基本信息:
- 专利标题： 以硅微粉为原料原位制备碳化硼-碳化硅复合陶瓷的方法
- 专利标题（英）：In-situ preparation method for composite boron carbide-silicon carbide ceramic by adopting silica powder as raw material
- 申请号：CN201910256056.6 申请日：2019-04-01
- 公开(公告)号：CN109824366A 公开(公告)日：2019-05-31
- 发明人： 邢鹏飞 , 刘坤 , 高帅波 , 都兴红 , 闫姝 , 冯忠宝 , 庄艳歆 , 仇知
- 申请人： 东北大学
- 申请人地址： 辽宁省沈阳市和平区文化路3号巷11号
- 专利权人： 东北大学
- 当前专利权人： 东北大学
- 当前专利权人地址： 辽宁省沈阳市和平区文化路3号巷11号
- 代理机构： 沈阳东大知识产权代理有限公司
- 代理人： 梁焱
- 主分类号： C04B35/563
- IPC分类号： C04B35/563 ; C04B35/622 ; C04B35/645
The invention discloses an in-situ preparation method for a composite boron carbide-silicon carbide ceramic by adopting silica powder as a raw material. The method comprises the following steps that (1) a carbonaceous reducing agent is ground into powder with the particle size less than or equal to 60 microns; (2) boron carbide powder, the powder and micro silica powder are uniformly mixed, waterand an adhesive are added, and the mixture is pressed into square blocks by a ball pressing machine; (3) the square blocks are dried at the temperature of 50-120 DEG C and prepared into green bodies;(4) the green bodies are sintered by a vacuum hot pressing sintering furnace, and the composite boron carbide-silicon carbide ceramic material is prepared. The method is reasonable in matching ratio,significantly improves uniformity of silicon carbide distribution, and improves combining conditions of the interfaces of boron carbide and silicon carbide, so that the prepared composite boron carbide-silicon carbide ceramic prepared through sintering has better performance.