Synthesis of WC-10wt.%Co Nanocrystalline Powders with Grain Growth Inhibitor by MTP


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To improve the fracture strength and wear resistance of WC-Co cemented carbide, various technologies have been developed related producing the nano crystalline. There have been extensive studied conducted to retard grain growth during liquid phase sintering. However, when this inhibitor is added by simple mixing, a micro-pores forms during sintering In this study, WC-Co nanocrystalline powders with grain growth inhibitor in the site were prepared by MTP (Mechano-Thermic carburizing Process) to minimize this formation of micro pores and to retard grain growth effectively during sintering. In addition, then the phase and grain size of WC-Co nanocrystalline powders were evaluated according to the condition of MTP.



Materials Science Forum (Volumes 534-536)

Edited by:

Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim




D. K. Park et al., "Synthesis of WC-10wt.%Co Nanocrystalline Powders with Grain Growth Inhibitor by MTP", Materials Science Forum, Vols. 534-536, pp. 1237-1240, 2007

Online since:

January 2007




[1] G.H. Ha, S.H. Hong and B.K. Kimm: J. of Korea Powd. Met. Inst., Vol. 10, No. 6, (2003) p.365.

[2] Seung I. Cha, Soon H. Hong: J. of metastable and Nanocrystalline Mat. Vol. 15-26(2003) p.319.

[3] F.L. Ahang, C.Y. Wang, M. Zhu: Scripta Materialia 49(2003) p.1123.

[4] M. Sherif El-Eskandarany, Amir A. Mahday, H.A. Ahmed. A.H. Ahmer: Journal of Alloy and Compounds 312 (2000) p.315.

[5] Jianfei Sun, Faming Zhang, Jun Shen: Materials Letters 57(2003) p.3140.

[6] N.J. Calos, J.S. Forrester and G.B. Shaffer: J. Solid State Chem., 158(2001), p.268.

[7] D.H. Kwon, I.S. Ahn, G.H. Ha, B.K. Kim and Y.Y. Kim: Journal of Korea Powder Metallurgy Institute, Vol. 9, No. 3, (2002) p.167.

[8] T. Yamamoto, Y. Ikuhara and T. Sakuma: Science and Tech. of Advance Materials 1(2000) p.97.

[9] A. Egami, M. Ehira, M. Machida: Proceeding of 13th international Plansee Semina Vol. 3 (1993) p.639.

[10] H.J. Scussel : Friction and Wear of Cemented Carbides, ASM Handbook, Vol. 18, ASM Int., (1992), p.796.