| 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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| 11/09/1993 | US5259965 Or space; cleaning titanium /alloy/ substrate, heating at 700 degrees C. for ten hours to form titanium oxide coating, applying solid lubricating film to coating |
| 11/09/1993 | US5259935 Stainless steel surface passivation treatment |
| 11/09/1993 | US5259893 In-situ generation of heat treating atmospheres using a mixture of non-cryogenically produced nitrogen and a hydrocarbon gas |
| 11/02/1993 | CA1323733C Stop off |
| 10/27/1993 | EP0567252A1 Whisker-anchored thermal barrier coating |
| 10/27/1993 | CN1022577C Method of preparing nitrogen-based controllable atmosphere used for metal thermal treatment |
| 10/26/1993 | US5255445 Process for drying metal surfaces using gaseous hydrides to inhibit moisture adsorption and for removing adsorbed moisture from the metal surfaces |
| 10/21/1993 | DE4212486A1 Steel components pretreatment - utilised prior to enamelling in annealing or baking furnaces under normal atmos. |
| 10/20/1993 | EP0565724A1 Apparatus for forming thin film |
| 10/19/1993 | US5254363 Method for producing oxide films |
| 10/19/1993 | US5254183 Gas turbine elements with coke resistant surfaces |
| 10/19/1993 | US5254181 Method of nitriding steel utilizing fluoriding |
| 10/18/1993 | CA2091472A1 Whisker-anchored thermal barrier coating |
| 10/14/1993 | DE4303763A1 Hardening the surface of high carbon steel spinning rings - by heat-surface treating e.g. by case, hardening and carbonitriding together with quenching in oil |
| 10/13/1993 | EP0565029A1 Grain oriented silicon steel sheet having low core loss and method of manufacturing same |
| 10/13/1993 | CN1077231A Cyanogen-free rapid liquid carburizer and carburizing process thereof |
| 10/12/1993 | US5252361 Oxidizing, heating the ceramics with oxygen in presence of a boron or boron compound |
| 10/12/1993 | US5252146 Heating the polytriazines in vacuum to form inorganic coating |
| 10/12/1993 | US5252145 Method of nitriding nickel alloy |
| 10/07/1993 | DE4211395A1 Regulation of nitro-carburising or carbonitriding furnace gas compsn. - by on-line optical analysis of elements and hydrogen cyanide formed and using signal to control gas supply |
| 10/06/1993 | CN1076970A Boronising of metal for imitation |
| 09/21/1993 | US5246493 Corrosion and weather resistant |
| 09/15/1993 | EP0560745A2 Cemented carbide roll for rolling metal strips and wire flattening |
| 09/15/1993 | EP0560641A1 Phosphating method of steel pieces in order to improve their corrosion and wear resistance |
| 09/15/1993 | EP0525086A4 A method of nitriding refractory metal articles |
| 09/14/1993 | US5244375 Plasma ion nitrided stainless steel press plates and applications for same |
| 09/08/1993 | CN1022053C Optimum diffusion condition dynamic controllable nitridation technique |
| 09/07/1993 | US5242741 Ferrrous material having a borided surfaces and lower porosity than interior; no embrittlement, improved properties |
| 09/07/1993 | US5241748 Method for manufacturing a compression ring |
| 09/02/1993 | WO1993017146A1 Process for the thermochemical-heat treatment of case-hardened steels |
| 09/02/1993 | WO1993017133A1 Method and installation for treating metal articles with induction magnetic field in gaseous medium |
| 08/31/1993 | US5240514 Method of ion nitriding steel workpieces |
| 08/31/1993 | US5240356 Nitrided cutter machining |
| 08/26/1993 | DE4205647A1 Verfahren zur thermochemisch-thermischen behandlung von einsatzstaehlen A method for thermo-chemical-thermal treatment of einsatzstaehlen |
| 08/26/1993 | DE4204982A1 Thermochemical-thermal treatment of case hardening steels - with deep cooling between hardening and tempering |
| 08/24/1993 | US5238498 Open tube-type impurity-diffusion apparatus for simultaneously diffusing impurities into a plurality of wafers subjected to a common environment, for producing a mass of semiconductor chips |
| 08/18/1993 | CN1021835C Process of surface compounding of steel neckband of fine spinning machine |
| 08/05/1993 | WO1993015240A1 High-hardness conductive material and method for manufacturing same |
| 08/04/1993 | CN1074841A Process for manufacturing compacted articles of aluminium powder |
| 08/03/1993 | US5232522 Rapid omnidirectional compaction process for producing metal nitride, carbide, or carbonitride coating on ceramic substrate |
| 07/28/1993 | EP0552460A1 Process for hardening of work pieces unter the action of plasma-pulses |
| 07/27/1993 | US5231645 Method of controlling continuous carburization furnace |
| 07/22/1993 | WO1993014238A1 Silver-metal oxide materials for electrical contacts |
| 07/22/1993 | CA2127685A1 Silver-metal oxide materials for electrical contacts |
| 07/21/1993 | EP0551702A1 Method of nitriding nickel alloy |
| 07/21/1993 | CN1074516A A crank shaft and method of manufacturing the same |
| 07/21/1993 | CN1074490A Rare-earth cocementing agent and process thereof |
| 07/21/1993 | CN1074489A Method of nitriding nickel alloy |
| 07/21/1993 | CN1021658C Quick thermal treatment process of tooth palm of drill toothed wheel |
| 07/20/1993 | US5228929 Iron alloys, metals or powders |
