Thermodynamic and kinetic study on interfacial reaction and diamond graphitization of Cu Fe-based diamond composite

被引：0
|
作者：
李文生 [1 ]
张杰 [1 ]
董洪锋 [1 ]
禇克 [1 ]
王顺才 [2 ]
刘毅 [1 ]
李亚明 [1 ]
机构：
[1] State Key Laboratory of Advanced Non-Ferrous Materials, Lanzhou University of Technology
[2] National Centre for Advanced Tribology, Engineering Sciences, University of Southampton
来源：
Chinese Physics B | 2013年 / 22卷 / 01期
基金：
中国国家自然科学基金;
关键词：
thermodynamics; kinetics; diamond composites; diamond graphitization;
D O I：
暂无
中图分类号：
O613.71 [碳C];
学科分类号：
摘要：
Cu-Fe based diamond composites used for saw-blade segments are directly fabricated by vacuum and pressure- assisted sintering. The carbide forming elements Cr and Ti are added to improve interfacial bonding between diamond and the Cu-Fe matrix. The interfacial reactions between diamond/graphite and Cr or Ti, and diamond graphitization are investigated by thermodynamics/kinetics analyses and experimental methods. The results show that interfacial reactions and graphitization of diamond can automatically proceed thermodynamically. The Cr3C2 , Cr7C3 , Cr23C6 , and TiC are formed at the interfaces of composites by reactions between diamond and Cr or Ti; diamond graphitization does not occur because of the kinetic difficulty at 1093 K under the pressure of 13 MPa.
引用
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页码：524 / 530
页数：7
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