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1. (WO2018039785) ELECTRO-SPARK DEPOSITION OF MOLYBDENUM ON STAINLESS STEEL AND PRODUCTS THEREOF
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/039785 International Application No.: PCT/CA2017/051013
Publication Date: 08.03.2018 International Filing Date: 29.08.2017
IPC:
C23C 26/02 (2006.01) ,B23K 35/24 (2006.01) ,B23K 9/04 (2006.01) ,B23K 9/16 (2006.01) ,C23C 10/04 (2006.01) ,C23C 10/28 (2006.01)
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
26
Coating not provided for in groups C23C2/-C23C24/87
02
applying molten material to the substrate
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
35
Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
22
characterised by the composition or nature of the material
24
Selection of soldering or welding materials proper
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
9
Arc welding or cutting
04
Welding for other purposes than joining, e.g. built-up welding
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
9
Arc welding or cutting
16
making use of shielding gas
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
10
Solid state diffusion of only metal elements or silicon into metallic material surfaces
04
Diffusion into selected surface areas, e.g. using masks
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
10
Solid state diffusion of only metal elements or silicon into metallic material surfaces
28
using solids, e.g. powders, pastes
Applicants:
HUYS INDUSTRIES LIMITED [CA/CA]; 175 Toryork Drive, Unit #35 Weston, Ontario M9L 1X9, CA
Inventors:
JIAO, Zhen; CA
ZHOU, Yunhong; CA
Agent:
BERESKIN & PARR LLP / S.E.N.C.R.L., S.R.L.; Scotia Plaza, 40 King Street West 40th Floor Toronto, Ontario M5H 3Y2, CA
Priority Data:
62/381,95831.08.2016US
Title (EN) ELECTRO-SPARK DEPOSITION OF MOLYBDENUM ON STAINLESS STEEL AND PRODUCTS THEREOF
(FR) DÉPÔT PAR ÉLECTRO-ÉTINCELAGE DE MOLYBDÈNE SUR DE L'ACIER INOXYDABLE ET PRODUITS ASSOCIÉS
Abstract:
(EN) Molybdenum is alloyed into stainless steel surface by electro-spark deposition technique. Shielding gas is used during electro-spark deposition process to minimize the oxidation of materials. Control of electro-spark voltage, frequency, capacitance, time can determine the alloying depth of Molybdenum. The alloyed surface thickness varies from 5 μηι to 80 μπι depending on the electro-spark deposition parameters. The alloyed surface comprises, by weight, 15 to 40% of Molybdenum, 8 to 22% of Cr, 0-15% of other alloy elements and impurities. The molybdenum alloyed stainless steel surface exhibits improvement in micro-hardness, wear resistance, and especially corrosion resistance in sodium chloride solutions. Thus, the present invention would be utilized in marine and handling of brines application, as well as in other applications which better corrosion resistance of stainless steel is desired.
(FR) Cette invention concerne une technique de dépôt par électro-étincelage permettant d'allier du molybdène dans une surface en acier inoxydable. Un gaz de protection est utilisé pendant le processus de dépôt par électro-étincelage afin de minimiser l'oxydation des matériaux. La commande de la tension, de la fréquence, de la capacité et de la durée de l'électro-étincelage peut déterminer la profondeur d'alliage du molybdène. L'épaisseur de surface la alliée varie de 5 à 80 μm en fonction des paramètres de dépôt par électro-étincelage. La surface alliée comprend, en poids, 15 à 40 % de molybdène, 8 à 22 % de Cr, 0 à 15 % d'autres éléments d'alliage et des impuretés. La surface en acier inoxydable allié au molybdène présente une amélioration de la micro-dureté, de la résistance à l'usure, et en particulier de la résistance à la corrosion dans des solutions de chlorure de sodium. Ainsi, la présente invention serait peut être utilisée dans des applications maritimes et de manipulation de saumures, ainsi que dans d'autres applications nécessitant une meilleure résistance à la corrosion de l'acier inoxydable.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)