Abstract: The article in accordance with the invention is a corrosion and erosion resistant article having good release characteristics which includes a metal body having a first surface thereon and a base coat adhering to the first surface. The base coat comprises at least one layer of inorganic particulate material bonded to the first surface. A second coat adheres to the base coat. The second coat comprising a cured coating of solid particulate lubricant in a phosphate/chromate metal ion solution. The invention also includes a corrosion and erosion resistant coating having good release characteristics which includes a base coat, the base coat comprising at least one layer of inorganic particulate material bonded to the first surface; and a second coat adhering to the base coat. The second coat comprises a cured coating of solid particulate lubricant in a phosphate/chromate metal ion solution.

Abstract: A method for coating a surface of a substrate, includes providing a substrate having a surface, and coating the surface with a foam suspension containing a powder suspended in a foam to form a coating on the surface. The substrate is then heat treated to densify the coating along the surface.

Abstract: There provided a powder supply means for supplying a powdery mold releasing agent to a basin and a pressure reduction means for reducing a pressure in a cavity, and in a casting work the powdery mold releasing agent is supplied through a basin into a cavity while reducing a pressure in the cavity.

Abstract: A method for impregnating a porous surface with a magneto-rheological substance includes the steps of providing a porous surface with a porosity sufficient to receive the magneto-rheological substance within the pores and covering a portion of one side of the porous surface with the magneto-rheological substance. The method further includes the step of providing a magnet on the opposite side of the porous surface to apply a magnetic field and draw the magneto-rheological substance into the porous surface.

Abstract: Porous composite membranes are prepared by depositing spherical polymeric particles on the surface of a porous flat sheet or hollow fiber substrate and subsequently stabilizing the composite by physical or chemical means.

Abstract: Composite particles made of a resin and filler material are provided for use in subterranean formations. The filler is finely divided mineral and optional fiber. The particles are proppants useful to prop open subterranean formation fractures. The particles are also useful for water filtration. Methods of making the composite particles are also disclosed.

Abstract: The present invention provides a laser markable coating composition comprising a colorant and a polymeric material whose opacity changes substantially irreversibly when exposed to heat. The composition may further include a carrier, an adhesion promoter, an energy transfer agent, an opaque polymeric material, and one or more binder resins. The present invention further provides a heat responsive colorant particle comprising a colorant and a polymeric material whose opacity changes substantially irreversibly when exposed to heat. A laser beam can be used to provide the heat. An example of a suitable polymeric material that irreversibly changes in opacity is a styrene/acrylic microsphere. An example of a suitable colorant is carbon black pigment. An example of an energy transfer agent is fumed silica. An example of an adhesion promoter is an oxidized polyethylene. An example of a suitable carrier is water.

Abstract: A hollow work having a hole communicating with the outside and a fine metal powder producing material are placed into a treating vessel, where the fine metal powder producing material is brought into flowing contact with the surface of the work, thereby adhering a fine metal powder produced from the fine metal powder producing material to the surface of the work. The hollow work may be a ring-shaped bonded magnet. Thus, a film having an excellent corrosion resistance can be formed without use of a third component such as a resin and a coupling agent by providing an electric conductivity to the entire surface of the magnet, i.e., not only to the outer surface (including end faces) but also to the inner surface of the magnet and subjecting the magnet to an electroplating treatment.

Abstract: A method for applying coatings to a portion of the internal bore or threads of a fastener or similar article having an opening on at least one end is provided. A 360° coating with material is provided using centrifugal force to assist in direction the material to a desired surface, which does not require use of a pressurized air stream in order to propel the coating material toward the walls of the article desired to be coated.

Abstract: A method for coating a surface of a substrate includes providing a substrate having a surface, coating the surface with a foam suspension containing a powder suspended in a foam to form a coating on the surface, wherein the coating has an activator; and subjecting the substrate to a diffusion treatment.

