反应等离子喷涂TiCN-Mo涂层的组织与性能

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摘要利用反应等离子喷涂技术在钢基体上沉积了3种不同Mo含量的TiCN-Mo金属基陶瓷涂层。通过XRD、SEM及EDS对涂层显微结构进行分析,通过显微硬度计测量涂层的硬度和压痕韧性,并对显微硬度进行Weibull分布统计。结果表明：涂层由TiC_0.7N_0.3,TiN,金属Mo相,少量Ti₂O及钼的氧化物组成;Mo以白色条带状均匀分布在TiCN周围,交替叠加,形成紧密的显微结构;三种涂层显微硬度均服从Weibull分布,具有一定分散性;与单一TiCN涂层相比,当Mo质量分数为10%时,制备的涂层显微硬度具有较小的分散性,结构致密,具有较高的压痕韧性和强度。

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	倪攀
	牛景辉
	刘红兵
	张海峰
	孟海龙
	江德华
	龚月
	邵林

关键词 ： TiCN-Mo涂层, 反应等离子喷涂, 显微硬度, Weibull分布

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

收稿日期: 2017-09-12 出版日期: 2019-07-12

ZTFLH:

TG174.44

基金资助:中石油华北油田公司科技项目(2016-HB-G09)

通讯作者: 倪攀,副教授,硕士。电话：022-29000705;E-mail: ni0055@sina,com

引用本文:

倪攀, 牛景辉, 刘红兵, 张海峰, 孟海龙, 江德华, 龚月, 邵林. 反应等离子喷涂TiCN-Mo涂层的组织与性能[J]. 粉末冶金材料科学与工程, 2018, 23(2): 192-198.
NI Pan, NIU Jinghui, LIU Hongbing, ZHANG Haifeng, MENG Hailong, JIANG Dehua, GONG Yue, SHAO Lin. Microstructure and properties of TiCN-Mo coatings prepared by reactive plasma spraying. Materials Science and Engineering of Powder Metallurgy, 2018, 23(2): 192-198.

链接本文:

http://pmbjb.csu.edu.cn/CN/ 或 http://pmbjb.csu.edu.cn/CN/Y2018/V23/I2/192

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