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Method for preparing silicon nitride ceramic from low-grade diatomite
The invention relates to a method for preparing silicon nitride ceramic from low-grade diatomite, and belongs to the technical field of silicon nitride ceramic preparation. According to the method for preparing the silicon nitride ceramic from the low-grade diatomite, the diatomite is purified firstly, then silicon nitride powder is prepared, then a silicon nitride green body is prepared, and finally the silicon nitride ceramic is prepared. According to the method for preparing the silicon nitride ceramic from the low-grade diatomite, the low-grade diatomite is used for replacing silicon powder to serve as a raw material for preparing the silicon nitride ceramic, the cost is low, the process is simple, the prepared silicon nitride ceramic is excellent in performance, the density average value is 3.26 g/cm<3>, the bending strength average value is 537 MPa, and the compression strength average value is 2139 MPa.
本发明涉及一种低品位硅藻土制备氮化硅陶瓷的方法，属于氮化硅陶瓷制备技术领域。本发明的低品位硅藻土制备氮化硅陶瓷的方法，先将硅藻土纯化，然后制备氮化硅粉末，再制备氮化硅坯体，最后制备氮化硅陶瓷。本发明的低品位硅藻土制备氮化硅陶瓷的方法用低品位硅藻土代替硅粉做制备氮化硅陶瓷的原材料，不仅成本低，工艺简单，且制备的氮化硅陶瓷性能优异，密度平均值为3.26g/cm3，弯曲强度平均值为537MPa，压缩强度平均值为2139MPa。
Method for preparing silicon nitride ceramic from low-grade diatomite
The invention relates to a method for preparing silicon nitride ceramic from low-grade diatomite, and belongs to the technical field of silicon nitride ceramic preparation. According to the method for preparing the silicon nitride ceramic from the low-grade diatomite, the diatomite is purified firstly, then silicon nitride powder is prepared, then a silicon nitride green body is prepared, and finally the silicon nitride ceramic is prepared. According to the method for preparing the silicon nitride ceramic from the low-grade diatomite, the low-grade diatomite is used for replacing silicon powder to serve as a raw material for preparing the silicon nitride ceramic, the cost is low, the process is simple, the prepared silicon nitride ceramic is excellent in performance, the density average value is 3.26 g/cm<3>, the bending strength average value is 537 MPa, and the compression strength average value is 2139 MPa.
本发明涉及一种低品位硅藻土制备氮化硅陶瓷的方法，属于氮化硅陶瓷制备技术领域。本发明的低品位硅藻土制备氮化硅陶瓷的方法，先将硅藻土纯化，然后制备氮化硅粉末，再制备氮化硅坯体，最后制备氮化硅陶瓷。本发明的低品位硅藻土制备氮化硅陶瓷的方法用低品位硅藻土代替硅粉做制备氮化硅陶瓷的原材料，不仅成本低，工艺简单，且制备的氮化硅陶瓷性能优异，密度平均值为3.26g/cm3，弯曲强度平均值为537MPa，压缩强度平均值为2139MPa。
Method for preparing silicon nitride ceramic from low-grade diatomite
一种低品位硅藻土制备氮化硅陶瓷的方法
JIANG YONGJIU (author) / ZHAO YING (author) / YU GONG (author) / HUANG XU (author) / WANG YU (author) / WANG YIPENG (author) / WANG JITAO (author) / WANG JIBO (author)
2021-07-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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