Abstract: An article is formed of a gas turbine component having a substrate, an internal passage through the substrate defining an internal surface of the substrate, and an internal protective layer overlying the internal surface of the substrate. The internal protective layer has a composition of aluminum, plus, in weight percent, on average from about 0.1 to about 5.0 percent of a modifying element selected from the group consisting of hafnium, yttrium, zirconium, chromium, and silicon, and combinations thereof, and elements found in the substrate.

Abstract: A method for making a self locking internally threaded fastener and an apparatus for making such fasteners, in which the self locking characteristic is derived from a patch of thermoplastic material having a circumferential extent of less than 360° adhered selectively to at least a portion of the thread defining surface of the fastener.

Abstract: A method for eliminating hoot noise in a bearing assembly (12) of an idler or tensioner pulley (10) includes applying a three component dry lubricating compound onto steel contact surfaces of the inner and outer raceways (14, 16) on which the ball bearings (20) ride, curing the compound to bond it to the contact surfaces, and pressure rolling the lubricating compound onto the surfaces. Pressure rolling fills voids (22) in the contact surfaces with particles of the lubricating compound and smoothes the surfaces thereby reducing friction. The dry lubricating compound has a very strong affinity for oil to attract and hold oil to provide an oil film which prevents metal to metal contact thereby eliminating hoot noise.

Abstract: The invention relates to a stabilized bimetal catalyst comprising an electrically conductive support and a metallic deposited coating consisting of a first metal M1 chosen from platinum and silver and a second metal M2, different from the first and chosen from the group consisting of platinum, silver, gold, ruthenium, iridium, rhodium and osmium. The invention also relates to a process for obtaining such a catalyst.

Abstract: Red decorations on substrates which can undergo decorative baking, such as glass, porcelain, ceramic and metal, can be produced using nanoporous aluminium oxide membranes according to the invention, the nanopores of which contain ligand-stabilized gold clusters. The membrane is applied to the substrate followed by baking, resulting in formation of the red color. Alternatively, the membrane can be converted into a red membrane by thermolysis, after which the membrane is employed for production of the decoration. The membranes according to the invention can be obtained by bringing a nanoporous Al2O3 membrane into contact with a solution of a ligand-stabilized gold cluster, in particular one of the formula Au55L12X6, wherein L is a phosphane ligand and X is an anion.

Abstract: The invention discloses a method and a device for applying a parting agent onto an injection mould, by means of which a powdery parting agent can be applied in a gush-free manner by means of pressurized air. For this purpose, the feed air and the dosing air for the powdery parting agent are turned on, increased, reduced and turned off in a controlled manner by means of predetermined turn-on and turn-off profiles.

Abstract: The present invention is a means and method for powder dusting various manufactured products such as extrusions, sheet materials, thin films, and piece parts. The powder dusting system includes a regenerative compressor which propels an air/dust mixture through a control valve body into a cone shaped filter where a majority of the air is filtered out. The remaining concentrated air/dust mixture enters a head component where head jets direct the air/dust mixture to the item that is being coated. The powder duster of the present invention also provides a method of coating manufactured products on both their interior and exterior surfaces.

Abstract: A coating apparatus with a spray head is provided for coating can bodies internally. The spray head is supplied with coating material through a feed line which passes through the seam welding machine for the container bodies. The combined spray and extraction head is also connected to a suction line which extracts excess coating material which has not been deposited on the internal walls of the container bodies, and returns it through the welding machine. In this way, the escape of coating material between the individual can bodies can largely be avoided, thus reducing contamination of equipment.

Abstract: A method and apparatus for forming a thin film of ultra-fine particles on a base body having a fine hole or groove with a large aspect ratio (larger than one). The ultra-fine particles are smaller than 0.1 .mu.m in diameter and are made from evaporated material. An aerosol is formed by dispersing and floating the ultra-fine particles in a gas at a pressure higher than 10.sup.2 Pa in an aerosol-forming chamber. The base body is held by a holding mechanism within a thin-film forming container. A vacuum system is connected to the thin-film forming container. The aerosol-forming chamber is placed in communication with the thin-film forming container so that the aerosol is applied onto the inner wall surface of the fine hole or the groove. As a result, the ultra-fine particles are diffused and adsorbed onto the inner wall surface.

