激光原位合成NiTi基复合涂层的微结构特征与耐蚀性能

doi:10.11896/cldb.19010026

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Abstract The NiTi-based intermetallic compounds composite coating was produced on Ti-6Al-4V surface by laser in-situ synthesis. To investigate the microstructure of coating, the composition of oxide formed on the surface of the coating and the effect of the corrosion resistance of the coating after soaking. The results showed that the main components of the composite coating were NiTi, NiTi₂ and a small amount of M₃C₂. Al₂O₃ and TiO oxides were formed on the surface of the coating after soaking for 3 d. TiO₂ was formed on the surface of the coating after soaking for 5 d. The polarization curves and EIS were measured in 3.5wt% NaCl solution. It was found that the corrosion resistance of the coating and the TC4 alloy was increased with the increase of immersion time, and the composite coating soaked for 5 d had the best corrosion resistance.

Key words： intermetallic compound NiTi alloy laser in-situ synthesis

Published: 25 January 2020 Online: 2020-01-03

CLC number:

TN249

About author: Quanju Shireceived the master’s degree in enginee-ring from Tianjin Polytechnic University in March 2019, mainly participating in laser additive manufacturing of new materials research;Zhenjie Gu is a lecturer of Tianjin Polytechnic University with a master's degree in engineering. He is mainly engaged in metal material surface modification and laser additive manufacturing technology;Shengfeng Zhouis professor and doctoral supervisor of Tianjin Polytechnic University. Mainly engaged in laser surface engineering, laser material processing, laser additive manufacturing, electrodeposition nanocomposite research. He has published more than 20 articles in important journals and applied for 15 invention patents.

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	SHI Quanju
	GU Zhenjie
	ZHOU Shengfeng

Cite this article:

SHI Quanju,GU Zhenjie,ZHOU Shengfeng. Microstructure and Corrosion Resistance of Laser In-situ Synthesized NiTi-based Composite Coating[J]. Materials Reports, 2020, 34(2): 2110-2116.

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http://www.mater-rep.com/EN/10.11896/cldb.19010026 OR http://www.mater-rep.com/EN/Y2020/V34/I2/2110

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