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公开(公告)号：KR100538360B1
公开(公告)日：2005-12-22
申请号：KR1020030056998
申请日：2003-08-18
Applicant: 한국과학기술연구원
IPC: C30B29/16
Abstract: 본 발명은 흑색 큐빅상 지르코니아 단결정의 제조방법에 관한 것으로서, 더욱 상세하게는 상 안정화제로 산화칼슘(CaO) 또는 산화이트륨(Y
2 O
3 )
등이 첨가된 무색 또는 유색의 큐빅상 지르코니아 단결정을 탄소 환원분위기에서 진공 고온로에서 열처리하여 인조 보석으로서의 흑색 큐빅상 지르코니아 단결정을 제조하는 방법에 관한 것이다.-
公开(公告)号：KR1020050019336A
公开(公告)日：2005-03-03
申请号：KR1020030056998
申请日：2003-08-18
Applicant: 한국과학기술연구원
IPC: C30B29/16
Abstract: PURPOSE: A method for synthesizing of black cubic ZrO2 single crystals is provided to produce massively articles of superior quality by performing heat treatment in a carbon reduction atmosphere. CONSTITUTION: A heat treatment process is performed in the carbon reduction atmosphere. Any one of graphite, carbon, coal, charcoal, briquet and coal tar is used as a carbon supply source for making up the carbon reduction atmosphere. The carbon supply source is used within 1 to 50 wt.% on the basis of the weight of ZrO2 single crystal. A high temperature vacuum chamber keeps the vacuum degree of 10¬-1¯10¬-5 torr and the temperature of 950 to 1,500 °C. The heat treatment is lasted for 0.5 to 50 hours.
Abstract translation: 目的：提供一种合成黑色立方ZrO2单晶的方法，通过在碳还原气氛中进行热处理，大量生产出优质的物品。 构成：在碳还原气氛中进行热处理。 石墨，碳，煤，炭，煤焦油和煤焦油中的任何一种都被用作碳供应源，用于弥补碳还原气氛。 基于ZrO2单晶的重量，碳供应源的使用量在1至50重量％之内。 高温真空室的真空度保持在10〜1〜10 -5乇，温度为950〜1500℃。 热处理持续0.5〜50小时。
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公开(公告)号：KR1019920005467B1
公开(公告)日：1992-07-04
申请号：KR1019900006327
申请日：1990-05-04
Applicant: 한국과학기술연구원
Abstract: A glass ceramic is composed of glass frit powder (1) and 1-10 wt.% - cordierite fine powder (2) with the average particle size of 0.01- 0.2 μm. The glass frit powder (1) contains 45-55 wt.% SiO2, 15- 25 wt.% Al2O3, 15-25 wt.% MgO, 0.4-0.5 wt.% CaO, 0.9-1.5 wt.% B2O3 and 1.4-1.5 wt.% P2O3. A weight ratio of coarse glass frit powder to fine glass frit powder is 1:1.5-2.5. The above powder is molded by pressure molding method or doctor blade molding method, and it is heated to the temperature range of 800-1000 deg.C at a rate of 180-360 deg.C/hr, maintained for 20-120 min, and cooled at a rate of 120-240 deg.C/hr.
Abstract translation: 玻璃陶瓷由玻璃粉末（1）和1-10重量％的平均粒度为0.01〜0.2μm的堇青石细粉末（2）组成。 玻璃料粉末（1）含有45-55重量％的SiO 2，15-25重量％的Al 2 O 3，15-25重量％的MgO，0.4-0.5重量％的CaO，0.9-1.5重量％的B 2 O 3和1.4〜 1.5重量％的P2O3。 粗玻璃料粉末与细玻璃料粉末的重量比为1:1.5-2.5。 上述粉末通过加压成型法或刮刀成型法成型，以180〜360℃/ hr的速度加热到800〜1000℃的温度范围，保持20〜120分钟， 并以120-240℃/ hr的速率冷却。
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