Abstract: In the manufacture of semiconductor device packages, a jumper chip, comprising a substrate and a gold alloy attached thereto, with improved bonding characteristics is provided. By applying a coating of gold on both sides of the gold alloy prior to attaching the gold alloy to the substrate, the bonding of the gold alloy to the substrate and to the gold coating of the cavity in a device package is improved. Scrubbing of the jumper chip on the gold coating of the cavity is obviated. The additional gold layers applied to the gold alloy are distinct and visible on a photograph of a cross-section of the jumper chip.

Abstract: Methods are disclosed for the manufacture of optical conductive transparent windows and coatings having high transparency over a wide bandwidth combined with a large acceptance angle of incidence. Particulars for making windows and coatings with gold films of high transparency and low sheet resistance using specified nucleating and barrier layers are given. Examples include windows and coatings constructed for operation in the infrared and ultraviolet.

Abstract: An alloy for use as a bearing lining on a metal backing comprising, by weight, 1 to 11% silicon, 8 to 35% tin, and 0.2 to 3% copper, the balance being aluminum. The lining is first cast as a billet annealed, cold rolled, annealed and cold rolled a second time and then bonded to the metal backing. The lining optionally carries a soft overlay.

Abstract: An enhanced substrate for magnetic data storage devices incorporating a metallic thin film magnetic recording medium attached to the substrate by wet plating processes. In one embodiment the substrate is composed of a single phase alloy. The substrate can then be processed by conventional magnetic data storage device fabrication procedures with the resultant storage device having fewer surface coating irregularities and magnetic characteristic inconsistencies than conventional magnetic data storage devices. In an alternative embodiment a layer of a single phase alloy is first deposited onto a conventional substrate. The single phase alloy may be incorporated in both rigid storage devices where a magnetic data read-write head floats above the surface of the storage device or flexible magnetic storage devices in which the read-write head is in intimate contact with the storage device.

Abstract: Aluminum silicon alloys are used as cores for highly conductive metal coated particles to be incorporated in resins for use as electromagnetic interference shielding. High temperature processing conditions are used after coating of the particles to improve internal and external corrosion resistance of gaskets and filled resins into which the particles are incorporated for shielding use.

Abstract: A thin film metal alloy medium for vertical recording has a magnetic film structure of individual films, each film being made up of a non-magnetic layer and a magnetic layer. In a preferred embodiment of the medium, each of the layers is a cobalt-chromium-tantalum (CoCrTa) alloy, the tantalum concentration being varied in the different layers in order to provide either the non-magnetic or the magnetic properties to the layers. The medium also includes a soft magnetic underlayer film structure between the substrate and the magnetic film structure to provide a magnetic flux return path. Each film in the underlayer film structure comprises a CoCrTa non-magnetic layer and a CoCrTa magnetic layer, each magnetic layer being sufficiently thin such that the underlayer film structure exhibits in-plane magnetization with no perpendicular magnetic anisotropy.

Abstract: A perpendicular magnetization amorphous thin film of an alloy of samarium, cobalt and bismuth having an easy magnetizing axis perpendicular to a plane of substrate, and the preparation thereof. According to the thin film, a large saturation magnetization is obtained along an easy magnetizing direction perpendicular to the plane of substrate. The thin film can be prepared by depositing samarium, cobalt and bismuth on the substrate without any applying a bias voltage to the substrate.

Abstract: A composite nickel plated sliding surface is obtained by the formation of a composite nickel plating film on a sliding surface of an automobile part such as an engine cylinder or piston by electroless nickel plating. The plating film contains at least one member of wear resistant particles having an average particle size of 0.1 to 1.0.mu. selected from SiC, TiC, WC, BC.sub.4, TiN, Al.sub.2 O.sub.3 or the like, and also at least one member of lubricating particles having an average particle size of 1 to 10.mu. selected from BN, MoS.sub.2, and Teflon. The nickel plating bath is adjusted to have a phosphorus concentration of 0.5 to 12%. When the matrix of the nickel plating film has a phosphorus concentration of 0.5 to 5%, the film hardness is improved.

Abstract: High performance alloy structures are improved in corrosion and erosion and wear resistance characteristics by the incorporation of an interdispersed phase and a ternary or quaternary alloy of platinum, rhodium or palladium, the alloy base metal and an alloying element such as aluminum in the structure surface with the use of relatively less of the precious metals for a given depth of case by virtue of the conjoint incorporation of the interdispersed phase.

