反应等离子喷涂TiCN-Mo涂层的组织与性能

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Abstract Three types of TiCN-Mo coatings with different Mo contents were deposited on steel substrate surface by reactive plasma spraying. The phase composition and microstructures of as-sprayed coatings were investigated by XRD, SEM and EDS. A Vickers microhardness test was used to measure the microhardness and indentation fractures of the coatings. In addition, a statistics method of Weibull distribution was used to examine the microhardness scattering. The results show that all coatings consist of TiC_0.7N_0.3, TiN, Mo, minor Ti₂O and molybdenum oxides. Metal Mo in white color is evenly distributed around TiCN to form a dense microstructure, which presents an alternately stacked characteristic. The Weibull distribution of the microhardness of three coatings is dominated by apparent scattering. Compared to the monolithic TiCN coatings, the as-sprayed coating with 10% Mo displays a relatively low scattering characteristic of Vickers microhardness and a dense microstructure as well as high indention toughness and strength.

Key words： TiCN-Mo coatings reactive plasma spraying vickers microhardness Weibull distribution

Received: 12 September 2017 Published: 12 July 2019

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TG174.44

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	Articles by authors
	NI Pan
	NIU Jinghui
	LIU Hongbing
	ZHANG Haifeng
	MENG Hailong
	JIANG Dehua
	GONG Yue
	SHAO Lin

Cite this article:

NI Pan,NIU Jinghui,LIU Hongbing, et al. Microstructure and properties of TiCN-Mo coatings prepared by reactive plasma spraying[J]. Materials Science and Engineering of Powder Metallurgy, 2018, 23(2): 192-198.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2018/V23/I2/192

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