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1. (WO2017034119) METHOD FOR PREPARING TRANSPARENT YTTRIA THROUGH HOT-PRESS SINTERING
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2017/034119 International Application No.: PCT/KR2016/004240
Publication Date: 02.03.2017 International Filing Date: 22.04.2016
IPC:
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
622
Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
64
Burning or sintering processes
645
Pressure sintering
Applicants:
한국기계연구원 KOREA INSTITUTE OF MACHINERY & MATERIALS [KR/KR]; 대전시 유성구 가정북로 156 156, Gajeongbuk-ro Yuseong-gu Daejeon 34103, KR
Inventors:
박영조 PARK, Young Jo; KR
김하늘 KIM, Ha Neul; KR
김진명 KIM, Jin Myung; KR
고재웅 KO, Jae Woong; KR
이재욱 LEE, Jae Wook; KR
Agent:
특허법인 충정 HWANG MOK PARK IP GROUP; 서울시 강남구 테헤란로14길 16, 8층 (역삼동, 라인빌딩) 8F. (Yeoksam-dong, Line Bldg.) 16, Teheran-ro 14-gil Gangnam-gu Seoul 06234, KR
Priority Data:
10-2015-011979925.08.2015KR
Title (EN) METHOD FOR PREPARING TRANSPARENT YTTRIA THROUGH HOT-PRESS SINTERING
(FR) PROCÉDÉ DE PRÉPARATION D'OXYDE D'YTTRIUM TRANSPARENT PAR FRITTAGE PAR PRESSE À CHAUD
(KO) 열간 가압 소결에 의한 투광성 이트리아의 제조 방법
Abstract:
(EN) The present invention relates to a method for preparing a transparent yttria member through hot-press sintering. The present invention provides a method for preparing transparent yttria by hot-press sintering a molded body of a raw material powder containing yttria using a hot-press sintering apparatus, wherein the hot-press sintering is performed while a spacer is interposed between the molded body and a pressing surface for the molded body, the spacer being formed of a heat-resistant metal, which is not substantially reactive with the molded body at a sintering temperature. According to the present invention, transparent yttria that is highly densified to reach a light transmittance of 80% can be prepared by a single hot-press sintering process.
(FR) La présente invention concerne un procédé de préparation d'un élément en oxyde d'yttrium transparent par frittage par presse à chaud. La présente invention concerne un procédé de préparation d'oxyde d'yttrium transparent par frittage par presse à chaud d'un corps moulé d'une poudre de matière première contenant de l'oxyde d'yttrium à l'aide d'un appareil de frittage par presse à chaud, le frittage par presse à chaud étant effectué tandis qu'un élément d'espacement est interposé entre le corps moulé et une surface de pressage pour le corps moulé, l'élément d'espacement étant formé d'un métal résistant à la chaleur, qui n'est sensiblement pas réactif avec le corps moulé à une température de frittage. Selon la présente invention, l'oxyde d'yttrium transparent qui est hautement densifié pour atteindre une transmittance de la lumière de 80 % peut être préparé en un seul processus de frittage par presse à chaud.
(KO) 본 발명은 열간 가압 소결에 의한 투광성 이트리아 부재의 제조 방법에 관한 것이다. 본 발명은 이트리아를 포함하는 원료 분말의 성형체를 열간 가압 소결 장치로 열간 가압 소결하여 투광성 이트리아를 제조하는 방법에 있어서, 상기 열간 가압 소결은 상기 성형체와 상기 성형체의 가압면 사이에 스페이서를 개재한 상태로 수행되고, 상기 스페이서는 소결 온도에서 상기 성형체와 실질적으로 비반응성인 내열 금속으로 형성되는 것을 특징으로 하는 이트리아의 제조 방법을 제공한다. 본 발명에 따르면, 열간 가압 소결 단일 공정으로 광 투과율 80%에 이르는 고치밀화 된 투광성 이트리아의 제조가 가능하게 된다.
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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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, 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: Korean (KO)
Filing Language: Korean (KO)