Abstract: An improved cobalt-platinum (CoPt) thin film metal alloy media for horizontal magnetic recording has a coercivity substantially greater than prior CoPt thin film metal alloy media. A tungsten underlayer between the substrate and the CoPt magnetic layer improves the coercivity above that of media wiht conventional underlayers, such as chromium. The coercivity of the CoPt layer can be increased even further if the CoPt film is deposited in such a manner as to form an intermetallic compound of Co.sub.3 W in the interface region between the tungsten underlayer and the CoPt magnetic layer. The tungsten underlayer also improves the magnetic properties of the media when the magnetic layer is an alloy of cobalt-platinum-chromium (CoPtCr).

Abstract: An improved cobalt-platinum (CoPt) thin film metal alloy media for horizontal magnetic recording has a squareness greater than prior CoPt thin film metal alloy media. An underlayer of a body-centered-cubic (BCC) chromium-based alloy with a lattice cell constant greater than chromium (Cr), such as chromium-vanadium (CrV), is formed between the substate and the CoPt magnetic layer. The underlayer also improves the magnetic properties of the media when the magnetic layer is an alloy of cobalt-platinum-chromium (CoPtCr).

Abstract: An improved fabrication process for cobalt-enriched cemented carbide substrates is disclosed, in which an article is generally comprised of tungsten carbide, cobalt, and carbides, nitrides or carbonitrides of titanium, tantalum, and niobium, or mixtures thereof. In one aspect of the invention the article is contacted with nitrogen gas and then sintered in the absence of nitrogen gas to form a cobalt-enriched, B-1 phase-depleted zone. The article is then sintered in nitrogen gas to form a B-1 phase enriched layer on the surface of the article. Additionally, a metal oxide wear layer can be provided on the article.

Abstract: The process of forming a composite with an alloy having an alloy component of about 0.5 to 12% aluminum and a matrix selected from a material of the group consisting of copper, iron or nickel. The alloy is heated in an oxygen-rich atmosphere to form a material oxide-rich layer on a surface of the alloy. The alloy is then heated in a reducing atmosphere to reduce the material oxide-rich layer to form an aluminum oxide on the surface of the alloy and a material-rich layer on the aluminum oxide layer.

Abstract: In a magnetic recording medium particularly for perpendicular magnetization comprising a non-magnetic substrate and a magnetic thin film formed on the surface thereof and including at least two layers, a lower layer with low coercive force and high permeability, for example, of permalloy is sputtered on the substrate and an upper layer for perpendicular recording, for example, of cobalt-chromium alloy is sputtered on the lower layer, and the average grain diameter of the lower layer is less than one half of that of the upper layer.

Abstract: A process for producing magnetic plated media suitable for use in high-performance disk drives is disclosed. A layer of nickel is first provided on a standard aluminum alloy substrate, by electroless deposition, to improve adhesion of subsequent layers. A layer of nickel phosphorous and a magnetic layer of nickel cobalt are then, in turn, electroplated. The plated media disk is then oxidized below a nickel-magnetizing temperature to provide a protective outer surface.A variation of this process is also disclosed. This time a magnetically-shielding copper layer is electroplated over the first nickel layer. The nickel phosphorous and nickel cobalt layers are then electroplated on as before. The plated media can now be oxidized at a temperature higher than the nickel-magnetizing temperature to speed up the process.

Abstract: Workpieces are very rapidly pack diffusion coated by using an excess of energizers in the pack, heating the retort containing the packed workpieces at a rate that brings the workpieces to diffusion-coating temperature and then completing the diffusion coating, all in less than 50 minutes, then cooling the retort. Workpiece can have top coating layer of aluminum flake covered by a layer of extremely fine alumina or silica in a magnesium chromate binder, to provide surface having roughness at least about 10 micro-inches smoother than before the top coating. More active diffusion coated products are also produced.

Abstract: A foil material for the storage of hydrogen in materials capable of bearing hydrogen, i.e. a hydrogen storageable material. Through the intermediary of a heat-conductive bond between a metal having hydrogen storage capability and a substrate, which is adapted for the absorption and conducting off of the reaction heat produced during hydrogen exchange, and on which the hydrogen storageable metal is applied as a storage layer, there is afforded a rapid heat exchange during the loading and unloading of the storage layer. Employed for this purpose is the heat capacity of the substrate. The material for the substrate and the volume of the latter is so selected that the reaction to heat is exchangeable with the substrate of the storage layer without the need for ancillary heat exchangers; in effect, can be taken up by or given up from the substrate. The storage layer has its exposed surface covered with a protective layer which acts in a corrosion-inhibiting manner and which is permeable to hydrogen.

