| 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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| 08/26/1998 | EP0860516A2 Method for forming metallic coat |
| 08/26/1998 | EP0860512A2 Method/apparatus for making a treating gas for the thermal treatment of a metallic product |
| 08/25/1998 | US5798141 Simultaneously supplying a reactive gas and an inert gas to a reaction tube and cotrolling the partial pressure of reactive gas constant by adjusting the flow rate of these gases; improved stability of film quality |
| 08/25/1998 | US5798134 Heat-oxidizing a composite film of metallic nickel and carbon |
| 08/25/1998 | US5798027 Process for depositing optical thin films on both planar and non-planar substrates |
| 08/25/1998 | US5798002 Method of and device for producing carbide and carbon solid solution containing surface layers |
| 08/25/1998 | US5797357 Apparatus for forming protective films in water feed pipes of boiler |
| 08/19/1998 | EP0859068A1 Method and apparatus for controlling the atmosphere in a heat treatment furnace |
| 08/19/1998 | EP0859067A1 Method and apparatus for controlling the atmosphere in a heat treatment furnace |
| 08/19/1998 | EP0859066A1 AlN dispersed powder aluminum alloy and method of preparing the same |
| 08/19/1998 | EP0858579A1 Modification of metal surfaces |
| 08/19/1998 | CN2288186Y Ion sulfurizing equipment |
| 08/18/1998 | US5795406 Cementation method of metals |
| 08/12/1998 | EP0857224A2 Durable plasma treatment apparatus and method |
| 08/11/1998 | US5792326 Method and apparatus for generating ozone and methods of its use |
| 08/11/1998 | US5792289 Surface treating by remelting and rapid solidification to form wear resistant layer |
| 08/11/1998 | US5792282 Preheating steels in presence of fluorine or gases containing fluoride, then heating at lower temperature for longer time in mixture of hydrogen, carbon monoxide, carbon dioxide and nitrogen, for hardness, corrosion resistance |
| 08/06/1998 | DE19804172A1 Hot or warm working steel tool, especially punch |
| 08/06/1998 | DE19719225C1 Method and apparatus for controlling a nitriding or nitro-carburising atmosphere |
| 08/05/1998 | EP0856594A1 Apparatus for plasma treatment of substrates |
| 08/05/1998 | EP0856587A1 Process for the heat treatment of iron-based metal parts in an active atmosphere with a high potential of carbon |
| 08/05/1998 | EP0668798A4 Biocompatible, surface modified materials and method of making the same. |
| 08/04/1998 | US5789086 Chromium oxide and iron oxide layers; ultrahigh vacuum, ultraclean reduced pressure semiconductors; corrosion resistance |
| 07/29/1998 | CN1189194A Base material for producing blades for circular saws, friction saw, frame saws as well as cutting and scraping devices |
| 07/29/1998 | CN1188813A Compound treatment method for ion nitrogen carbon co-seeping and medium temperature ion sulfuriztion |
| 07/29/1998 | CN1039353C Nitrided stainless steel products |
| 07/29/1998 | CA2228074A1 Process for the heat treatment of iron-based metal parts in an active atmosphere with a high potential of carbon |
| 07/28/1998 | US5786296 Thin-walled, monolithic iron oxide structures made from steels |
| 07/28/1998 | US5786073 Soldering projections having oxidation resistant protective coatings containing fluoride of tin and/or lead, for flip chips |
| 07/28/1998 | US5785838 Method for producing an oxide film |
| 07/28/1998 | US5785771 Masking shaped workpiece, hardening, stripping, electroplating |
| 07/23/1998 | DE19702124A1 Workpiece surface cleaning, activating, wetting and/or coating |
| 07/22/1998 | EP0680393B1 Method of recycling scrap metal |
| 07/22/1998 | CN1188157A Zirconium material prefilming method and its equipment |
| 07/21/1998 | US5783641 Process for modifying surfaces of polymers, and polymers having surfaces modified by such process |
| 07/21/1998 | US5782953 Surface hardened powdered metal stainless steel parts |
| 07/21/1998 | US5782697 Shaft abutment screw, especially for an electric motor, and a method of making such a screw |
| 07/14/1998 | US5780165 Martensitic stainless steels; heat resistance, toughness, noncracking |
| 07/14/1998 | US5779842 Forming an erosion resistant coating on an electrode |
| 07/09/1998 | WO1998029577A1 Corrosion resistant carbon steel |
| 07/09/1998 | CA2247028A1 Corrosion resistant carbon steel |
| 07/08/1998 | EP0852294A2 Variable capacity swash plate compressor and method of surface treatment of a swash plate thereof |
| 07/08/1998 | CN1186872A Method for treating metal surface, rotary shaft for refrigerant compressor treated by method, vane for refriegerant compressor treated by method, and refrigerant compressor using the same |
| 07/08/1998 | CN1038992C Copper and resin bonding method |
| 07/07/1998 | US5776551 Use of plasma activated NF3 to clean solder bumps on a device |
| 07/07/1998 | US5776266 Oxidation protection method for titanium |
| 07/02/1998 | WO1998028453A1 Process for the treatment of grain oriented silicon steel |
| 07/02/1998 | WO1998028452A1 Process for the production of oriented-grain electrical steel sheet with high magnetic characteristics |
