| 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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| 04/01/1993 | WO1993006257A1 Process and apparatus for surface hardening of refractory metal workpieces |
| 03/31/1993 | EP0534432A2 Process for production of oriented electrical steel sheet having excellent magnetic properties |
| 03/31/1993 | EP0534010A1 Thermochemical treatment of machinery components for improved corrosion resistance |
| 03/30/1993 | US5198026 Colored zinc powder, its method of production and method for producing colored article |
| 03/24/1993 | EP0533211A1 Far-infrared emitter of high emissivity and corrosion resistance and method for the preparation thereof |
| 03/24/1993 | EP0533128A1 Piston ring made of a titanium alloy and process for production thereof |
| 03/24/1993 | EP0532806A1 A hard austenitic stainless steel screw and a method for manufacturing the same |
| 03/17/1993 | EP0532386A1 Process and apparatus for carburizing steel in an atmosphere of low pressure |
| 03/16/1993 | US5194228 Sources of oxygen and hydrocarbon gas at pressures above that of endothermic gas to be produced |
| 03/16/1993 | US5194218 Tungsten-yttria carbide coating for conveying copper |
| 03/16/1993 | US5194097 Method of nitriding steel and heat treat furnaces used therein |
| 03/16/1993 | US5194096 Carburizing treatment of a steel with reduction of the hydrogen content in the carburized layer |
| 03/16/1993 | CA1314462C Method of refining magnetic domains of electrical steels using phosphorus |
| 03/10/1993 | EP0530779A2 Improved titanium carbonitride coated stratified substrate and cutting inserts made from the same |
| 03/10/1993 | EP0530513A1 Heat treat furnace system for performing different carburizing processes simultaneously |
| 03/10/1993 | CN1020035C Dental high speed worm gear lathing needle and the making method therof |
| 03/09/1993 | US5192610 Corrosion-resistant protective coating on aluminum substrate and method of forming same |
| 03/09/1993 | US5192485 Continuous annealing line having carburizing/nitriding furnace |
| 03/09/1993 | US5192323 Titanium substrate with a nitride coating and solid solutions of nitrogen, oxygen and carbon diffusion layer and hardening |
| 03/04/1993 | WO1993004210A1 Method for forming oxide film |
| 03/04/1993 | DE4128437A1 Gas or plasma processing of high-chrome steel workpiece surfaces - involves forming connecting layer with improved corrosion w.r.t. graphite and wear resistance for treating e.g valve spindles |
| 03/03/1993 | CN1069527A Carbon arc carburizing |
| 03/02/1993 | US5190600 Method of monitoring a heat treatment with carbon penetration |
| 03/02/1993 | US5190598 Boride layer on ferrous substrate, austenizing the boride layer and sealing |
| 02/25/1993 | DE4227447A1 Gear wheel for vehicle axle - has thin case-hardened toothed rim and hard core |
| 02/24/1993 | EP0527926A1 Process for depositing thin film layers onto surfaces modified with organic functional groups and products formed thereby. |
| 02/24/1993 | CN1069293A System for passivation of metal surfaces affected by operating conditions and agents promoting corrosion |
| 02/23/1993 | US5188979 Depositing TI on substrate; reacting with NH3; barrier to block diffusion |
| 02/23/1993 | US5188714 Flushing with inert dry gas while baking, cooling |
| 02/17/1993 | CN1069076A Quick & deep nitrogenation treating technology |
| 02/17/1993 | CN1069075A Strengthen nitrogenation treatment technology |
| 02/16/1993 | US5187670 Control system for scheduling parts in a heat-treating process |
| 02/16/1993 | US5187017 Friction resistance, wear resistance; iron, iron sulfide, and iron nitride layers |
| 02/16/1993 | US5186764 Method and apparatus for treating plates with gas |
| 02/10/1993 | CN1068860A Hard austenitic stainless steel screw |
| 02/03/1993 | EP0525086A1 A method of nitriding refractory metal articles |
| 01/20/1993 | EP0524037A1 Treatment process for iron components to improve simultaneously their corrosion resistance and their friction properties |
| 01/20/1993 | EP0523298A1 A hard austenitic stainless steel screw |
| 01/13/1993 | EP0523021A1 Method of manufacturing an alumina coated sintered body |
| 01/13/1993 | EP0522866A1 Method and apparatus for producing oxide thin film |
| 01/13/1993 | EP0522407A1 Blackening treating method of stainless steel strip surface and blackening treating furnace |
| 01/13/1993 | CN1067929A 钢的氮化方法 Steel nitriding method |
| 01/13/1993 | CN1067846A Copper and resin bonding method |
| 01/12/1993 | US5178908 Process for coating carbonized material with metal |
| 01/07/1993 | WO1993000626A1 System for controlled nitriding |
| 01/06/1993 | CN1067684A Hot treating method for elastic parts |
| 01/05/1993 | US5176760 Nitriding Using Ion Bombardment and Glow Discharge |
| 12/29/1992 | US5174944 Separator for removal of pressure-controlling nitrogen from liquid methanol used in hardening furnace |
| 12/22/1992 | US5173128 Method of producing oriented silicon steel sheet having very high magnetic flux density |
| 12/22/1992 | CA1311668C Method of manufacturing brazable superalloys |
| 12/16/1992 | CN1067073A Method and apparatus for control of carbon in continuous dripping carburizing furnace |