Abstract: A metal powder sheet for use for forming a sintered layer on a metal substrate. The sheet includes powders of a metal which provides a required physical property such as wear-resistance and ultra-fine powders of a metal having a powder size finer than 1 micron. These powders are kneaded with an addition of an acryl resin as a binder. The ultra-fine powders make it possible to carry out the sintering process at a lower temperature.

Abstract: A novel method is provided for producing metallic glass reinforced metal rix composites possessing good interfacial bonding between the metallic glass and the metal matrix without gross degradation of the metallic glass or metal matrix. A layer of metallic glass in suitable form, e.g. ribbon, wire or flake, is placed between layers, e.g. sheets, of metal matrix material, which exhibits superplastic flow at a temperature below the crystallization temperature of the metallic glass material. The resulting structure is compressed at a temperature below the crystallization temperature of the metallic glass and sufficient to produce extensive superplastic flow of the metal matrix material.

Abstract: A reliable garnet to metal hermetic seal is obtained by metallizing the garnet with successive sputtered layers of tantalum or titanium, molybdenum or tungsten and nickel, followed by soldering or brazing the metallized garnet to a metal member.

Abstract: This invention provides an electrode on a heat-resisting and isolating substrate which is low-priced and has a stable character and the manufacturing process therefor. A paste which comprises 0.05 to 40 weight % of a metal material containing silver component of 0.5 to 100 weight % the remaining weight % of an organic vehicle, is formed on the substrate, and is heated at temperatures of 250.degree. to 900.degree. C. and consequently a metallic particle layer of 0.05 to 2 microns in thickness is formed on the substrate, and then an electrode of nickel and copper of 0.1 to 20 microns in thickness is built up on it by electroless plating.

Abstract: A thin-film disc fabrication method and structure contemplates a sputtered undercoat. An aluminum base is subjected to a fine polishing step, and a relatively thin undercoat is deposited by sputtering. The preferred undercoat is a 0.3-3 micron layer of nickel-vanadium alloy (on the order of 7% vanadium). The preferred recording layer is a sputtered composite structure comprising a layer of chromium and an overlying layer of a cobalt-chromium alloy. Modulation effects can be substantially eliminated by heating the aluminum base prior to sputtering the nickel-vanadium undercoat, and by oxidizing the undercoat prior to deposition of the overlying layers.

Abstract: A magnetic material wire is composed of a core of magnetic material having a Curie point of 70.degree. to 250.degree. C. and a high conductive metal sheathing of a uniform thickness covering the core. The ratio of the metal sheathing to the wire in cross-section is in the range of 15 to 40%. There is also disclosed a method of producing such a wire.

Abstract: A composite structure of thin films including alternating layers of relatively high conductivity metals and low conductivity metals to combine the effects of reflection and absorption and thereby maximize the attenuation of the structure. Additionally, a similar structure of layers of materials with differing magnetic permeabilities may be used for the same purpose.

Abstract: A hybrid integrated circuit is prepared by laminating an aluminum-copper clad foil on an insulating layer, etching the aluminum-copper clad foil with etching agents to form an aluminum circuit and a copper circuit and connecting a semiconductor element to the aluminum circuit through an aluminum wire or a gold wire while connecting a circuit element to the copper circuit by soldering.

Abstract: The invention refers to a corrosion-proof solderable system of layers which is applied to a support and is made of a solderable layer and a corrosion-protection layer covering the solderable layer and protecting it from complete oxidation. In order to create a layer system which is simpler and cheaper to manufacture, the solderable layer contains a proportion of oxidizable metal.The corrosion-protection layer is made by oxidation of the solderable layer on its free surface.

Abstract: The process of forming a composite with an alloy having an alloy component of about 0.5 to 12% aluminum and a matrix selected from a material of the group consisting of copper, iron or nickel. The alloy is heated in an oxygen-rich atmosphere to form a material oxide-rich layer on a surface of the alloy. The alloy is then heated in a reducing atmosphere to reduce the material oxide-rich layer to form an aluminum oxide on the surface of the alloy and a material-rich layer on the aluminum oxide layer.

Abstract: Copper alloys are disclosed which may be bonded to aluminum containing members with reduced formation of undesirable copper-aluminum intermetallic compounds. The copper alloys consist essentially of about 15% to about 30% nickel and the balance essentially copper. The nickel addition in the alloys suppresses the nucleation rate and the subsequent growth rate of copper-aluminum intermetallic compounds. The copper alloys of the instant invention have particular utility in integrated circuit assemblies as lead frames, lead wires and beam lead tapes.

