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8003563 |
Method for producing tungsten trioxide powder for photocatalyst, tungsten trioxide powder for photocatalyst, and photocatalyst product
A method for producing a tungsten trioxide powder for a photocatalyst according to the present invention is characterized by comprising a sublimation step for obtaining a tungsten trioxide powder...
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7998282 |
Heat treatment method of steel components, steel components and manufacture method of steel components
A method of heat-treating a steel member including carburizing a steel member in a carburizing gas under a reduced pressure. The steel member is then cooled in a cooling gas having a pressure lower...
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7972973 |
Method for forming silicon oxide film, plasma processing apparatus and storage medium
The present invention provides a method for forming a silicon oxide film, with a substantially uniform film thickness and without being so influenced by dense sites and scattered sites in a pattern...
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7892364 |
Surface modifying jig of engine valve and surface modifying method employing it
A surface modifying jig of an engine valve comprising a substantially circular ring portion for holding the valve head of an engine valve, a head holding portion having a diameter decreasing...
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7754028 |
Plasma-nitriding of maraging steel, shaver cap for an electric shaver, cutting device made out of such steel and an electric shaver
The invention relates to a method for the plasma-nitriding of precipitation-hardenable stainless steels or stainless maraging steels. The invention also relates to a shaver cap for an electric...
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7648586 |
Ultra-low carbon stainless steel
In a surface layer of an ultra-low carbon stainless steel comprising a seal function layer in the surface layer, an ion such as a nitrogen ion is implanted to form the seal function layer. Since...
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7556699 |
Method of plasma nitriding of metals via nitrogen charging
A method of nitriding a metal includes transforming a surface region of a generally nitrogen-free metal into a nitrogen-containing solid solution surface region. A first heating process heats the...
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7556700 |
Ice skate blade produced by pulse plasma nitriding
A process to manufacture ice skate blades and the ice skate blades that result from this process where the blades of made from a nitridable steel hardened to a medium hardness (Rockwell C 38-55)...
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7465362 |
Plasma-assisted nitrogen surface-treatment
Methods and systems (10) for plasma-assisted nitrogen surface-treatments are provided. The method can include subjecting a gas (24) to electromagnetic radiation (26) in the presence of a plasma...
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7291229 |
Method of surface treatment of titanium metal
A method of carburizing treatment is proposed in which if carburizing is carried out at a low temperature, carbon will not turn amorphose and deposit on the surface of a titanium metal but reliably...
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7074460 |
Method for treating the surface of a part and resulting part
A surface treatment method in which a surface of a part (7) is contacted with at least one activated species. The activated species is obtained by activating a gaseous medium containing at least...
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6787731 |
Method for oxyacetylene-cutting a piece of steel and device for carrying out this method
The invention relates to apparatus for oxygen cutting pieces of steel. The cutter and trimmer members (5, 10) are positioned in such a manner that the cutting jet (6) is applied to the top face...
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6776854 |
Process and apparatus for the partial thermochemical vacuum treatment of metallic workpieces
In the partial thermochemical vacuum treatment of metallic workpieces (1), in particular in the carburization and case hardening of workpieces (1) of case-hardening steel in a carbon-containing...
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6605160 |
Repair of coatings and surfaces using reactive metals coating processes
This invention pertains to the repair of parts comprising metals, and surfaces and coatings of these parts using reactive metals coating processes. Processes such as chemical vapor deposition...
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6602353 |
Method for nitriding-processing iron group series alloy substrate
A processing method for nitriding an iron group series alloy substrate, or processing subject, containing an alloy element for forming nitride by plasma nitriding treatment including a passivated...
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6589414 |
Nitride layer forming methods
Nitride layer formation includes a method wherein a material is electrodeposited on a substrate and converted, at least in part, to a layer comprising nitrogen and the electrodeposited material....
