摘要
采用干压成型制备BeO陶瓷,通过分析BeO陶瓷的坯体密度和断口形貌,研究加压压力、加压速度、保压时间、粘结剂等工艺参数对BeO陶瓷成型工艺的影响。研究结果表明:干压成型制备BeO陶瓷过程中,加压压力、加压速度、保压时间、粘结剂等工艺参数可以明显影响BeO陶瓷的坯体密度;为得到致密度高、热力学性能优异的BeO陶瓷,必须对加压压力、加压速度、保压时间、粘结剂等工艺参数进行优化;当压力为120MPa,保压60s,加入质量分数为1%的PVA作为成型剂压制时能得到致密度较高的BeO陶瓷坯体。
BeO ceramics were prepared by the dry-pressing molding. The influences of compression pressure, speed, holding time and forming agent on the BeO ceramics molding were investigated through analysis of the body density, microstructure of the BeO ceramics. The results show that the compression pressure, speed, holding time and forming agent can obviously improve the body density of the BeO ceramic, thereby enhance the thermodynamic properties of the BeO ceramics. Keeping the pressure at 120 MPa for 60 s and adding 1% （mass fraction） of the PVA as forming agent, dense BeO ceramics can be prepared.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第1期135-138,共4页
Journal of Central South University:Science and Technology
基金
国家民口配套项目(MKPT-03-182)
关键词
BeO陶瓷
干压成型
坯体密度
粘结剂
BeO ceramics
dry-pressing molding
body density
forming agent