Abstract: An improved crystal is provided with an aluminum baseplate, a nickel plating on the aluminum baseplate, and a silver plating on the nickel plating. The nickel is plated on the aluminum baseplate before the aluminum has oxidized to provide high yields of stable crystals.

Abstract: Layered active brazing material in the form of two microcrystalline or amorphous foils applied to both sides of a ductile metal ribbon acting as a carrier. The foils consist of an alloy containing two or more of the elements Cu, Ti, Ge, Si, Ag, Zr, Ni, Al, Fe and are produced by spraying the molten alloy onto a rapidly rotating, cooled copper cylinder, and the resulting ribbon detaching itself from the cylinder. Production of the ductile metal body covered on both sides with foils using spot welding.

Abstract: Method is provided for improving performance alloy structures improved in corrosion and erosion and wear resistance characteristics by the incorporation of an interdispersed phase and a ternary or quaternhary alloy of platinum, rhodium or palladium, the alloy base metal and an alloying element such as aluminum in the structure surface with the use of relatively less of the precious metals for a given depth of case by virtue of the conjoint incorporation of the interdispersed phase.

Abstract: A copper-clad laminate having special utility in the production of high resolution printed circuit patterns is made by a method which includes as the step of forming an initial copper film by vapor depositing copper directly in contact with an as-rolled aluminum carrier sheet at temperature between about 100.degree. C. and 250.degree. C. so that the carrier release peel strength has an average value between about 0.5 and 2.0 pounds per inch.

Abstract: A multifiber electrical brush formed of an electrically conductive matrix material having plural electrically conducting fiber wires embedded therein and extending therefrom, wherein the fiber wires have a diameter varying from 1 to 120.mu.m, a length on the order of 100 times greater than the diameter thereof, and a packing density between 1-25%. Suitable materials for the fiber wires are platinum, gold, silver, copper, palladium, or niobium which may be embedded in a copper, silver, or other suitable matrix material, or copper embedded in an aluminum matrix. The fiber wires may be provided with a coating of a suitable barrier material on the lateral surfaces thereof as may be required to protect the fiber wires from etching during removal of the matrix material, or to prevent and/or retard interdiffusion between the matrix material and the fiber wire material during annealing or hot-forming of brush stock, and/or to impart improved electrical performance to the resultant electrical brush.

Abstract: A magnetic recording medium comprising a non-magnetic base which is dimensionally stable at up to 300.degree. C., and an 0.03-0.4 .mu.m thick magnetically hard recording layer of an Sm-Co alloy, vacuum-deposited thereon, which layer possesses uniaxial magnetic anisotropy in the plane of the layer, and a process for the manufacture of this recording medium.

Abstract: A metal laminate possessing high strength characteristics as well as good ductility and malleability, comprising one or more layers of a superplastic material metallurgically bonded to one or more layers of a non-super plastic material; and the method of preparing the laminate to induce plastic or super plastic characteristics to the nonsuper plastic material.

Abstract: Smooth layers of a metal are produced on a glass substrate where a large ferential expansion coefficient of the metal relative to the substrate produces very large stresses in the metal when the metallized substrate is subjected to a post deposition anneal. The method involves depositing a layer of a metal having a very small self diffusion coefficient at the anneal temperature prior to depositing the metal having the large differential expansion coefficient.

Abstract: Manufacturing method and high-stress resistant product produced thereby. The method involves electro deposition by cathodic electrolysis of a thin metallic layer of the oxide of the metal molybdenum, on the surface of a metal workpiece. The workpiece, which could be solid or else a laminate such as a slide bearing, thus has an adaptation surface capable of withstanding extremely high surface pressures and/or high temperatures, and of preventing metallic-surface abrasion or galling, and dry friction.

Abstract: Disclosed are processes and articles for composite electroless coatings comprising at least two distinct layers, the first layer comprising a metal and/or a metal alloy plus particulate matter and the second layer comprising a metal and/or a metal alloy and being substantially free of particulate matter.

Abstract: Disclosed are processes and articles for composite electroless coatings comprising at least two distinct layers, the first layer comprising a metal and/or a metal alloy plus particulate matter and the second layer comprising a metal and/or a metal alloy and being substantially free of particulate matter.

Abstract: A centrifugal casting of tubular form exhibiting an outer layer of a heavy (high density) metal having a high melting point, an inner layer of a lighter (low density) lower melting point metal and an intermediate zone where the two metals vary continuously and oppositely as to concentration from the inner layer to the outer layer; in the case of a tube these layers are the inner diameter (I.D.) and the outer diameter (O.D.).