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6454877 |
Laser phase transformation and ion implantation in metals
A method and apparatus are provided for treating the surface of a metal body through phase transformation, ion implantation, and/or diffusion and to form new phases of metallic materials. The...
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6440230 |
Nitride layer forming method
Nitride layer formation includes a method where a material is electrodeposited on a substrate and converted, at least in part, to a layer comprising nitrogen and the electrodeposited material. The...
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6302971 |
Process for making moveable pulley half
A pulley useable with a driving belt in a continuously variable transmission, including a moveable pulley half having an integral cylinder portion integrally formed therewith by plastic working....
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6238490 |
Process for the treatment of austenitic stainless steel articles
Austenitic stainless steel articles are treated to produce a hardened surface layer thereon by plasma heat-treating the articles at a temperature in the range of 300 to 600° C. and at a pressure ...
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6235128 |
Carbon and alloy steels thermochemical treatments
The present invention is a unique sequential process for treating carbon and alloy steels to improve resistance to tribological stresses while reducing conventional processing time required to...
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6179933 |
Surface treatment of rolling element bearing steel
Rolling-element bearing components made from high quality steel are subjected to ion nitriding in a plasma as a final step in the manufacturing process to produce a layer with a hardness around...
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6139296 |
Method for treating metal surface, rotary shaft for refrigerant compressor treated by the method, vane for refrigerant compressor treated by the method, and refrigerant compressor using the same
The present invention is to provide a refrigerant compressor comprising a compressing element driven by a rotary shaft, for compressing and discharging a sucked HFC type refrigerant or refrigerant...
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5989363 |
Nitriding process and nitriding furnace therefor
A nitriding process and nitriding furnace therefor wherein the parts to be treated are maintained at floating potentional in a vacuum furnace (9), current being provided to a metal screen (5)...
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5900126 |
Method for manufacturing austenitic stainless steel substrate for magnetic-recording media
An improved magnetic-recording disk and a process for manufacturing magnetic-recording disks are disclosed. A precision cold-rolled authentic stainless steel is the substrate for a...
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5882438 |
Method for the formation of a frangible zone for the fracture separation of a machine part, in particular, a connecting rod for internal combustion engines
For a method for the formation of a frangible zone for fracture separation of a part, namely a connecting rod for internal combustion engines, by which method, in a fracture plane for the intended...
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5868878 |
Heat treatment by plasma electron heating and solid/gas jet cooling
A workpiece is heated by first forming an ionized gas plasma around the workpiece. A positive potential is applied to the workpiece to accelerate electrons from the plasma into the workpiece. The...
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5851314 |
Method for plasma carburization of metal workpieces
A method for plasma carburization of metal workpieces in a furnace includes the step of introducing a mixture of propane and methane into the furnace atmosphere. The propane and methane mixture is...
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5851313 |
Case-hardened stainless steel bearing component and process and manufacturing the same
A stainless steel bearing component containing in excess of 11% chromium and between 0.05% and 0.50% carbon is case-hardened by introducing carbon or nitrogen into the surface of the race using a...
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5846341 |
Method of carrying out diagnostics on a process for the thermo-chemical treatment of steels and alloys in a glow discharge and a device for carrying out the said method
The proposed method of carrying out diagnostics on a process for the thermo-chemical treatment of steels and alloys in a glow discharge involves monitoring the ionization characteristics of the...
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5810947 |
Method of surface modification for tool steels
The adhesive strength and hardness of chromium nitride(CrN) film deposited on SKD 61 tool steel was significantly enhanced by a nitriding process on the surface the tool steel before coating with a...
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5769965 |
Method for treating at least one part of soft magnetic material to form a hard wear area
A method for treating soft magnetic parts by annealing and producing a wear guard layer, in which the soft magnetic parts are either successively annealed and provided with a wear guard layer in a...
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5674416 |
Arc treatment of metal surfaces
A method and apparatus for graining a surface having a substantial area traveling at a substantial rate of speed. The method includes directing the surface past an array of electrical arcs...
