Gelcasting of BeO

摘要：

　　Aqueous gel-casting of beryllia using polyelectrolyte NH4PAA as a dispersant has been investigated.The effects of the dispersant amount,pH values on the surface properties of BeO powders in aqueous solvent were studied and high solids loading BeO suspension (45 vol.%) was developed.A premix solution containing 15-20 wt.% of AM monomer can provide enough mechanical strength for the green body obtained from 45 vol.% BeO suspension.SEM photography indicates that BeO ceramics with homogeneous microstructure can be fabricated.The thermal conductivity of sintered green body is 182.1±10 W/(m.K).Gelcasting is a suitable process to form BeO ceramic parts.

关键词： Gelcasting BeO Dispersion Suspension Thermal Conductivity

作者: Wei Shi

作者单位: School of Aeronautics and Astronautics, Central South University, Changsha 410083, China

会议类型: 国际会议

会议名称: the 2012 International Conference on Frontiers of Mechanical Engineering and Materials Engineering (机械工程与材料工程国际会议())

会议地点: 香港

会议语种:英文

页码: 992-1000

在线出版日期: 2012-07-27（万方平台首次上网日期，不代表论文的发表时间）