Chin. Phys. B ›› 2013, Vol. 22 ›› Issue (1): 18102-018102.doi: 10.1088/1674-1056/22/1/018102

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

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

李文生a, 张杰a, 董洪锋a, 褚克a, 王顺才b, 刘毅a, 李亚明a   

  1. a State Key Lab of Advanced Non-Ferrous Materials, Lanzhou University of Technology, Lanzhou 730050, China;
    b National Centre for Advanced Tribology, Engineering Sciences, University of Southampton, Southampton, SO17 1BJ, United Kingdom
  • 收稿日期:2012-05-11 修回日期:2012-06-18 出版日期:2012-12-01 发布日期:2012-12-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 51165021) and the Science Fund for Distinguished Young Scholars of Gansu Province, China (Grant No. 111RJDA0103).

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

Li Wen-Sheng (李文生)a, Zhang Jie (张杰)a, Dong Hong-Feng (董洪锋)a, Chu Ke (褚克)a, Wang Shun-Cai (王顺才)b, Liu Yi (刘毅)a, Li Ya-Ming (李亚明)a   

  1. a State Key Lab of Advanced Non-Ferrous Materials, Lanzhou University of Technology, Lanzhou 730050, China;
    b National Centre for Advanced Tribology, Engineering Sciences, University of Southampton, Southampton, SO17 1BJ, United Kingdom
  • Received:2012-05-11 Revised:2012-06-18 Online:2012-12-01 Published:2012-12-01
  • Contact: Li Wen-Sheng E-mail:wensheng-li@sohu.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 51165021) and the Science Fund for Distinguished Young Scholars of Gansu Province, China (Grant No. 111RJDA0103).

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 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.

关键词: thermodynamics, kinetics, diamond composites, diamond graphitization

Abstract: 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 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.

Key words: thermodynamics, kinetics, diamond composites, diamond graphitization

中图分类号:  (Diamond/nanocarbon composites)

  • 81.05.uj