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5662573 |
Metal inking roll for use in flexographic printing
Metal inking rolls, particularly for flexographic printing, having: A roll structure composed of an ammonia hardenable steel, in particular stainless steel, the selection of a roll wherein the...
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5658394 |
Method for increasing the surface hardness of loom components exposed to friction
Loom components such as reed dents or weft brake lamellae that, during operation, are exposed to frictional abrasion by a moving weft thread, are made of cold rolled strip steel or of refined...
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5605580 |
Carburization process
In plasma carburization of the workpiece such as gears, etc., the present invention intends to make the carbon concentration of the carburized layer to be uniform at the edge portion and at the...
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5558725 |
Process for carburizing workpieces by means of a pulsed plasma discharge
Workpieces of carburizable materials, especially steels, are carburized by means of a pulsed plasma discharge in a carbon-containing atmosphere at pressures of 0.1-30 mbars and at pulsed voltages...
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5549764 |
Wear resistant coated steel article
A coated wear resistant steel article has a basic carburized low silicon steel article of preselected properties including carbides isotropically exposed and having an elevation greater than...
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5514064 |
Process and means for making metal inking rolls
A process for making metal inking rolls, particularly for flexographic printing, having: A roll structure composed of an ammonia hardenable steel, in particular stainless steel, the selection of a...
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5496772 |
Method of manufacturing film carrier type substrate
A film carrier type substrate includes a film made of organic high molecular substance, a metal layer formed over the film by depositing metal vapor and irradiating nitrogen gas ions on the film...
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5481084 |
Method for treating a surface such as a metal surface and producing products embodying such including lithoplate
Substantial surface areas can be treated by continuously magnetically moving an electric arc around a general loop direction such as a circle, ellipse or oval and moving the surface so that the arc...
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5466305 |
Method of treating the surface of titanium
The surface of titanium is treated to reduce the friction coefficient and wear loss without sacrificing its corrosion resistance. Pure titanium or titanium alloy is subjected to plasma-carburizing...
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5443663 |
Plasma nitrided titanium and titanium alloy products
The present invention relates to ion nitriding of pure titanium or titanium-containing alloys at low pressure by intensifying the glow discharge. Plasma intensification was produced by thermionic...
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5421914 |
Surface modification of high temperature iron alloys
A method and article of manufacture of a coated iron based alloy. The method includes providing an iron based alloy substrate, depositing a silicon containing layer on the alloy surface while...
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5383980 |
Process for hardening workpieces in a pulsed plasma discharge
Workpieces of steel are hardened by carburizing the surface and then quenching. The carburizing is performed by means of a plasma discharge in a vacuum, in the presence of gaseous hydrocarbons at...
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5334264 |
Titanium plasma nitriding intensified by thermionic emission source
The present invention relates to ion nitriding of pure titanium or titanium-containing alloys at low pressure by intensifying the glow discharge.Plasma intensification was produced by thermionic...
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5240514 |
Method of ion nitriding steel workpieces
In subjecting a steel workpiece to nitriding by glow discharge, formation of brittle nitrogen compound is restrained and the surface hardened layer with a nitrogen diffusion layer of high toughness...
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5232522 |
Rapid omnidirectional compaction process for producing metal nitride, carbide, or carbonitride coating on ceramic substrate
A process is disclosed for forming a coating on a substrate. A metal layer is placed onto the substrate either by plasma spray deposition or by applying a metal foil and then subjecting it to rapid...
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5226975 |
Plasma nitride chromium plated coating method
A method of forming a wear-resistant coating for internal combustion engine component parts which allows the part to remain dimensionally stable under severe engine operating conditions is...
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5192618 |
Corrosion protection by FeMn by ion implantation
The present invention relates to the improvement of corrosion wear resistance of iron-manganese (FeMn) film by ion implantation and subsequent annealing without substantially affecting the magnetic...
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