Abstract: A collapsible metal tube, comprising: a metal body portion susceptible of plastic deformation, the body portion being sealed at one end; a shoulder portion and a mouth/neck portion connected to the other end of the body portion; and a resin film provided on the inside wall surface of the body portion, the resin film comprising a metal-adhesive thermoplastic resin layer formed by spray-coating the inside wall surface of the body portion with a dispersion of fine spherical particles consisting of a metal-adhesive thermoplastic resin and then heating to integrate the particles. The resin film formed on the inside of the collapsible metal tube is reliable because it is a dense resin film virtually devoid of pinholes, excellent in elongation at break, and free from cracking when folded or deformed, and is excellent in ability of protecting the metal body portion and the contents.

Abstract: A self locking internally threaded fastener and an apparatus and process for making such fasteners, in which the self locking characteristic is derived from a patch of thermoplastic material having a circumferential extent of less than 360.degree. adhered selectively to at least a portion of the thread defining surface of the fastener.

Abstract: A mechanism and process for coating tapped holes in specialty articles having varying external configurations, such as metal stampings. The specialty article is positioned in a preselected orientation at a loading station, and is then engaged by a carriage assembly and moved from the loading station to a heating station, and then to a spray and discharge station. During movement between stations, the article is maintained in the preselected orientation to allow proper heating and spraying of the tapped holes.

Abstract: A process and a device for producing sausage casings which bear a coating of spice particles on the inside are distinguished in that the inside of the sausage casing is provided with an adhesive coating which hardens from the liquid state and the spice particles are projected against the adhesive coating while it remains adhesive. The production of the spice particle coating can be interrupted in sections, that is to say in the sections predetermined for tying off individual sausage casings.

Abstract: A device for coating the internal surfaces of elongate hollow spaces includes a shield substantially corresponding to the cross section of the hollow space and capable of being displaced in the longitudinal direction of the hollow space by means of a bogie connected therewith. The shield is connected with supply ducts for a curable mass being in the plastic state. The supply ducts are provided with outlet openings substantially uniformly distributed about the periphery of the cross section of the hollow space. A blower is provided with a seat for a flexible tube capable of being pressed at the hollow space to be coated and substantially air-tight relative to the inner side and includes a supporting element capable of being stationarily anchored within the hollow space. The shield is provided with a central opening intended for the passage of the flexible tube containing a fiber material in addition to the impermeable layer.

Abstract: Patterned conducting polymer surfaces exhibiting excellent properties may be prepared by:(a) forming a surface of a conducting polymer on a surface of a substrate;(b) forming a surface of a blocking material on said surface of said conducting polymer in a pattern-wise fashion, to obtain a first patterned surface containing regions of exposed conducting polymer and regions of blocking material;(c) treating said first patterned surface with an agent which: (i) removes said conducting polymer from said regions of exposed conducting polymer; (ii) decreases the conductivity of said conducting polymer in said regions of exposed conducting polymer; or (iii) increases the conductivity of said conducting polymer in said regions of exposed conducting polymer; and(d) removing said blocking material to obtain a second patterned surface containing an exposed pattern of conducting polymer.

Abstract: A process of renovating pipes wherein a particulate abrasive agent is passed through the pipe to loosen the internal deposits. The process involves initially drying the pipe by drawing preheated air through the pipe, then drawing the abrasive agents through the pipe, and then coating the inner wall of the pipe with a metered quantity of a viscous hardening coating material. All of these steps may include the application of a suction to one end of the pipe, so that the pipe is always exposed only to a low pressure.

Abstract: For the application of a coating material to an object, the coating material is conveyed along a conduit by means of an entraining gas. For good conveying conditions, the entraining gas is made to travel at high velocity. In order that the velocity of the coating material discharged at the coating zone is not excessive, a partial vacuum source extracts part of the entraining gas from a point upstream of the outlet, via a separate conduit. This results both in an improved rate of deposition of the coating material on the object to be coated and in a particularly uniform coating.

