摘要
以硼粉和石墨粉为原料,采用放电等离子烧结技术(SPS)反应烧结碳化硼陶瓷,使碳化硼的合成和致密化一次完成。研究结果表明:碳化硼的SPS反应烧结过程可以分为5个阶段,碳化硼合成的起始温度在1100℃左右,致密化的起始温度则在1650℃左右;在1800℃烧结得到了致密度为98.2%的碳化硼陶瓷,其维氏硬度和杨氏模量分别达到48.8 GPa和264.5 GPa。
Using boron and graphite powder as raw materials,boron carbide ceramic was prepared and densificated in one step by spark plasma sintering(SPS).The results indicate that the sintering behavior of boron carbide by SPS could be classified to five stages.The starting temperature of synthesis was at 1100 ℃,and that of the speedy densification was around 1650 ℃.The obtained materials which was fabricated at 1800 ℃ reached a high relative density of 98.2%,and the Vickers hardness and Young s modulus reached 48.8 ...
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2009年第1期165-169,共5页
Journal of Synthetic Crystals
基金
国家自然科学基金资助项目(No.50772082)
关键词
碳化硼
放电等离子烧结
力学性能
boron carbide
spark plasma sintering
mechanical properties
