| 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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| 01/13/1988 | EP0252479A2 Method for surface treatment and treating material therefor |
| 01/12/1988 | US4719075 Precipitation hardening |
| 01/05/1988 | US4717429 Process for the removal of alkali metal nitrite from nitrate containing salt baths |
| 12/29/1987 | US4715937 Low-temperature direct nitridation of silicon in nitrogen plasma generated by microwave discharge |
| 12/29/1987 | US4715902 Process for applying thermal barrier coatings to metals and resulting product |
| 12/29/1987 | CA1230804A1 Process for boriding metals and metal alloys by means of solid boriding agents |
| 12/22/1987 | US4714632 Method of producing silicon diffusion coatings on metal articles |
| 12/22/1987 | US4714497 Process for the preparation of ferrous parts of a color television tube and furnace for operating such a process |
| 12/15/1987 | US4713122 Production of thin flat articles with hardened surfaces |
| 12/09/1987 | EP0248431A2 Method of producing outer coating layers on heat and corrosion resistant austenitic steels |
| 12/09/1987 | CN87102165A Process of protective coating of iron and steel products |
| 12/08/1987 | US4711676 Carburized pin for chain |
| 12/03/1987 | DE3618346A1 Process and apparatus for disposing of nitriding atmosphere gases originating from industrial furnaces and used for nitriding or nitrocarburising |
| 12/03/1987 | DE3618052A1 Process for nitrocarburising castings of steel or iron |
| 12/02/1987 | EP0247985A2 Cemented carbide with a binder phase gradient and method of making the same |
| 12/01/1987 | US4710238 Iron nitride surface, and undercoating of nitrided trace elements |
| 11/25/1987 | CN87102149A Control of gas carburization liquid and liquid dorp injector |
| 11/19/1987 | EP0246211A2 Sintered body for chip forming machining |
| 11/04/1987 | EP0244253A1 Surface treatment of titanium articles |
| 11/03/1987 | US4704299 Process for low temperature curing of sol-gel thin films |
| 11/03/1987 | US4704168 Ion-beam nitriding of steels |
| 11/03/1987 | CA1228789A1 Methods and compositions for boronizing metallic surfaces |
| 10/28/1987 | CN86108780A Sinter-boronised integral process of fe-based power metallurgical prod. |
| 10/27/1987 | US4702779 Heat process for producing corrosion resistant steel articles |
| 10/22/1987 | WO1987006273A2 Coating to protect against wear and fretting corrosion of, in particular, metal mechanical components held together by frictional adherence |
| 10/21/1987 | EP0242100A2 Coated article and method of producing same |
| 10/21/1987 | EP0242089A1 Method of improving surface wear resistance of a metal component |
| 10/21/1987 | EP0242032A2 Method of producing low core losses in oriented silicon steels |
| 10/21/1987 | CN86102217A Vacuum ionic carburization without external heat source |
| 10/06/1987 | US4698237 Metal surface hardening by carbide formation |
| 10/06/1987 | CA1227727A1 Method for finishing steel shapes with magnetite and product obtained therefrom |
| 09/30/1987 | EP0238666A1 Surface treating method and apparatus. |
| 09/29/1987 | US4696581 Rolling bearing |
| 09/23/1987 | EP0237684A2 Production of integrated-circuit devices incorporating a diffusion stop for oxygen |
| 09/22/1987 | US4694558 Bimetal thermostats and method of manufacture |
| 09/16/1987 | EP0236823A2 Metallic semi-finished product, process for its manufacture and uses of the semi-finished product |
| 09/16/1987 | EP0236639A1 Flexible automatic installation for performing a fast thermochemical treatment |
| 09/16/1987 | CN86107845A Cast alloy iron cylinder sleeve with high wear-resisting and good matching properties |
| 09/15/1987 | US4693208 Feeder of oxygen gas containing steam |
| 09/11/1987 | WO1987005335A1 Shallow case hardening and corrosion inhibition process |
| 09/08/1987 | US4692659 Inner shield with blackened area of aluminum, iron and silicon; contrast; emission life |
| 09/08/1987 | US4692385 Triplex article |
| 09/02/1987 | EP0235067A1 Method for the protective coating of metallurgical products |
| 09/02/1987 | EP0234200A1 Process and device for the heat treatment of longitudinally welded pipes |
| 09/01/1987 | CA1226376A1 Electron beam enhanced surface modification for making highly resolved structures |
| 08/26/1987 | EP0233574A2 Method for controlling the oxygen content in agglomerated molybdenum powder |
| 08/26/1987 | CN87100626A Automated flexible installation for rapid thermochemical treatment |
| 08/20/1987 | DE3604440A1 Furnace for producing Fe2B layers on workpieces of iron-based alloys (ferrous alloys) |
| 08/18/1987 | CA1225536A1 High efficiency reduction carburization |