Abstract: An open-pore polyurethane foam support body (20) is impregnated in a single step with a solution of a thermoplastic adhesive dissolved in a solvent that is also a foam expander, or in two sequential steps first with a foam expanding solution and then, after the foam has expanded, with a solution of a thermoplastic adhesive, to form an adhesive layer (40) on the surfaces (25) within the pores (22) and passages (24) of the foam body (20). Sorbent particles (30) of activated carbon are introduced into the expanded pores until the expanded foam is packed to the desired density of carbon particle loading. The impregnated and loaded foam is then air dried at room temperature to evaporate the foam expanding solution until the foam body contracts to substantially its original volume.

Abstract: Apparatus for powder spray coating comprises means (4) for electrostatically-charging powder entrained in air, a conduit (6) for transporting the electrostatically charged powder from the charging means (4) to an internal chamber (12) in a spray head (8), the spray head (8) having at least one passage (16) from the internal chamber (12) to at least one nozzle (17) from which the powder is discharged, and a deflector (18) mounted externally of the spray head (8) and adjacent to the or each nozzle (17) to deflect the discharged powder into a flat spray pattern, the spray head (8) and the flat spray pattern being substantially symmetrical about a common longitudinal axis. The apparatus is particularly suitable for coating a large surface area, or a plurality of small objects hung in a planar array. Preferably multiple triboelectric type charging means (4) are used and a single pump is used to supply powder to the multiple charging means through a common distributor.

Abstract: A powder spray apparatus for coating threaded fasteners capable of operating at an optimum spray condition. Air supply and powder supply tubes communicate within an air/powder entrainment block. The jet diameter of the air supply tube is sized to provide an optimum spray condition at which a constant supply of powder is provided through a powder spray tube at an optimum powder density and velocity. These powder density and velocity conditions maximize the powder build rate on the threads of the fastener, and also increase production rates. The resulting coated fasteners exhibit a low torque scatter, and a highly uniform patch. A method for operating a powder spray apparatus at the optimum spray condition also forms part of the present invention.

Abstract: An inside surface of a drinking vessel is treated with a material suitable for providing nucleation sites to encourage the formation of bubbles in a liquid containing a gas such as carbon dioxide or CO.sub.2 /nitrogen mixture. The material may be printed upon the internal surface.

Abstract: There is provided coated substrate where a filled flowable polyester composition is cured in contact with and bonded to the substrate. The composition contains 20 to 40% resin and in excess of 50% filler, the balance being welling agent, air release agent and catalyst.

Abstract: A rotating gate feeder (1) for feeding substantially particulate material comprises a housing (2) and a rotor (3) and also an end cap (8) at each end of the housing. The invention is characterized in that a wear-resistant coating (6) is cast directly on to the inner wall (14) of the housing which faces towards the rotor (3). The inner wall (14) of the housing functions as an outer mold and a purpose-adapted core (15) is used as an inner mold. The housing (2) may be provided at certain points with release zones on the inner walls (14) which face towards the cast wear-resistant coating (6). One or more wear members (12) having greater wear resistance than the molding compound may be embedded therein.

Abstract: Particles coated with biological substances are deposited onto the concave inner surface of a length of tubing by a process which includes preparing a uniform suspension of coated particles and introducing the particles into the tubing while rotating horizontally. Then the speed of rotation is increased to drive the particles out of suspension and against the inner surface. After particle separation, the rotational speed is decreased and a gas is passed through the tubing to blow out the separated liquid. Next both the speed of rotation and the gas flow rate are increased to dry the particles that have been deposited against the inner surface of the tubing. An apparatus for performing the method also is disclosed.

Abstract: A self-locking fastener having a highly localized, substantially splatter-free patch, and an apparatus and method for making such a fastener. The invention finds particular application with very small, internally threaded fasteners, but can be used with a wide variety of other fasteners, as well.

