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Aluminum oxide ceramic with high thermal shock resistance and preparation method thereof
The invention discloses an aluminum oxide ceramic with high thermal shock resistance and a preparation method thereof. The aluminum oxide ceramic with high thermal shock resistance is prepared from the following components in percentage by mass: 95-98% of micron-sized alpha-Al2O3 powder, 0.5-1% of SiO2, 0.5-1% of CaCO3, 0.5-1% of talcum powder, 0.5-1% of adhesive and 0-0.5% of rare earth oxide orrare earth fluoride. Micron-scale aluminum oxide powder is selected, a rare earth oxide or fluoride is added, talcum powder, silicon dioxide and calcium carbonate are selected as sintering aids, polyvinyl alcohol is used as a binder, the aluminum oxide ceramic product can be prepared through three steps of mixing, pressing and sintering, the process is simple and easy to operate, sintering moldingcan be performed at a relatively low sintering temperature (1580-1600 DEG C), and the prepared aluminum oxide has high thermal shock resistance. The preparation cost of aluminum oxide can be saved, and the service life of aluminum oxide in a high-temperature environment (higher than or equal to 800 DEG C) is prolonged.
本发明公开了一种高抗热震氧化铝陶瓷及其制备方法；所述高抗热震氧化铝陶瓷，按质量百分比计算，包括95～98%微米级α‑Al2O3粉、0.5～1%SiO2、0.5～1%CaCO3、0.5～1%滑石粉、0.5～1%粘结剂、0～0.5%稀土氧化物或稀土氟化物。本发明选择微米级的氧化铝粉，添加稀土氧化物或氟化物，选择滑石粉、二氧化硅、碳酸钙为助烧剂，聚乙烯醇为粘结剂，经过混合－压制－烧结三大步骤即可制得氧化铝陶瓷制品，工艺简单，易操作，且能在较低烧结温度（1580‑1600℃）下烧结成型，且制备所得的氧化铝具有高抗热震性能。本发明可节约制备氧化铝成本且使其在高温环境（≥800℃）下的使用寿命增加。
Aluminum oxide ceramic with high thermal shock resistance and preparation method thereof
The invention discloses an aluminum oxide ceramic with high thermal shock resistance and a preparation method thereof. The aluminum oxide ceramic with high thermal shock resistance is prepared from the following components in percentage by mass: 95-98% of micron-sized alpha-Al2O3 powder, 0.5-1% of SiO2, 0.5-1% of CaCO3, 0.5-1% of talcum powder, 0.5-1% of adhesive and 0-0.5% of rare earth oxide orrare earth fluoride. Micron-scale aluminum oxide powder is selected, a rare earth oxide or fluoride is added, talcum powder, silicon dioxide and calcium carbonate are selected as sintering aids, polyvinyl alcohol is used as a binder, the aluminum oxide ceramic product can be prepared through three steps of mixing, pressing and sintering, the process is simple and easy to operate, sintering moldingcan be performed at a relatively low sintering temperature (1580-1600 DEG C), and the prepared aluminum oxide has high thermal shock resistance. The preparation cost of aluminum oxide can be saved, and the service life of aluminum oxide in a high-temperature environment (higher than or equal to 800 DEG C) is prolonged.
本发明公开了一种高抗热震氧化铝陶瓷及其制备方法；所述高抗热震氧化铝陶瓷，按质量百分比计算，包括95～98%微米级α‑Al2O3粉、0.5～1%SiO2、0.5～1%CaCO3、0.5～1%滑石粉、0.5～1%粘结剂、0～0.5%稀土氧化物或稀土氟化物。本发明选择微米级的氧化铝粉，添加稀土氧化物或氟化物，选择滑石粉、二氧化硅、碳酸钙为助烧剂，聚乙烯醇为粘结剂，经过混合－压制－烧结三大步骤即可制得氧化铝陶瓷制品，工艺简单，易操作，且能在较低烧结温度（1580‑1600℃）下烧结成型，且制备所得的氧化铝具有高抗热震性能。本发明可节约制备氧化铝成本且使其在高温环境（≥800℃）下的使用寿命增加。
Aluminum oxide ceramic with high thermal shock resistance and preparation method thereof
一种高抗热震氧化铝陶瓷及其制备方法
DI YULI (author) / LUO QIAN (author) / HUANG HAIYAN (author) / JIAO YU (author) / JIN BIQIANG (author)
2020-10-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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