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High-temperature and high-pressure preparation method of high-strength transparent silicon nitride ceramic
The invention discloses a high-temperature and high-pressure preparation method of high-strength transparent silicon nitride ceramic, and belongs to the technical field of preparation of transparent silicon nitride ceramic materials. A mixture of micron alpha-Si3N4 and nano beta-Si3N4 is used as a raw material; the high-strength transparent silicon nitride ceramic is prepared through the technological processes of raw material mixing, briquetting, assembling, high-temperature and high-pressure synthesis and cooling pressure relief. The method is simple in technological process, and does not need the addition of sintering aids; the preparation process of the transparent ceramic material is simplified; the preparation period of the material is shortened; the sintering time of the material isshortened; the morphology and performance of silicon nitride (beta-Si3N4) are adjusted through temperature and pressure, so that the high-strength transparent silicon nitride (beta-Si3N4) ceramic isprepared.
本发明的高强度透明氮化硅陶瓷的高温高压制备方法属于透明氮化硅陶瓷材料制备的技术领域，以微米α‑SiN和纳米β‑SiN混合物为原料，经过原料混合、压块、组装、高温高压合成、冷却卸压的工艺过程制得β‑SiN透明陶瓷材料。本发明工艺流程简单，不需要添加烧结助剂；简化了透明陶瓷材料的制备流程，缩短了材料制备周期和烧结时间；通过温度和压力来调节氮化硅(β‑SiN)的形貌和性能，制备出了高强度的透明氮化硅(β‑SiN)陶瓷。
High-temperature and high-pressure preparation method of high-strength transparent silicon nitride ceramic
The invention discloses a high-temperature and high-pressure preparation method of high-strength transparent silicon nitride ceramic, and belongs to the technical field of preparation of transparent silicon nitride ceramic materials. A mixture of micron alpha-Si3N4 and nano beta-Si3N4 is used as a raw material; the high-strength transparent silicon nitride ceramic is prepared through the technological processes of raw material mixing, briquetting, assembling, high-temperature and high-pressure synthesis and cooling pressure relief. The method is simple in technological process, and does not need the addition of sintering aids; the preparation process of the transparent ceramic material is simplified; the preparation period of the material is shortened; the sintering time of the material isshortened; the morphology and performance of silicon nitride (beta-Si3N4) are adjusted through temperature and pressure, so that the high-strength transparent silicon nitride (beta-Si3N4) ceramic isprepared.
本发明的高强度透明氮化硅陶瓷的高温高压制备方法属于透明氮化硅陶瓷材料制备的技术领域，以微米α‑SiN和纳米β‑SiN混合物为原料，经过原料混合、压块、组装、高温高压合成、冷却卸压的工艺过程制得β‑SiN透明陶瓷材料。本发明工艺流程简单，不需要添加烧结助剂；简化了透明陶瓷材料的制备流程，缩短了材料制备周期和烧结时间；通过温度和压力来调节氮化硅(β‑SiN)的形貌和性能，制备出了高强度的透明氮化硅(β‑SiN)陶瓷。
High-temperature and high-pressure preparation method of high-strength transparent silicon nitride ceramic
高强度透明氮化硅陶瓷的高温高压制备方法
MA SHUAILING (author) / CUI TIAN (author) / TAO QIANG (author) / ZHU PINWEN (author) / BAO KUO (author)
2020-08-18
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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