Abstract: A surface of a porous ceramic body is protected by binding ceramic particles entirely within the subsurface porosity of the body adjacent to the surface but not present as a separately identifiable surface layer. To produce such a protective layer, a slurry of a mixture of a ceramic powder and a silica-containing binding agent is first prepared. The slurry is impregnated into the surface of the body so that all of the slurry enters the porosity of the body and substantially none of the slurry resides on the surface. The slurry is dried in place, and the residual solids are fired to bind the ceramic powder to the interior walls of the porosity. Drying and firing can be accomplished at intermediate temperatures of about 700.degree.-1000.degree. F. using heat lamps, so that the surface protection can be accomplished without removing the ceramic body from a larger structure.

Abstract: A method of capturing and removing contaminant particles moving within an evacuated interior region of an ion beam implanter is disclosed. The steps of the method include: providing a particle collector having a surface to which contaminant particles readily adhere; securing the particle collector to the implanter such that particle adhering surface is in fluid communication to the contaminant particles moving within the interior region; and removing the particle collector from the implanter after a predetermined period of time.

Abstract: An apparatus and method for applying a resin coating to a plurality of discrete portions of a fastener, such as both internal and external threads. A conveyor supports a fastener. The fastener is first transported past a heater and then past a first powdered resin spray assembly. Powdered resin, supplied to the first spray assembly by a resin reservoir, is used to generate a first air-borne powdered resin stream which coats one set of threads with resin when the fastener traverses the resin stream. The conveyor also transports a second resin spray assembly through the first air-borne powdered resin stream. The second spray assembly uses a resin receiver to aspirate the air-borne resin. The resin is then used to generate a second powdered resin stream which coats the other set of fastener threads.

Abstract: An apparatus for spraying powder coating material includes a rotatable turret which moves articles to and from a work station. A powder spray gun is operable to spray a pattern onto each of the articles in turn while the article is at the work station. The powder flows through the spray gun as a series of pulses. A diverter assembly is operable to divert a portion of each pulse of powder away from the nozzle to more sharply define the pulse. An excess powder collector draws a flow of powder away from the work station. A virgin powder container supplies powder to a powder collector container which supplies powder to a powder feed container which supplies powder to the spray gun. Sensors associated with the virgin, collector and feed containers ensure that a predetermined quantity of powder is maintained in each container. During transport of powder from the virgin and collector containers, the containers and their associated pumps are vibrated to facilitate the flow of powder.

Abstract: A self locking internally threaded fastener and an apparatus and process for making such fasteners, in which the self locking characteristic is derived from a patch of thermoplastic material having a circumferential extent of less than 360.degree. adhered selectively to at least a portion of the thread defining surface of the fastener.

Abstract: Cast iron pipe and other elongated hollow articles are lined with a cementitious mortar for certain applications, such as the transmission of potable water or sewage. To improve the resistance to attack from acids and to provide a crack and void spot free cement lining, a calcium alumina cement is used to line the article. A plasticizer such as fireclay is added to the calcium alumina cement prior to its application. The cement lined article is then coated with an asphaltic based coating and then cured in a high humidity environment.

Abstract: A concrete pipe liner is formed from a difficult-to-compact hydraulic cement slurry applied to a pipe interior. The slurry contains inorganic non-compactible hydraulic cement particles, a concrete superplasticizer component, water, and optionally and preferably filler particles. The pipe is then spun to centrifugally cast a stronger, denser pipe liner than a comparable liner containing no superplasticizer.

Abstract: Photon generating devices produce predetermined radiation spectral output and heat for a variety of applications including lighting and electric power generation, and provide photons to enhance chemical and physical reactions. Such a device comprises an emitter which contains metal oxides, means to heat the emitter sufficiently to produce large number of photons of a desired spectral output, and an optical means for directing the photons to various targets. In one embodiment, the device includes a thermal input device, a light pipe having a low emissivity, and an emitter coating of superemitter material which is thermally stimulated to emit radiation of a specific wavelength above a threshold temperature. An intermediate layer may be used to bond the emitter coating to the light pipe or other optical device where desired.

