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1. (WO2018056275) CERAMIC COMPOSITION, CUTTING TOOL, AND TOOL FOR FRICTION STIR WELDING USE
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/056275 International Application No.: PCT/JP2017/033792
Publication Date: 29.03.2018 International Filing Date: 20.09.2017
IPC:
C04B 35/117 (2006.01) ,B23B 27/14 (2006.01) ,B23K 20/12 (2006.01)
Applicants: NGK SPARK PLUG CO., LTD.[JP/JP]; 14-18,Takatsuji-cho, Mizuho-ku, Nagoya-shi, Aichi 4678525, JP
Inventors: KATSU Yusuke; JP
KURAHASHI Toshiaki; JP
YAMADA Hideto; JP
MITSUOKA Takeshi; JP
Agent: AOKI Noboru; JP
NAKAJIMA Hiroki; JP
Priority Data:
2016-18355821.09.2016JP
Title (EN) CERAMIC COMPOSITION, CUTTING TOOL, AND TOOL FOR FRICTION STIR WELDING USE
(FR) COMPOSITION CÉRAMIQUE, OUTIL DE COUPE ET OUTIL POUR UTILISATION POUR SOUDAGE PAR FRICTION-MALAXAGE
(JA) セラミック組成物、切削工具、摩擦攪拌接合用工具
Abstract: front page image
(EN) The present invention addresses the problem of improving the properties of a ceramic composition. A ceramic composition comprising alumina (Al2O3) and tungsten carbide (WC), said ceramic composition being characterized in that an atomic layer formed by at least one element selected from transition metals belonging to Groups 4 to 6 on the periodic table, yttrium (Y), scandium (Sc) and lanthanoid elements exists at the grain boundary between alumina (Al2O3) crystal grains and tungsten carbide (WC) crystal grains.
(FR) La présente invention aborde le problème de l'amélioration des propriétés d'une composition céramique. L'invention concerne une composition céramique comprenant de l'alumine (Al2O3) et du carbure de tungstène (WC), ladite composition céramique étant caractérisée en ce qu'une couche atomique, formée par au moins un élément choisi parmi les métaux de transition appartenant aux groupes 4 à 6 du tableau périodique, l'yttrium (Y), le scandium (Sc) et les éléments lanthanides, est présente au niveau du joint de grains entre les grains cristallins d'alumine (Al2O3) et les grains cristallins de carbure de tungstène (WC).
(JA) セラミック組成物の特性の改善を課題とし、アルミナ(Al23)と、炭化タングステン(WC)と、を含有するセラミック組成物であって、周期表の4~6族に属する遷移金属、イットリウム(Y)、スカンジウム(Sc)及びランタノイドから選択される少なくとも1つの元素によって形成された原子層が、アルミナ(Al23)結晶粒子と炭化タングステン(WC)結晶粒子との結晶粒界に存在することを特徴とする。
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)