Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2018088207) STRUCTURAL MATERIAL
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/088207 International Application No.: PCT/JP2017/038449
Publication Date: 17.05.2018 International Filing Date: 25.10.2017
IPC:
C23C 8/22 (2006.01) ,C23C 8/32 (2006.01) ,C21D 1/06 (2006.01) ,C22C 38/00 (2006.01) ,C22C 38/44 (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
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
06
using gases
08
only one element being applied
20
Carburising
22
of ferrous surfaces
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
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
06
using gases
28
more than one element being applied in one step
30
Carbo-nitriding
32
of ferrous surfaces
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
06
Surface hardening
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
18
containing chromium
40
with nickel
44
with molybdenum or tungsten
Applicants:
株式会社日立製作所 HITACHI, LTD. [JP/JP]; 東京都千代田区丸の内一丁目6番6号 6-6, Marunouchi 1-chome, Chiyoda-ku, Tokyo 1008280, JP
Inventors:
小室 又洋 KOMURO Matahiro; JP
波東 久光 HATOU Hisamitsu; JP
野々村 和也 NONOMURA Kazuya; JP
Agent:
戸田 裕二 TODA Yuji; JP
Priority Data:
2016-21772808.11.2016JP
Title (EN) STRUCTURAL MATERIAL
(FR) MATÉRIAU STRUCTURAL
(JA) 構造材
Abstract:
(EN) In order to provide a structural material of improved fatigue strength and abrasion resistance, the present invention provides an iron- and carbon-containing structural material comprising, from the center to the surface, a first layer formed from pearlite, a second layer formed from a mixed phase of martensite and carbide, and a third layer formed from carbide. The carbide of the third layer is represented by MC (M being one element from among Ti, V, Nb, Mo, Ta, and W) and has a concentration gradient in which the M element concentration decreases from the surface to the center.
(FR) Cette invention concerne un matériau structural présentant une résistance à la fatigue et une résistance à l'abrasion améliorées. Ledit matériau structural contient du fer et du carbone comprenant, du centre à la surface, une première couche constituée de perlite, une deuxième couche constituée d'une phase mixte de martensite et de carbure, et une troisième couche constituée de carbure. Le carbure de la troisième couche est représenté par MC (M Étant un élément parmi Ti, V, Nb, Mo, Ta, et W) et il présente un gradient de concentration dans lequel la concentration en l'élément M diminue de la surface vers le centre.
(JA) 疲労強度と耐摩耗性が向上した構造材を提供するために、鉄及び炭素を含有する構造材であって、中心から表面に向かって、パーライトで構成する第1層、マルテンサイト及び炭化物の混合相で構成する第2層、炭化物で構成する第3層を有し、前記第3層の炭化物はMC(MはTi, V, Nb, Mo, Ta, Wの中の1つの元素)で示され、表面から中心に向かって、M元素濃度が減少する濃度勾配を有する。
front page image
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: Japanese (JA)
Filing Language: Japanese (JA)