| Patents for C23C 8 - Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals (10,951) |
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| 05/18/1994 | CN1024568C Control method and apparatus for carbon potential of continuous drop carburization furnace |
| 05/11/1994 | EP0596121A1 Process for forming passive film on stainless steel, and stainless steel and gas- and liquid-contacting part |
| 05/11/1994 | EP0596092A1 Process and device for applying pulses on the surface of a solid body |
| 05/11/1994 | DE4337374A1 Removal of sludge from molten salt quenching bath liq. - with a sludge receptacle provided with ceramic honeycomb filters |
| 05/11/1994 | DE4227603C1 High temp. solid electrolyte fuel cell - has electrode contact layer of iron@, nickel@ or cobalt@ |
| 05/05/1994 | DE4313272C1 Objects made of platinum@ and palladium@ - comprise hard scratch-resistant surface layer contg. boron@ in the metal lattice |
| 05/05/1994 | DE4236801A1 Case-hardening of steel parts using hydrogen gas reaction - where a vacuum oven is insulated with readily available mineral fibres and is heated by radiation tubes |
| 05/04/1994 | EP0595582A1 Passivation of metal tubes |
| 05/04/1994 | CN2163815Y Double-heating multi-functional ion-bombardment furnace |
| 05/04/1994 | CN2163814Y Multi-functional ion-bombardment furnace |
| 05/03/1994 | US5308707 Treatment process for depositing a layer of carbon in vapour phase on the surface of a metal article and article thus obtained |
| 05/03/1994 | US5308412 Method of surface hardening cobalt-chromium based alloys for orthopedic implant devices |
| 04/28/1994 | WO1994009175A1 Method of continuously carburizing metal strip |
| 04/28/1994 | CA2125785A1 Method of continuously carburizing metal strip |
| 04/27/1994 | EP0593988A1 Process for hydrophilising solid surfaces |
| 04/26/1994 | US5306531 Electrodepositing a nitride protective coatings on the press plate by glow discharging the nitrogen ion and sputtering off ferrous metal ion |
| 04/26/1994 | US5306389 Method of protecting aluminum nitride circuit substrates during electroless plating using a surface oxidation treatment |
| 04/26/1994 | US5306355 System for the passivation of metal surfaces affected by operating conditions and agents promoting corrosion |
| 04/26/1994 | US5306354 Method of blackening treating a stainless steel strip surface |
| 04/20/1994 | EP0592708A1 Method and device for treating plates in a gas stream |
| 04/19/1994 | US5304397 Oxidation resistant carbon and method for making same |
| 04/19/1994 | US5303904 Method and apparatus for controlling heat transfer between a container and workpieces |
| 04/14/1994 | WO1994008065A1 Method of forming oxide passivation film having chromium oxide layer on the surface thereof, and stainless steel having excellent corrosion resistance |
| 04/14/1994 | WO1994007630A1 Wheel speed measuring gear and method of manufacturing the same |
| 04/13/1994 | EP0592309A1 Process for nitriding a titanium alloy workpiece and device for spraying nitrogen and inert gas |
| 04/12/1994 | US5302422 Deposition process of a ceramic coating on a metallic substrate |
| 04/06/1994 | CN1024144C Nitriding furnace apparatus |
| 04/05/1994 | US5299441 Method of making a mandrel comprising a drill section for a self-drilling blind rivet |
| 03/30/1994 | EP0589415A1 Steel sheet for press working that exhibits excellent stiffness and satisfactory press workability |
| 03/29/1994 | US5298091 Inhibiting coke formation by heat treating in nitrogen atmosphere |
| 03/24/1994 | DE4333917A1 Increasing the nitrogen@ content of stainless steel surfaces - to improve their wear-resistance and toughness |
| 03/23/1994 | EP0588458A1 Method of nitriding austenitic stainless steel |
| 03/23/1994 | CN1084226A Method of nitriding austenitic stainless steel products |
| 03/22/1994 | US5295668 Metal tube oxidation treatment apparatus |
| 03/17/1994 | DE4229803A1 Control of nitriding and nitro:carburising atmospheres - by oxygen probe using fully dissociated gas as reference gas |
| 03/15/1994 | US5294586 Oxidation to form aluminum oxide whiskers |
| 03/15/1994 | US5294264 Method of nitriding refractory metal articles |
| 03/15/1994 | CA2048149C Continuous annealing line having carburizing/nitriding furnace |
| 03/09/1994 | EP0585940A1 Alloy with ultrafine crystal grains excellent in corrosion resistance |
| 03/08/1994 | US5292555 Process for applying nitride layers to titanium |
| 03/08/1994 | US5292274 Method of manufacturing a color CRT to optimize the magnetic performance |
| 03/08/1994 | US5292200 Ball-and-roller bearing |
| 03/08/1994 | CA1327508C Composite, corrosion-resistant article comprising a metal substrate, a refractory metal layer on said substrate and a sulfide coating on said layer |
| 03/03/1994 | WO1994004717A1 Method and apparatus for modifying surface material |
| 03/03/1994 | DE4228748A1 Nitriding or nitro-carburising for steel parts - including holding phase at specific temp. during cooling for hydrogen removal |
| 03/02/1994 | CN1083126A Plasma ion nitrided stainless steel plates and method for manufacture and use of same |