| 12/15/1992 | US5171369 Device for glow potential processing, in particular ionic carburation |
| 12/10/1992 | WO1992021787A1 Method and device for thermochemical treatment of articles |
| 12/10/1992 | WO1992021786A1 Process for forming passive film on stainless steel, and stainless steel and gas- and liquid-contacting part |
| 12/09/1992 | EP0517576A1 Process for storing a gas mixture in passivated metal containers to enhance the stability of gaseous hydride mixtures at low concentration in contact therewith |
| 12/09/1992 | EP0517575A1 Process for drying metal surfaces using gaseous hydrides to inhibit moisture adsorption and for removing adsorbed moisture from the metal surfaces |
| 12/09/1992 | EP0516899A1 Method of nitriding steel |
| 12/09/1992 | CN1019404B Control of gas carburization liquid and liquid drop injector |
| 12/08/1992 | US5169515 Heat treatment of high temperature steels in presence of hydrogen gas, methane, hydrogen sulfide and steam; surface layer enriched in chromium oxide; inhibits coking |
| 12/07/1992 | CA2070504A1 Process for drying metal surfaces using gaseous hydrides to inhibit moisture adsorption and for removing adsorbed moisture from the metal surface |
| 12/04/1992 | CA2070145A1 Process for passivating metal surfaces to enhance the stability of gaseous hydride mixtures at low concentration in contact therewith |
| 12/02/1992 | EP0515701A1 Method of manufacturing a crankshaft |
| 12/01/1992 | US5167943 Titanium nitride coated silicon carbide materials with an interlayer resistant to carbon-diffusivity |
| 12/01/1992 | US5167788 Etchable surface allows for adhesion of applied coatings |
| 12/01/1992 | US5167725 Titanium alloy blade coupler coated with nickel-chrome for ultrasonic scalpel |
| 12/01/1992 | US5167557 Method for manufacturing a shadow mask |
| 11/18/1992 | CN2122146U Droplet meter for chemical heat treatment |
| 11/17/1992 | US5164270 Nickel and/or zirconium implanted on surface of alloy |
| 11/17/1992 | US5164145 Rotary furnace oil seal employing endothermic gas purge |
| 11/11/1992 | EP0512782A1 Stainless steel surface passivation treatment |
| 11/11/1992 | EP0512254A2 Process for uniform thermochemical treatment of steel pieces having difficult accessible areas |
| 11/11/1992 | EP0512113A1 Oxidation treatment apparatus for metal pipes |
| 11/10/1992 | US5162147 Kappa-alumina oxide coated carbide body and method of producing the same |
| 11/10/1992 | CA1309882C Powder particles for fine-grained hard material alloys and a process for the preparation of such particles |
| 11/05/1992 | DE4114124A1 Heat treating work piece of (non) alloyed steel - by applying gas tight layer to surface and heating |
| 11/04/1992 | EP0511699A1 Aluminium-coated iron-chromium foil containing additions of rare earths or yttrium |
| 11/04/1992 | EP0511409A1 Method of manufacturing a rotating shaft of motor |
| 11/03/1992 | US5160553 Cold-worked steel of high compressive strength and articles made thereof |
| 10/28/1992 | EP0510950A1 Treatment of sintered alloys |
| 10/28/1992 | CN1065689A Iron and steel surface boriding process |
| 10/22/1992 | DE4112772A1 Treatment furnace for components - with valves between flow channel and furnace controlling amt. of gas into certain areas of furnace |
| 10/21/1992 | CN1065548A Method for blackening ni-fe shadow mask and mesh belt type blackening lehr for carrying out method |
| 10/20/1992 | US5156805 Process of preparing a ferritic alloy with a wear-resistive alumina scale |
| 10/20/1992 | CA1308888C Ceramic foams |
| 10/14/1992 | CN1018658B Process of protective coating of iron and steel products |
| 10/13/1992 | US5154779 Method of nitriding, carburizing, or oxidizing refractory metal articles using microwaves |
| 10/07/1992 | CN1065102A Arc light ion carburizing and carbonitriding technology and its installation |
| 10/06/1992 | US5152847 Reudicng oxygen and carbon content of metal |
| 10/06/1992 | US5152047 Method of producing laminated metal belt |
| 10/01/1992 | DE4110361A1 Carburising iron@ workpieces in gas phase process - with carbon mon:oxide to hydrogen@ ratio increased during specific phases of process to optimise carbon transfer to iron@ surface |
| 09/30/1992 | EP0506106A1 Cutter, clamp member therefor and method for manufacturing a cutter |
| 09/30/1992 | CN1064963A Method for manufacturing aluminum foils used as electrolytic capacitor electrodes |
| 09/23/1992 | EP0504621A1 Method for the passivation of metal surfaces affected by operating conditions and agents promoting corrosion |
| 09/22/1992 | US5148780 Nickel alloy, nitride, internal combustion engines |
| 09/17/1992 | DE4108073A1 Strong bonding of copper@ to polymer - uses copper@ pretreated by surface oxidn., redn. using formaldehyde soln. and then re-oxidn. by baking |
| 09/16/1992 | CN1018280B Axle of electric immersible pump for oil extraction |
| 09/15/1992 | US5147492 Method of bonding copper and resin |
| 09/15/1992 | US5147140 Ball-and-roller bearing |
| 09/09/1992 | EP0502303A1 Process for treating objects with a gas comprising fluor, and apparatus for carrying out the process |
| 09/08/1992 | US5145741 Directing focused energy beam to delineate, controlled oxidation and decomposition, high speed solidification |