| 07/14/1993 | CN2138199Y Oil dropping pump for carbonization of heating treatment |
| 07/14/1993 | CN1074246A Motor rotary shaft and manufacturing method thereof |
| 07/13/1993 | US5226984 Corrosion resistant alumina scale by oxidation |
| 07/13/1993 | US5226975 Plasma nitride chromium plated coating method |
| 07/13/1993 | US5226968 Apparatus and method for oxidation treatment of metal |
| 07/13/1993 | CA1320109C Oxide-coated carriers and preparation and use thereof |
| 07/13/1993 | CA1320108C Process for preparation of grain-oriented electrical steel sheet having excellent magnetic and film characteristics |
| 07/06/1993 | US5225651 Device for low-temperature plasma surface treatment of a plate or a sheet of a metallic material |
| 07/06/1993 | US5225144 Gas-carburizing process and apparatus |
| 07/06/1993 | US5225057 Process for depositing optical films on both planar and non-planar substrates |
| 07/06/1993 | US5224998 Apparatus for oxidation treatment of metal |
| 06/30/1993 | EP0548760A1 Plasma ion nitrided stainless steel plates and method for the manufacture and use of same |
| 06/30/1993 | CN1073723A In-situ generation of heat treating atmospheres using a miture of non-cryogenically produced nitrogen and a hydrocarbon gas |
| 06/30/1993 | CN1021483C Rotary hearth multi-chamber, multipurpose furnace system |
| 06/23/1993 | CN1073490A Gas nitridation technology without generation of nitride layer (bright layer) |
| 06/23/1993 | CN1073485A Heat treatment technology for bimetal saw blade |
| 06/22/1993 | US5221663 Method for repairing an oxide superconducting connecting line |
| 06/16/1993 | CN1073218A Controllable atmosphere treatment with high temperature anti-wearing centre |
| 06/09/1993 | EP0545384A1 Bearing components and process for producing same |
| 06/09/1993 | EP0545069A1 Method of treating steel and refractory metals |
| 06/09/1993 | EP0544987A1 Method of treating steel alloys and refractory metals |
| 06/09/1993 | DE4139956A1 Borating metal surface, giving wear-resistant feathered lamella coating - by applying paste contg. borating cpd., heating to cause remelting of outer layer, and cooling |
| 06/09/1993 | CN1072966A New process of abnormal compound carbonitriding |
| 06/03/1993 | DE4239392A1 Surface hardness increase of titanium material components - by deoxidising thermal treatment, and application of nitrogen diffusion coating |
| 06/03/1993 | DE4139679A1 Prodn. of protective coating on aluminium@ components - for construction industry, by natural oxidn. in strongly oxidising media, followed by anodic oxidn., obviating oil, grease application |
| 06/02/1993 | CN1072733A Ionic nitridation technology with rare earth catalytic permeating |
| 05/27/1993 | WO1993010274A1 Method of forming passive oxide film based on chromium oxide and stainless steel |
| 05/25/1993 | US5213638 Composites of copper alloy cores and alloy surface layers |
| 05/25/1993 | US5213629 Ear-infrared emitter of high emissivity and corrosion resistance and method for the preparation thereof |
| 05/19/1993 | CN1020762C Infultrant for solid rare-earth chemico-thermal treatment |
| 05/18/1993 | US5211768 Method of nitriding work pieces of steel under pressure |
| 05/12/1993 | EP0541006A2 In-situ generation of heat treating atmospheres using a mixture of non-cryogenically produced nitrogen and a hydrocarbon gas |
| 05/11/1993 | US5209787 Forming a nitride precipitate, improved wear resistance and hardness |
| 05/06/1993 | CA2081875A1 In-situ generation of heat treating atmospheres using a mixture of non-cryogenically produced nitrogen and a hydrocarbon gas |
| 05/05/1993 | EP0540084A1 Method for passivating the inner surface of a reactor subject to coking, by deposition of a ceramic coating, and method of pyrolyzing hydrocarbons |
| 05/05/1993 | EP0539858A1 Process for producing grain-oriented electrical steel strip having high magnetic flux density |
| 05/05/1993 | CN1020476C Process for applying nitride layers to titanium |
| 05/04/1993 | US5208073 Fluorinating surface layer; removal before painting |
| 05/04/1993 | US5208070 Method of aluminum plating an article |
| 05/04/1993 | US5208069 Silane precursor |
| 04/29/1993 | WO1993008022A1 Metallic material excellent in resistance to chemical solution and chemical solution treating device or parts thereof using said material |
| 04/27/1993 | US5205873 Mixture of hydrogen and ethylene fuel gas |
| 04/21/1993 | CN1071207A Hard austenitic stainless steel screw and process for preparing same |
| 04/20/1993 | US5204210 Applying diamond powder layer to photoresist; exposure, development; carbonizing photoresist, removal with hydrogen and carbon-containing gases |
| 04/20/1993 | CA1316436C Accelerated whisker growth on iron-chromium-aluminum alloy foil |
| 04/14/1993 | EP0537062A1 Treatment method for vapor deposition of a carbon layer on the surface of a metallic substrate |
| 04/14/1993 | EP0536986A1 A method for steel surface hardening treatment and an apparatus therefor |
| 04/14/1993 | CN1020289C High concentration carburizing of steel with low carbon and high chromium content |
| 04/07/1993 | EP0535354A1 Method for forming a nitride layer using preheated ammonia |
| 04/07/1993 | EP0535319A1 Vacuum furnace for plasma carburization of metallic workpieces |