Influence of C and Al Addition on Microstructure and Mechanical Properties of Ultrafine TiCN-Based Cermets

Abstract:

In this paper, the TiCN-based cermets were fabricated with ultrafine TiCN, metal binders and carbide additives. Different content of C and Al were separately added to eliminate the oxygen contamination. The composition of the mixture was TiCN-10Mo-20WC- 20Ni-xC/Al. Effect of the C and Al addition on microstructure and mechanical properties was investigated. Results indicated that cermets with carbon addition had higher relative density and more homogenous microstructure while the Al addition had the opposite effect. Proper addition of carbon improved the mechanical properties.

• Periodical: Key Engineering Materials (Volumes 368-372)
• Pages: 1110-1112
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.368-372.1110
• Online since: February 2008
• Authors: Xian Juan Ni, Long Hao Qi
• Keywords: Carbon Addition, Microstructure, Ti(c,n)-based Cermet

References

[1] P. Ettmayer, H. Kolaska, W. Lengauer, et al.: Int. J. Refract. Met. H. Vol. 13(1995), p.343.

[2] Y. A. Sun and S. Kang: J. Am. Ceram. Soc. Vol. 83(2000), p.1489.

[3] S. Zhang: Mat. Sci. Eng. A-Struct. Vol. 163 (1993), p.141.

[4] F. Qi and S. Kang: Mat. Sci. Eng. A-Struct. Vol. 251 (1998), pp.176-285.

[5] Y. Zheng, W.H. Xiong, W.J. Liu. et al.: Ceram. Int. Vol. 31(2005), p.165.

[6] J. Jung and S. Kang: Acta Mater. Vol. 52(2004), p.1379. Fig. 6 Bending strength of the cermets Fig. 7 Vickers hardness of the cermets.