A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Rapid sintering preparation method of infrared transparent ceramic
The invention relates to a rapid sintering preparation method of infrared transparent ceramic. The method comprises the following steps: firstly, pressing nano powder to form a ceramic biscuit, putting the biscuit into a low-temperature area of a double-temperature-area muffle furnace, heating to a preset temperature, preserving heat, eliminating internal stress caused by a sample in a forming process, and reducing moisture absorbed by the sample in a preparation process; and then pushing the sample to a high-temperature area, carrying out heat-preservation sintering, and cooling along with the furnace after sintering is finished, so as to prepare the high-density nano-crystalline-grain ceramic. The relative density of the obtained ceramic sample is 95%-100%, the grain size is smaller than 250 nm, and the ceramic sample has good optical performance and mechanical performance.
一种红外透明陶瓷的快速烧结制备方法，首先将纳米粉体压制成型为陶瓷素坯，将素坯放入双温区马弗炉中的低温区加热至预设温度保温，消除样品在成型过程中造成的内应力，并降低样品在制备过程中吸收的水分，然后将样品推送至高温区，进行保温烧结，烧结结束后随炉降温，制得高致密度纳米晶粒的陶瓷。所得陶瓷样品的相对致密度为95％～100％，晶粒尺寸小于250nm，具有较好的光学性能和机械性能。
Rapid sintering preparation method of infrared transparent ceramic
The invention relates to a rapid sintering preparation method of infrared transparent ceramic. The method comprises the following steps: firstly, pressing nano powder to form a ceramic biscuit, putting the biscuit into a low-temperature area of a double-temperature-area muffle furnace, heating to a preset temperature, preserving heat, eliminating internal stress caused by a sample in a forming process, and reducing moisture absorbed by the sample in a preparation process; and then pushing the sample to a high-temperature area, carrying out heat-preservation sintering, and cooling along with the furnace after sintering is finished, so as to prepare the high-density nano-crystalline-grain ceramic. The relative density of the obtained ceramic sample is 95%-100%, the grain size is smaller than 250 nm, and the ceramic sample has good optical performance and mechanical performance.
一种红外透明陶瓷的快速烧结制备方法，首先将纳米粉体压制成型为陶瓷素坯，将素坯放入双温区马弗炉中的低温区加热至预设温度保温，消除样品在成型过程中造成的内应力，并降低样品在制备过程中吸收的水分，然后将样品推送至高温区，进行保温烧结，烧结结束后随炉降温，制得高致密度纳米晶粒的陶瓷。所得陶瓷样品的相对致密度为95％～100％，晶粒尺寸小于250nm，具有较好的光学性能和机械性能。
Rapid sintering preparation method of infrared transparent ceramic
一种红外透明陶瓷的快速烧结制备方法
FAN JINTAI (author) / SHEN ZONGYUN (author) / QIAN KAICHEN (author) / ZHANG LONG (author) / XIE JUNXI (author) / FENG TAO (author) / JIANG BENXUE (author) / FENG MINGHUI (author) / CHEN BAIJIAN (author) / ZHANG LULU (author)
2021-07-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Method for preparing infrared transparent ceramic through pressureless rapid sintering
| European Patent Office | 2021
Atmosphere-adjusted AlON transparent ceramic sintering preparation method
| European Patent Office | 2024
| European Patent Office | 2021
| European Patent Office | 2024