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Method for preparing infrared transparent ceramic through pressureless rapid sintering
A method for preparing infrared transparent ceramic through pressureless rapid sintering comprises the steps that firstly, nano powder is pressed to form a ceramic biscuit; the biscuit is put into a muffle furnace and pre-sintered to eliminate internal stress; then the biscuit is put into a spark plasma sintering furnace; spark plasma rapid sintering is started without applying external pressure; and after sintering is finished, the biscuit is cooled and taken out, and a sample is annealed to obtain compact nanocrystal infrared transparent ceramic. The density of the obtained ceramic sample is higher than 95%, the crystalline grain size is smaller than 250 nm, and the ceramic sample has good optical performance and mechanical performance.
一种无压快速烧结制备红外透明陶瓷的方法，首先将纳米粉体压制成型为陶瓷素坯，将素坯放入马弗炉中预烧消除内应力，然后将素坯放入放电等离子烧结炉，不施加外加压力开始放电等离子快速烧结，烧结结束后降温取出，将样品进行退火处理，即制得致密纳米晶粒的红外透明陶瓷，所得陶瓷样品的致密度高于95％，晶粒尺寸小于250nm，具有较好的光学性能和力学性能。
Method for preparing infrared transparent ceramic through pressureless rapid sintering
A method for preparing infrared transparent ceramic through pressureless rapid sintering comprises the steps that firstly, nano powder is pressed to form a ceramic biscuit; the biscuit is put into a muffle furnace and pre-sintered to eliminate internal stress; then the biscuit is put into a spark plasma sintering furnace; spark plasma rapid sintering is started without applying external pressure; and after sintering is finished, the biscuit is cooled and taken out, and a sample is annealed to obtain compact nanocrystal infrared transparent ceramic. The density of the obtained ceramic sample is higher than 95%, the crystalline grain size is smaller than 250 nm, and the ceramic sample has good optical performance and mechanical performance.
一种无压快速烧结制备红外透明陶瓷的方法，首先将纳米粉体压制成型为陶瓷素坯，将素坯放入马弗炉中预烧消除内应力，然后将素坯放入放电等离子烧结炉，不施加外加压力开始放电等离子快速烧结，烧结结束后降温取出，将样品进行退火处理，即制得致密纳米晶粒的红外透明陶瓷，所得陶瓷样品的致密度高于95％，晶粒尺寸小于250nm，具有较好的光学性能和力学性能。
Method for preparing infrared transparent ceramic through pressureless rapid sintering
一种无压快速烧结制备红外透明陶瓷的方法
FAN JINTAI (author) / SHEN ZONGYUN (author) / QIAN KAICHEN (author) / ZHANG LONG (author) / FENG TAO (author) / JIANG BENXUE (author) / FENG MINGHUI (author) / ZHANG LULU (author) / FAN XIANGLONG (author) / CHEN BAIJIAN (author)
2021-08-03
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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