| 08/11/1987 | CA1225311A1 Cylinder liners |
| 08/04/1987 | US4684411 Oxidation, hea treatment |
| 08/04/1987 | US4684400 Heating with water vapor in nonoxidizing atmosphere |
| 07/30/1987 | EP0146595A4 Method and apparatus for introducing normally solid materials into substrate surfaces. |
| 07/29/1987 | CN86108935A Method of producing silican diffusion coatings on metal articles |
| 07/22/1987 | EP0229325A2 Method of manufacturing a corrosion resistant steel component |
| 07/21/1987 | CA1224389A1 Salt bath for the currentless production of wear- resistant boride layers |
| 07/14/1987 | US4679640 Method for case hardening rock bits and rock bits formed thereby |
| 07/07/1987 | CA1223760A1 Crucible for receiving salt baths for the boration of steel |
| 07/01/1987 | EP0226729A1 Method for producing a hardened non-magnetisable rolling bearing member from an austenitic material and rolling bearing member so produced |
| 06/30/1987 | CA1223487A1 Oxide bond for aluminum oxide coated cutting tools |
| 06/24/1987 | EP0226130A2 Method of producing silicon diffusion coatings on metal articles |
| 06/17/1987 | CN85201850U Bushless boronized barrel of oil-pump |
| 06/11/1987 | DE3543440A1 Process for cementation (carburizing) in case hardening |
| 06/09/1987 | US4672170 Apparatus for thermochemical treatments of metals by ionic bombardment |
| 06/09/1987 | US4671824 Processes for producing improved wear resistant coatings on zirconium shapes |
| 06/09/1987 | US4671496 Fluidized bed apparatus for treating metals |
| 06/03/1987 | CN85204461U Continuous furnace for heat-treatment of metal parts |
| 06/03/1987 | CN85107162A Controlled deep ion-nitridation method |
| 06/02/1987 | US4670292 Method for injecting exotic atoms into a solid with electron beams |
| 06/02/1987 | US4670291 Method of controlling supersaturated injection and concentration of exotic atoms into deep portions of a solid with a high energy electron beam |
| 05/26/1987 | US4668527 Gold into silicon substrates |
| 05/19/1987 | US4666535 Method of producing low core losses in oriented silicon steels |
| 05/12/1987 | US4665338 Shadow mask of iron-nickel alloy and spinel-type oxide |
| 05/12/1987 | US4664722 Method for protecting from hardening a selected region of a steel structure |
| 05/06/1987 | CN85107920A Low-carbon steel scissors and its heat-treating technology |
| 04/28/1987 | US4661171 Method for treating the surface of stainless steel by high temperature oxidation |
| 04/28/1987 | US4660444 Hardening of selected areas of an earth boring rockbit |
| 04/22/1987 | EP0218916A1 A process to form a sulphide case at the surface of a metal part |
| 04/21/1987 | US4659628 Method of presubstrate treatment for painting utilizing a gas soft nitriding |
| 04/21/1987 | US4659379 Nickel anode electrode |
| 04/21/1987 | US4659241 Rolling element bearing member |
| 04/16/1987 | DE3633490A1 Rotor for a ring-spinning frame or ring-twisting frame |
| 04/15/1987 | CN86204249U Reaction vacuum cnamber for the synthesis of surface materials |
| 04/15/1987 | CN85107723A Nitridation technique for diesel engine's needle valve couplings |
| 04/09/1987 | WO1987002073A1 Surface treating method and apparatus |
| 04/08/1987 | EP0217421A2 Corrosion resistant steel components and method of manufacture thereof |
| 04/08/1987 | EP0217420A2 Corrosion resistant steel components and method of manufacture thereof |
| 04/07/1987 | US4655853 Method for making powder metal forging preforms of high-strength ferrous-base alloys |
| 04/07/1987 | US4655851 Simultaneous carburizing and boronizing of earth boring drill bits |
| 04/01/1987 | EP0216067A1 Process and apparatus for removing alkali nitrite from salt baths containing nitrate |
| 03/26/1987 | WO1987001738A1 Method and device for chemical treatment, particularly thermochemical treatment and chemical deposition in a large volume homogeneous plasma |
| 03/26/1987 | DE3631389A1 Process for enriching the atmosphere of furnaces for the thermochemical treatment of metal components |
| 03/18/1987 | EP0214944A2 Powder particles for fine-grained hard material alloys and a process for the preparation of such particles |
| 03/11/1987 | EP0213991A1 Process for rapid cementation in a continuous furnace |
| 03/11/1987 | CN85106828A Process for forming sulphide layer on the surface metal parts and apparatus therefor |
| 03/10/1987 | US4649084 Process for adhering an oxide coating on a cobalt-enriched zone, and articles made from said process |
| 03/10/1987 | US4649083 Aluminum alloy and oxide layer |
| 03/10/1987 | US4648952 Nitriding |
| 03/04/1987 | EP0213011A1 Process for speedily and homogeneously carburizing a charge in a furnace |
| 02/25/1987 | CN85106068A Process for post-treatment of nitriding |