Abstract: The present invention relates to a novel process for forming metal matrix composite bodies. Particularly, an infiltration enhancer and/or an infiltration enhancer precursor and/or an infiltrating atmosphere are in communication with a rigidized filler material or a rigidized preform, at least at some point during the process, which permits molten matrix metal to spontaneously infiltrate the rigidized filler material or rigidized preform. Such spontaneous infiltration occurs without the requirement for the application of any pressure or vacuum. In one embodiment of the invention, a filler material or preform can be rigidized by firing and at least partially sintering the filler material so as to provide a three-dimensionally interconnected network of sintered filler material. In another embodiment of the invention, a refractory material mixture is contacted against an exterior surface of a preform or filler material and at least at some point during the process becomes structurally supportive.

Abstract: A method for producing ceramics reinforced with three-dimensional fibers, which entails: a) setting a filter plate in contact with one surface of a three-dimensional fiber preform and a porous metallic plate in contact with said filter plate; b) setting a slurry in contact with a surface of the preform opposite to the one surface; c) exerting pressure on the slurry and, at the same time, subjecting the preform to vacuum aspiration through the filter plate, thereby obtaining a composite having an impregnated preform, the impregnation being effected in a single step; d) heating the composite; and e) firing the resultant composite.

Abstract: New and improved structures in tools subject to wear and attrition when engaging or engaged by work or material being worked on thereby. Synthetic diamond material is formed in situ on a select portion or portions of the surface of a hard substrate or tool support to define or cover the portion of the tool substrate adjacent the work operated on by the tool in a manner to provide a hard wear resistant work engaging surface or surfaces which offers substantially greater resistance to abrasion and frictional deterioration than the material of the substrate or tool base. In one form, the synthetic diamond material is formed on and welded to the surface of the substrate in a single operation involving the application of intense radiant energy beamed against particles of carbon which are converted to a solid synthetic diamond structure of defined shape directly against the solid substrate.

Abstract: A method of coating a substrate, including the steps of: providing a space between an anode substrate constituting an anode and a cathode substrate constituting a cathode using an insulating member inserted between the anode substrate and the cathode substrate, supplying the providing space with particles of a coating material, preferably a metal or a metallic compound, evacuating the space, and generating an electric field in the evacuated space to cause vibration of the particles to coat the anode substrate and the cathode substrate with the particles of the coating material. According to the substrate coating method of the present invention, a coating with a high purity having excellent adhesion to a substrate and a uniform thickness can be formed on a substrate at normal temperatures at a high efficiency. Furthermore, according to the substrate coating method of the present invention, a coating can be formed on a substrate at a low electric power.

Abstract: A method of forming fiber reinforced aluminum phosphate bonded material having improved strength at elevated temperatures. The method comprises the steps of: (a) preparing a slurry by blending alumina and aluminum phosphate solution, the slurry being substantially free of silica; (b) providing a fiber substrate coated with a metal selected from the group consisting of nickel, tungsten, molybdenum, platinum, copper, silver, gold, palladium, cobalt, chromium and titanium; (c) infiltrating the slurry into the fiber substrate; and (d) curing the infiltrated substrate to form a fiber reinforced aluminum phosphate bonded composite material. In a preferred embodiment of the present invention, the fiber substrate is made from SiC fibers and the refractory metal is electrolessly coated nickel.

Abstract: An apparatus for coating an internally threaded fastener includes a support having a support aperture in axial alignment with an aperture in the fastener, a nozzle for applying a coating onto the internal threads located on the fastener aperture, means for reciprocally moving the nozzle through said support aperture and into said fastener aperture to align with the fastener threads, and means for maintaining the spray head in a stationary position within the fastener aperture while said reciprocally moving means continues through its reciprocal cycle.

Abstract: The present invention relates to a ceramic alloy composite composition having the alloy spontaneously infiltrated into the ceramic, with the preferred ceramic alloy composite composition being a Si.sub.3 N.sub.4 /TiN/Cu-Ti composite composition and a method for forming the ceramic alloy composite composition.