碳添加量对TiC基金属陶瓷组织与性能的影响

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Abstract Using TiC powder, Mo powder, WC powder, and Ni powder as raw materials, 0, 1%, 2%, and 3% (mass fraction) of C powder were respectively added to prepare TiC-WC-Ni-Mo cermets, and the effects of C additive amount on the microstructure and properties of TiC based cermets were studied. The results show that the TiC-based cermets shows a typical black-core and grey-rim structure the main component of the core is TiC, and the rim is composed of Ti, W, Mo and other elements. With the increase of C additive amount, the grain size of the cermets decreases, but the porosity increases, the rim becomes thinner, the hardness of the material decreases, and the bending strength increases first and then decreases. When the C additive amount is 2%, the bending strength of the material reaches the maximum value of 1 061 MPa, and the hardness is 14.29 GPa.

Key words： C additive amount TiC-based cermets bending strength microstructure hardness

Received: 12 January 2018 Published: 19 July 2019

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	YAO Songsong
	CHENG Huichao
	FAN Jinglian
	LIU Tao

Cite this article:

YAO Songsong,CHENG Huichao,FAN Jinglian, et al. Effects of carbon additive amount on the microstructure and properties of TiC-based cermets[J]. Materials Science and Engineering of Powder Metallurgy, 2018, 23(6): 569-574.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2018/V23/I6/569

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