摘要
利用放电等离子烧结(SPS)技术成功制备了ZrB2-SiC超高温陶瓷复合材料,研究了颗粒间放电生成的ZrO2对复合材料中ZrB2生长机制的影响。结果表明,在ZrB2-SiC体系中,ZrB2(1010)面会优先与ZrO2(101)面结合,ZrB2(1010)面的正常生长受到抑制,(0001)面则成为ZrB2优先生长面。基于此研究结果,可以为ZrB2-SiC复合材料微结构设计和材料性能的改进提供依据。
ZrB2-SiC hypertemperature ceramic composites were prepared successfully using a spark plasma sintering （SPS） technique, and the effect of ZrO2 formed by sparking between grain particles on the grain growth mechanism of ZrB2 was studied. The results show that, for ZrB2-SiC, （1010） plane of ZrB2 is bound to （101） plane of ZrO2 to suppress the growth of （1010） plane, and （0001） plane is a priority grown plane of ZrO2. The research provides a theoretic basis for improving the microstructure and mechanical properties of ZrB2-SiC composites.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2008年第8期940-943,共4页
Acta Armamentarii