| 07/02/1998 | WO1998028451A1 Process for the production of grain oriented silicon steel sheet |
| 07/02/1998 | WO1998028450A1 High strength deep drawing steel developed by reaction with ammonia |
| 07/02/1998 | CA2250742A1 High strength deep drawing steel developed by reaction with ammonia |
| 06/30/1998 | US5774516 Modification of oxide film electrical conductivity to maintain low corrosion potential in high-temperature water |
| 06/30/1998 | US5772795 Nitriding in annealing furnace; strengthening |
| 06/25/1998 | WO1998027242A1 High bearing-strength steel parts and processes for the production thereof |
| 06/25/1998 | DE19756202A1 Increasing fatigue resistance of case hardened component |
| 06/24/1998 | EP0849511A2 Compression piston ring |
| 06/23/1998 | US5769966 Insulator coating for high temperature alloys method for producing insulator coating for high temperature alloys |
| 06/23/1998 | US5769965 Annealing, then forming nitride layer on electromagnetic fuel injection valves, chromium steels |
| 06/18/1998 | WO1998026105A1 Method for evaluating the parameters of an ionized atmosphere during the thermochemical treatment of steels and alloys in a glow discharge and apparatus for implementation of the method |
| 06/17/1998 | CN1038772C Method for producing knife clip of sheeting machine |
| 06/16/1998 | US5768330 Co-deposition of palladium during oxide film growth in high-temperature water to mitigate stress corrosion cracking |
| 06/16/1998 | CA2109366C Passivation of carbon steel using encapsulated oxygen |
| 06/10/1998 | EP0846929A2 Part or jig for gas carburizing furnace |
| 06/10/1998 | EP0846783A1 Method for color development of metallic titanium, and black titanium and colored titanium prepared by said method |
| 06/10/1998 | CN1184510A Method and equipment for vacuum carburization and products of carburization |
| 06/10/1998 | CN1038696C Controllable atmosphere treatment with high temperature anti-wearing center |
| 06/02/1998 | US5759708 Process for depositing thin film layers onto surfaces modified with organic functional groups and products formed thereby |
| 06/02/1998 | US5759623 Method for producing a high adhesion thin film of diamond on a Fe-based substrate |
| 05/26/1998 | US5756222 Corrosion-resistant aluminum article for semiconductor processing equipment |
| 05/20/1998 | CN1181999A Cast steel part with surface layer containing spherical graphite and alloy carbide and its preparing method |
| 05/19/1998 | US5753076 Method for creping tissue |
| 05/19/1998 | US5753052 Nitriding in a molten bath followed by oxidizing or phosphating |
| 05/13/1998 | CN1181787A Modification of surfaces of polymers, metal or ceramic |
| 05/12/1998 | US5750205 Surface treatment of metals by shock-compressed plasma |
| 05/07/1998 | DE19644051A1 Monitoring carbonitriding and nitriding gas mixtures |
| 05/06/1998 | EP0797631A4 Artificial patina |
| 05/06/1998 | CN1038262C Surface-treatment method for material by use of impulse high energy-density plasma |
| 05/05/1998 | US5746841 Process for passivating treatment of piping system for high-purity gas |
| 04/30/1998 | DE19652125C1 Nitriding or carbonitriding atmosphere regulation |
| 04/30/1998 | DE19644153A1 Multistage low pressure plasma cleaning process |
| 04/30/1998 | DE19643752A1 Corrosion- and oxidation-resistant material, used as heat exchanger material |
| 04/29/1998 | CN1038200C Method for manufacturing antirust iron kitchen utensils |
| 04/22/1998 | EP0703994B1 Method and device for the heat treatment of workpieces |
| 04/22/1998 | CN2279365Y Large industrialized synthetic plasma sulfurized furnace |
| 04/21/1998 | US5741374 High strength, ductile, Co-Fe-C soft magnetic alloy |
| 04/21/1998 | US5741372 Method of producing oxide surface layers on metals and alloys |
| 04/21/1998 | US5741371 Controlling carbon monoxide |
| 04/15/1998 | EP0835949A1 Method for treating metal surface, rotary shaft and vane for refrigerant compressor treated by the method, and refrigerant compressor using the same |
| 04/15/1998 | EP0835331A1 Base material for producing blades for circular saws, cutting-off wheels, mill saws as well as cutting and scraping devices |
| 04/15/1998 | CN2278697Y Ion cementing nitriding furnace |
| 04/08/1998 | CN1037987C A loom guide blade with its surface nitrided for hardening |
| 04/07/1998 | US5735971 Strengthening the passive layer by oxidizing in salt melt |
| 04/02/1998 | DE19640461A1 Ceramic heat protection layer production on metal |
| 04/01/1998 | CN1177651A Device for processing metal workpiece by plasma carburetion, and method thereof |
| 03/31/1998 | US5733116 Heat treatment apparatus |
| 03/26/1998 | WO1998012361A1 Case-hardened stainless steel bearing component and process for manufacturing the same |
| 03/18/1998 | EP0829554A1 Low pressure cementation apparatus with compartments disposed one behind the other |
| 03/18/1998 | EP0828688A1 Aluminium nitride granules |
| 03/17/1998 | US5728603 Method of forming a crystalline ferroelectric dielectric material for an integrated circuit |
| 03/17/1998 | US5728475 Thermal diffusion boride surface treatment of a piston shoe made of a cold workable cobalt based alloy provides wear and corrosion resistance; hardfacing/metals/ |