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1. (WO2018181348) STAINLESS STEEL MATERIAL, CONSTITUENT MEMBER, CELL, AND FUEL CELL STACK
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2018/181348 International Application No.: PCT/JP2018/012485
Publication Date: 04.10.2018 International Filing Date: 27.03.2018
IPC:
H01M 8/0208 (2016.01) ,C22C 38/00 (2006.01) ,C22C 38/60 (2006.01) ,H01M 8/12 (2016.01) ,C21D 1/76 (2006.01) ,C21D 9/46 (2006.01)
[IPC code unknown for H01M 8/0208]
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
60
containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8
Fuel cells; Manufacture thereof
10
Fuel cells with solid electrolytes
12
operating at high temperature, e.g. with stabilised ZrO2 electrolyte
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
1
General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering
74
Methods of treatment in inert gas, controlled atmosphere, vacuum, or pulverulent material
76
Adjusting the composition of the atmosphere
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
9
Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles; Furnaces therefor
46
for sheet metals
Applicants:
日鉄ステンレス株式会社 NIPPON STEEL STAINLESS STEEL CORPORATION [JP/JP]; 東京都千代田区丸の内一丁目8番2号 8-2, Marunouchi 1-chome, Chiyoda-ku, Tokyo 1000005, JP
Inventors:
西本 工 NISHIMOTO, Takumi; JP
樽谷 芳男 TARUTANI, Yoshio; JP
Agent:
特許業務法人ブライタス BRIGHTAS IP ATTORNEYS; 大阪府大阪市北区曽根崎2丁目5番10号 2-5-10, Sonezaki, Kita-ku, Osaka-shi, Osaka 5300057, JP
Priority Data:
2017-06160527.03.2017JP
Title (EN) STAINLESS STEEL MATERIAL, CONSTITUENT MEMBER, CELL, AND FUEL CELL STACK
(FR) MATÉRIAU EN ACIER INOXYDABLE, ÉLÉMENT CONSTITUTIF, PILE ET ASSEMBLAGE DE PILES À COMBUSTIBLE
(JA) ステンレス鋼材、構成部材、セルおよび燃料電池スタック
Abstract:
(EN) A stainless steel material comprising a base that comprises ferritic stainless steel, a Cr oxide layer formed on the surface of the base, and a spinel-type oxide layer formed on the surface of the Cr oxide layer. The chemical composition of the base satisfies [16.0 ≤ Cr + 3 × Mo – 2.5 × B – 17 × C – 3 × Si ≤ 35.0]. The thickness (TCr) of the Cr oxide layer and the thickness (TS) of the spinel-type oxide layer satisfy [0.5 ≤ TCr/TS ≤ 6.7]. The base has a precipitate that includes one or more selected from composite precipitates which have M23C6, M2B, or M2B as the precipitation nucleus and in which M23C6 has precipitated on the surface thereof, and composite precipitates which have NbC as the precipitation nucleus and in which M23C6 has precipitated on the surface thereof. A portion of the precipitate projects from the surface of the Cr oxide layer.
(FR) L'invention concerne un matériau en acier inoxydable comprenant une base qui comprend de l'acier inoxydable ferritique, une couche d'oxyde de Cr formée sur la surface de la base et une couche d'oxyde de type spinelle formée sur la surface de la couche d'oxyde de Cr. La composition chimique de la base satisfait [16,0 ≤ Cr + 3 × Mo – 2,5 × B – 17 × C – 3 × Si ≤ 35,0]. L'épaisseur (TCr) de la couche d'oxyde de Cr et l'épaisseur (TS) de la couche d'oxyde de type spinelle satisfont [0,5 ≤ TCr/TS ≤ 6,7]. La base contient un précipité qui comprend un ou plusieurs précipités sélectionnés parmi des précipités composites qui ont M23C6, M2B ou M2B en tant que noyau de précipitation et dans lesquels M23C6 a été précipité à la surface, et des précipités composites qui ont NbC en tant que noyau de précipitation et dans lesquels M23C6 a été précipité à la surface. Une partie du précipité fait saillie à partir de la surface de la couche d'oxyde de Cr.
(JA) フェライト系ステンレス鋼からなる基材と、基材の表面に形成されたCr酸化物層と、Cr酸化物層の表面に形成されたスピネル型酸化物層とを備え、基材の化学組成が、[16.0≦Cr+3×Mo-2.5×B-17×C-3×Si≦35.0]を満足し、Cr酸化物層の厚さ(TCr)およびスピネル型酸化物層の厚さ(T)が、[0.5≦TCr/T≦6.7]を満足し、基材中に、M23、MB、MBを析出核としてその表面にM23が析出した複合析出物、およびNbCを析出核としてその表面にM23が析出した複合析出物から選択される1種以上を含む析出物を有し、析出物は、その一部がCr酸化物層の表面から突出している、ステンレス鋼材。
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 Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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: Japanese (JA)
Filing Language: Japanese (JA)