| 03/01/1994 | US5290369 Forming iron sulfide and iron nitride layer on steel, friction resistance |
| 03/01/1994 | US5290368 Melting a titanium and nitriding with nitrogen gas to form shafts |
| 02/23/1994 | EP0583473A1 Method and device for treatment of articles in gas-discharge plasma |
| 02/23/1994 | CN1082777A Apparatus for the formation of excited or unstable gaseous molecules and uses of such an apparatus |
| 02/23/1994 | CN1082623A Process for passivating metal surfaces to enhance the stability of gaseous hydride mixtures at low concentration in contact therewith |
| 02/23/1994 | CN1082622A Process for drying metal surfaces using gaseous hydrides to inhibit moisture adsorption and for removing adsorbed moisture from the metal surfaces |
| 02/22/1994 | US5288345 Method for treating sintered alloy |
| 02/22/1994 | US5288340 Oxidation, coating with heat-hardenable resin |
| 02/15/1994 | US5286565 Carbon body with boron carbide formed by reaction with boron oxide, glass forming coating of silicon nitride and/or silicon oxynitride |
| 02/11/1994 | EP0680393A4 Method of recycling scrap metal. |
| 02/10/1994 | DE4226229A1 Surface treatment using high energy material pulse |
| 02/08/1994 | US5284527 Method of making silver-metal oxide materials and electrical contacts |
| 02/02/1994 | EP0580912A1 Process for making metal alloys for obtaining a homogenous powder of oxides of said metals and their applications for obtaining semi-conductors and super-conductors |
| 02/01/1994 | US5283414 Plasma treatment apparatus |
| 02/01/1994 | US5283030 Coated cemented carbides and processes for the production of same |
| 02/01/1994 | US5282890 Process for producing brown covering layers on copper |
| 02/01/1994 | CA1326595C Furnace |
| 01/26/1994 | EP0580081A1 A product of a Ti-Al system intermetallic compound having a superior oxidation resistance and wear resistance and a method of manufacturing the product |
| 01/26/1994 | EP0580019A1 Oriented polycrystalline thin films of transition metal chalcogenides |
| 01/26/1994 | CN1081209A Granular boronising agent and its preparing method |
| 01/25/1994 | US5281304 Modifying surface of copper film to copper sulfide, etching to patternize wiring, reducing copper sulfide to copper, forming insulation |
| 01/20/1994 | WO1994001589A1 Method and apparatus for controlling heat transfer between a container and workpieces |
| 01/19/1994 | CN2153555Y Chemical heat treatment drop control instrument |
| 01/18/1994 | US5279901 Cemented carbide body with extra tough behavior |
| 01/18/1994 | CA1326150C Case-hardened plate armor |
| 01/11/1994 | CA2014620C Ferritic stainless steel coated with a blade-like oxide, and its manufacturing process |
| 01/05/1994 | CN1080331A Rare earth catalytic diffusion salt-bath anti-corrosion nitriding method |
| 12/29/1993 | EP0576402A1 Electrodes of improved service life |
| 12/29/1993 | EP0576067A1 Hydrogen-water vapour pre-treatment of Fe-Cr-Al alloys |
| 12/28/1993 | US5273585 Heat-treating apparatus |
| 12/26/1993 | CA2097789A1 Electrodes of improved service life |
| 12/22/1993 | EP0575260A1 Apparatus for the formation of excited or instable gaseous molecules and use of said apparatus |
| 12/22/1993 | EP0575098A1 Downstream ammonia plasma passivation of GaAs |
| 12/22/1993 | CN1023238C Method of nitriding steels |
| 12/20/1993 | CA2098652A1 Device for forming unstable or energized gaseous molecules and use of said device |
| 12/15/1993 | EP0574115A2 Diffusion bonding of aluminium and aluminium alloys |
| 12/14/1993 | US5270374 Water-based shielding compositions for locally protecting metal surfaces during heat treatment thereof |
| 12/09/1993 | WO1993024267A1 Method of forming oxide passivation film at weld portion and process apparatus |
| 12/09/1993 | WO1993024259A1 Improvements in and relating to the production of high silicon-iron alloys |
| 12/08/1993 | CN1079257A Amorphous treatment process and device for ring |
| 12/07/1993 | US5268040 Method for steel surface hardening treatment and an apparatus therefor |
| 12/01/1993 | CN1079006A Boron osmotic method for gear wheel drill bit gear claw neck by paste |
| 11/30/1993 | US5266129 Process for production of oriented electrical steel sheet having excellent magnetic properties |
| 11/25/1993 | WO1993023587A1 Process and device for applying pulses on the surface of a solid body |
| 11/24/1993 | CN1078752A Nikel alloy products with their surfaces nitrided and hardened |
| 11/23/1993 | US5265137 Wear resistant nuclear fuel assembly components |
| 11/23/1993 | US5264247 Process for the manufacture of a coating bar for a bar coater |
| 11/23/1993 | US5263957 Ultrasonic scalpel blade and methods of application |
| 11/23/1993 | CA1324584C Tubing with inside oxide layer |
| 11/18/1993 | EP0569637A1 Nickel alloy products |
| 11/16/1993 | US5262040 Pretreatment by degreasing, annealing, etching to form a rough surface for enhanced adhesion for coating, used as anode |
| 11/16/1993 | US5261972 Heat treatment, hot rolling, cold rolling, nitriding |
| 11/10/1993 | EP0362320B1 Process for manufacturing integrally-blackened silver alloy |
| 11/09/1993 | US5260093 Method of making biocompatible, surface modified materials |