Fast Densification of B4C Ceramics with Al2O3 as a Sintering Aid by Spark Plasma Sintering
The densification behavior and mechanical properties of B4C by SPS at 1900℃ for 2 min with additions of Al203 up to 10 wt.% were investigated. When the additional of 10 wt.%, the relative density was 99% and the hardness went to 33GPa. Sinterability was greatly improved bythe addition of a small amount of Al203, and the SPS technology with high hearing rate is particularly attractive for prepare of poorly sinterable materials. The improvement was attributed to the enhanced mobility of elements through the Al2O3 near the melting temperature. As a result of this improvement in the density, mechanical properties, such as hardness, fracture toughness, increased remarkably.
Boron carbide Hardness Fast densification
Fan Zhang Zhengyi Fu Jinyong Zhang Hao Wang Weimin Wang Yucheng Wang Jing Shi
State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Tec College of Applied Physics, Wuhan University, Wuhan 430072, China
国际会议
10th International Symposium on Eco-Materials Processing and Design(第10届国际生态材料加工与设计研讨会)
西安
英文
395-398
2009-01-13（万方平台首次上网日期，不代表论文的发表时间）