TC4钛合金表面激光原位反应制备TiN涂层及性能研究

刘熊; 邱长军; 刘豪; 胡良斌; 陈勇

doi:10.16080/j.issn1671–833x.2018.23/24.052

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TC4钛合金表面激光原位反应制备TiN涂层及性能研究

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- TC4钛合金表面激光原位反应制备TiN涂层及性能研究
- 航空制造技术 2018年61卷第23/24期
- 作者机构：
  
  南华大学机械工程学院,衡阳,421001
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671–833x.2018.23/24.052
  中图分类号：
- 纸质出版：2018
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刘熊，邱长军，刘豪，胡良斌，陈勇. TC4钛合金表面激光原位反应制备TiN涂层及性能研究[J]. 航空制造技术, 2018, 61(23/24): 52-58. LIU Xiong, QIU Changjun, LIU Hao, HU Liangbin, CHEN Yong. In-Situ Synthesized TiN Coating by Laser Nitriding on TC4 Titanium Alloy Surface. Aeronautical Manufacturing Technology, 2018, 61(23/24): 52-58.

LIU Xiong, QIU Changjun, LIU Hao, et al. In-Situ Synthesized TiN Coating by Laser Nitriding on TC4 Titanium Alloy Surface[J]. Aeronautical Manufacturing Technology, 2018, 61(23/24).
刘熊，邱长军，刘豪，胡良斌，陈勇. TC4钛合金表面激光原位反应制备TiN涂层及性能研究[J]. 航空制造技术, 2018, 61(23/24): 52-58. LIU Xiong, QIU Changjun, LIU Hao, HU Liangbin, CHEN Yong. In-Situ Synthesized TiN Coating by Laser Nitriding on TC4 Titanium Alloy Surface. Aeronautical Manufacturing Technology, 2018, 61(23/24): 52-58. DOI： 10.16080/j.issn1671–833x.2018.23/24.052.

LIU Xiong, QIU Changjun, LIU Hao, et al. In-Situ Synthesized TiN Coating by Laser Nitriding on TC4 Titanium Alloy Surface[J]. Aeronautical Manufacturing Technology, 2018, 61(23/24). DOI： 10.16080/j.issn1671–833x.2018.23/24.052.

摘要

利用激光原位反应技术在TC4 钛合金表面制备了无裂纹、组织均匀致密的TiN 涂层，并分析了激光氮化层的显微组织、成分和物相，测试了涂层横截面显微硬度、涂层耐磨性能及抗SiO2 颗粒高速冲蚀的能力。结果表明：在适当的激光参数下制备的氮化钛涂层与TC4 基体之间呈现良好的冶金结合，其界面结合强度为240~270MPa；涂层主要为硬质TiN 相，涂层硬度高达1550HV0.1，约为基材的4.5 倍；涂层磨损失重量是TC4 钛合金的14.7%；在60º冲蚀角度下，基材的冲蚀质量损失为涂层的2 倍。

Abstract

TiN coatings with no crack and uniform compact structure were fabricated on the TC4 titanium alloy by laser micro-fusion in-situ synthesized technology. The micro-structure

chemical composition and phase of the coating were analyzed

in addition

the micro hardness of the coating

bond strength between coating and titanium alloy matrix

and the wear resistance of coating were tested. The resistance of erosion of SiO2 particles with high-speed was also tested. It was found that the bonding strength of TiN coating and TC4 titanium alloy was 240–270MPa due to good metallurgical combination between them. The micro hardness of the coatings was found to reach 1550HV0.1

around 4.5 times of the matrix which is ascribed to the formation of TiN with high hardness. Moreover

the loss weight of coating wear was 14.7% of TC4 titanium alloy and the mass loss of the substrate was twice that of the coating at an erosion angle of 60°.

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