type: GrantFiled: December 22, 1999Date of Patent: January 22, 2002Assignee: Showa Denko Kabushiki KaishaInventors: Mikio Suzuki, Noriyuki Miyamoto, Emi Shimaoka, Kimie Takagi
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Patent number: 6338881Abstract: A method for applying a diamond-like coating to at least one substrate includes arranging at least one substrate in a reaction chamber so that field lines extend between the at least one substrate and a ground electrode and perpendicularly intersect a clamping surface defined by the at least one substrate or the field lines perpendicularly intersect the clamping surface at an end of the at least one substrate closest to the clamping surface; and applying a diamond-like layer to the at least one substrate by plasma-enhanced chemical vapor deposition by exciting a deposition gas atmosphere with electromagnetic radiation and producing an electrical bias voltage between the substrate and at least one ground electrode.Type: GrantFiled: March 7, 1999Date of Patent: January 15, 2002Assignee: Saxonia Umformtechnik GmbHInventors: Michael Sellschopp, Guenther Durst, Stefan Krall
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Publication number: 20010053412Abstract: A substrate is coated with a hydrophobic coating system including diamond-like carbon (DLC) and at least one fluoro-alkyl silane (FAS) compound. In certain embodiments, the coating system includes an FAS inclusive layer provided over at least one DLC inclusive layer in order to increase the initial contact angle of the coated article. At least the FAS inclusive layer may be heated (i.e., thermally cured) to an extent sufficient to at least one of: (a) improve the initial contact angle &thgr; of the resulting coated article, (b) render the hydrophobic nature of the resulting coated article more stable when exposed to solution(s)/material(s) such as hexane and/or isopropyl alcohol, and/or (c) improve bonding characteristics of the FAS inclusive layer within itself and/or between the FAS inclusive layer and a layer immediately beneath it.Type: ApplicationFiled: June 11, 2001Publication date: December 20, 2001Inventors: Vijayen S. Veerasamy, Rudolph Hugo Petrmichl, Scott V. Thomsen
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Patent number: 6331332Abstract: In accordance with the present invention, there is provided a process for depositing diamond-like carbon (DLC) films by cathodic arc evaporation (CAE), wherein the high energy of CAE metal ions causes the cracking reaction of the hydrocarbon gases fed into the vacuum reaction chamber and then results in the deposition of DLC films having high hardness and lubrication. Due to the metallic constituents doped in the DLC films, the films also have good toughness. Moreover, prior to the feeding of hydrocarbon gases for the DLC deposition, the same metal arc source may deposits one or more interlayers of metal, metal nitride, or metal carbide on the substrate so as to further enhance the adhesion of the DLC films to be deposited.Type: GrantFiled: November 5, 1999Date of Patent: December 18, 2001Inventor: Da-Yung Wang
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Publication number: 20010048095Abstract: A process for forming a thermally stable low-dielectric constant material is provided. A gas mixture is prepared to form a fluorinated amorphous carbon (a-C:F) material. The gas mixture is mixed with a boron-containing gas.Type: ApplicationFiled: July 1, 1998Publication date: December 6, 2001Inventor: STEVEN N. TOWLE
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Patent number: 6312766Abstract: Ion beam deposition, using a carbon- and fluorine-containing source or sources, is used to form a fluorinated diamond-like carbon layer in a device, the FDLC layer exhibiting a dielectric constant of 3.0 or less along with a thermal stability of at least 400° C. During the ion beam deposition, due to the unique nature of carbon chemistry, the carbon atoms combine at the substrate surface to form all possible combinations of sp1, sp2 and sp3 bonds. However, ion beam etching occurs along with deposition, such that atoms of the weaker carbon structures—carbyne and graphite—are removed preferentially. This leads to a buildup of a diamond-like, sp3-bonded structure with fluorine atoms, it is believed, substituted for some carbon atoms within the structure, this structure providing the desirable properties of the layer.Type: GrantFiled: December 4, 1998Date of Patent: November 6, 2001Assignee: Agere Systems Guardian Corp.Inventors: Chien-Shing Pai, Wei Zhu
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Patent number: 6224952Abstract: An abrasion-proof and static-erasing coating is formed on the contact surface of a contact image sensor. The coating comprises a first film having a high hardness and a low conductivity, a second film formed on the first film and having a low hardness and a high conductivity, and a third film having a high hardness and a high resistivity providing an abrasion-proof insulating external surface.Type: GrantFiled: April 25, 1997Date of Patent: May 1, 2001Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Kenji Itoh