Synthesis and characterization of novel Ti₃SiC₂-cBN composites

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• 作者：Zhengyang Li^a ; Aiguo Zhou^a ; ^{zhouag@hpu.edu.cn" class="auth_mail} ; Liang Li^a ; ¹ ; Libo Wang^a ; Meihua Hu^a ; Shangsheng Li^a ; Surojit Gupta^b
• 关键词：Ti3SiC2 ; Cubic boron nitride ; Composites ; High pressure high temperature
• 刊名：Diamond and Related Materials
• 出版年：March, 2014
• 年：2014
• 卷：43
• 期：Complete
• 页码：29-33
• 全文大小：1330 K

文摘

In this paper, synthesis of novel super hard and high performance composites of titanium silicon carbide-cubic boron nitride (Ti₃SiC₂-cBN) was evaluated at three different conditions: (a) high pressure synthesis at ~ 4.5 GPa, (b) hot pressing at ~ 35 MPa, and (c) sintering under ambient pressure (0.1 MPa) in a tube furnace. From the analysis of experimental results, the authors report that the novel Ti₃SiC₂-cBN composites can be successfully fabricated at 1050 掳C under a pressure of ~ 4.5 GPa from the mixture of Ti₃SiC₂ powders and cBN powders. The subsequent analysis of the microstructure and hardness studies indicates that these composites are promising candidates for super hard materials.