Abstract: To prevent metal fatique, particularly when making a button loop, or nail head thermo compression bond connection to a semiconductor, the connecting wire has a core of copper, or a copper alloy of at least 60% copper content, and a jacket of aluminum, or aluminum alloy, of at least 95% aluminum content; in a preferred form, the core is 94% copper and 6% tin, and the jacket is, for example, 99% aluminum, 1% silicon; 96% aluminum, 4% copper; or 99% aluminum, 1% magnesium, all percentages by weight.

Abstract: An improved magnetic disk recording device having a smooth recording medium layer covered with a protective film layer whose surface is formed with radially extending sinusoidal jogs or undulations defining a surface roughness greater than that of the underlying recording medium. These jogs act to avoid wear due to the adhesiveness between the device and a recording or reproducing head. The jogged protective film layer is formed by using a solvent of specified boiling point in a spin-coating process.

Abstract: A metal composite comprising a substrate having a uniformly, mildly etched surface of an aluminum alloy, e.g. an alloy, consisting of at least about 99 wt. % aluminum, and the balance comprising specified quantities of silicon, iron, copper, manganese and zinc, and a uniformly adhering, electrocathodically deposited copper foil. The resulting peel strength between the aluminum alloy surface and the copper foil, after lamination of the composite to a resinous substrate under heat and pressure is within the range of from about 6 to about 8 lbs./in. of width of copper foil. This can be reduced to a value within the range of about 0.3 to about 2 lbs./in. of width by overplating the copper foil with a layer of zinc or indium. The resinous substrate may be a glass fiber reinforced epoxy resin, such as is used in the manufacture of printed circuit boards.

Abstract: A process, article produced therefrom, and compositions are described for the reception of electroless plating onto a substrate of a non-catalytic metal or non-catalytic alloy. The process comprises contacting the surface of the non-catalytic substrate with a promotor composition containing ions selected from the group of nickel, cobalt, iron, and mixtures thereof and a suitable reducing agent, and thereafter contacting the treated surface with an electroless plating bath comprising hypophosphite for metallic build-up.

Abstract: A method of plating a strip of a metal having a melting point and a mechanical resistance which are higher than those of aluminum. The metal strip which is to be plated onto the aluminum strip is interposed between the roll or rolls and the aluminum strip on at least one face of an aluminum strip by continuous casting between rolls and by use of a nozzle. The strip of plating metal contacts the roll at least over the portion between the generatrix closest to the end of the nozzle and the generatrix situated in the plane of the roll axes. The clearance between the nozzle and the plating metal strip applied to the roll is less than 1 mm and the elongation of the plating metal strip is greater than 1% and less than that of the solidified aluminum. The present method is used in the production of composite aluminum-copper or aluminum-stainless steel strips.

Abstract: A continuous film having a solar selective coating on one surface and adhesive on the opposite surface is produced by a coil type process. The film may be cut to size and shape for application to solar collectors.

Abstract: A thin film of magnetic recording material is sputter deposited over a base layer of gold and tantalum on a polished substrate. A protective layer of gold and tantalum is deposited overlaying the magnetic recording film. A solid lubricant layer such as carbon, preferably in the form of graphite, gold, silver, tin, molybdenum disulfide, and tungsten disulfide is sputter deposited or ion plated over the protective layer to reduce wear. The recording contacting portion of the recording head is similarly coated with a solid lubricant material. Other suitable protective materials include tantalum, niobium, tungsten and nitrides and carbides of such metals. In a preferred method for making such recording members, the layers are successively sputter deposited in an evacuated sputter chamber, whereby the recording layers and protective coatings are formed in a continuous process requiring only one pump down.

Abstract: A method of plating a metallic substrate by coating said substrate with a specific metallic system; plating at least one metal onto the coating; and heating the coated and plated metallic substrate to a temperature that effects a bonding of said metallic substrate to said coating and the plated metal. The method is utilized to plate metals onto metal substrates; including substrates such as aluminum and zinc.

Abstract: An abradable ceramic seal coating on at least one of a pair of members having relative rotational movement, the coating being formed of stabilized zirconia which is codeposited with a thermally decomposable organic powder, the codeposited layer being heated to decompose the organic filler and produce a porous coating of from about 20 to about 33% voids.

Abstract: Roughening effect of low-temperature diffusion aluminizing of age-hardenable stainless steels, is offset by applying a nickel or cobalt plating not over 0.1 mil thick before the aluminizing.