Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2019049784) SiC CERAMIC USING COATED SiC NANOPARTICLES AND PRODUCTION METHOD THEREFOR
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2019/049784 International Application No.: PCT/JP2018/032367
Publication Date: 14.03.2019 International Filing Date: 31.08.2018
IPC:
C04B 35/577 (2006.01) ,C04B 35/628 (2006.01) ,C04B 35/645 (2006.01)
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35
Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
515
based on non-oxides
56
based on carbides
565
based on silicon carbide
569
Fine ceramics
577
Composites
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35
Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
622
Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
626
Preparing or treating the powders individually or as batches
628
Coating the powders
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35
Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
622
Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
64
Burning or sintering processes
645
Pressure sintering
Applicants:
国立研究開発法人物質・材料研究機構 NATIONAL INSTITUTE FOR MATERIALS SCIENCE [JP/JP]; 茨城県つくば市千現一丁目2番地1 2-1, Sengen 1-chome, Tsukuba-shi, Ibaraki 3050047, JP
国立大学法人京都大学 KYOTO UNIVERSITY [JP/JP]; 京都府京都市左京区吉田本町36番地1 36-1, Yoshida-honmachi, Sakyo-ku, Kyoto-shi Kyoto 6068501, JP
Inventors:
下田 一哉 SHIMODA, Kazuya; JP
村上 秀之 MURAKAMI, Hideyuki; JP
檜木 達也 HINOKI, Tatsuya; JP
Agent:
相川 俊彦 AIKAWA, Toshihiko; JP
Priority Data:
2017-17344808.09.2017JP
Title (EN) SiC CERAMIC USING COATED SiC NANOPARTICLES AND PRODUCTION METHOD THEREFOR
(FR) CÉRAMIQUE SiC UTILISANT DES NANOPARTICULES DE SiC REVÊTUES ET SON PROCÉDÉ DE PRODUCTION
(JA) 被覆SiCナノ粒子を用いたSiCセラミックス及びその製造方法
Abstract:
(EN) Provided are a SiC ceramic which has superior compactness and superior thermal and mechanical characteristics in room-temperature and high-temperature environments even when fired at a relatively low temperature, and a production method for the SiC ceramic. According to the present invention, SiC fine particles having an average particle size of 300 nm or less are prepared, and, on each of the surfaces thereof, a coating layer of about 1-10 nm is formed by a gas phase method or a liquid phase method. The coating layer may contain Al. A powder comprising the thus-prepared coated SiC fine particles is sintered at a temperature of 1600-1900ºC. This allows production of a SiC sintered body having superior compactness and superior thermal and mechanical characteristics in room-temperature and high-temperature environments.
(FR) L'invention concerne une céramique SiC ayant une compacité supérieure et des caractéristiques thermiques et mécaniques supérieures dans des environnements à température ambiante et à hautes températures même quand elle est cuite à une température relativement basse, et un procédé de production de ladite céramique SiC. Selon la présente invention, des particules fines de SiC d'une taille de particule moyenne de 300 nm ou moins sont préparées, et, sur chacune de leurs surfaces, une couche de revêtement d'environ 1 à 10 nm est formée par un procédé en phase gazeuse ou un procédé en phase liquide. La couche de revêtement peut contenir du Al. Une poudre comprenant les particules fines de SiC revêtues ainsi préparées est frittée à une température de 1600 à 1900 °C, ladite poudre permettant la production d'un corps fritté en SiC ayant une compacité supérieure et des caractéristiques thermiques et mécaniques supérieures dans des environnements à température ambiante et à hautes températures.
(JA) 比較的低温で焼成しても、緻密性とともに常温・高温環境下で熱的及び機械的特性に優れたSiCセラミックス及びその製造方法を提供する。平均粒径300nm以下のSiC微粒子を準備し、その表面に、1~10nm程度の被覆層を気相法又は液相法にて形成させる。この被覆層は、Alを含んでよい。このようにして準備した被覆SiC微粒子からなる粉末を、1600℃以上1900℃以下の温度で焼結する。これにより、緻密性とともに常温・高温環境下で熱的及び機械的特性に優れたSiC焼結体を得ることができる。
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)