激光熔覆Ni/Ti-Al<sub>2</sub>O<sub>3</sub>涂层组织研究

张群森; 陈永香; 董丰波; 刁磊; 周维; 高鸿鹏; 雷宇江; 李崇桂

doi:doi:10.14128/j.cnki.al.20173704.497

应用激光, 2017, 37 (4): 497, 网络出版: 2017-10-12

激光熔覆Ni/Ti-Al₂O₃涂层组织研究

Microstructure of Laser Clad Ni/Ti-Al₂O₃ Coatings

论文大纲

张群森 ^*陈永香董丰波刁磊周维高鸿鹏雷宇江李崇桂

作者单位

上海工程技术大学材料工程学院, 上海 201620

Ni/Ti涂层显微组织激光熔覆钛合金 Ni/Ti coating microstructure laser cladding titanium alloy

摘要

采用激光熔覆技术在钛合金基体表面制备了Ni/Ti涂层和Ni/Ti-Al2O3涂层。利用扫描电镜、能谱分析仪和X射线衍射仪对涂层的显微组织、成分和相组成进行了分析。结果表明, 涂层与基体的结合区域有明显的光亮线, 涂层与基体呈现出良好的冶金结合,涂层的显微组织由白色光亮带组织和黑色组织构成, Ni/Ti涂层中主要的物相有NiTi2和NiTi两相, Ni/Ti-Al2O3涂层主要的物相则为NiTi2、Ti和Al2O3相。

Abstract

Ni/Ti coating and Ni/Ti-Al2O3 coating were fabricated on titanium alloy substrate by laser cladding. The microstructure and phase composition of the coatings were investigated by XRD, SEM, EDAX, respectively. The microhardness and wear resistance of the coatings were also researched and analyzed used by microhardness tester and multifunction tribometer, respectively. The results show that the microstructure of the coating consisted of bright zone and black zone. The binding region between coating and substrate has obvious bright line, which exhibit substantially good metallurgical bonding. The main phase of Ni/Ti coating was NiTi2 and NiTi, while Ni/Ti-Al2O3 coating was NiTi2, Ti and Al2O3.

参考文献

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张群森, 陈永香, 董丰波, 刁磊, 周维, 高鸿鹏, 雷宇江, 李崇桂. 激光熔覆Ni/Ti-Al₂O₃涂层组织研究[J]. 应用激光, 2017, 37(4): 497. Zhang Qunsen, Chen Yongxiang, Dong Fengbo, Diao Lei, Zhou Wei, Gao Hongpeng, Lei Yujiang, Li Chonggui. Microstructure of Laser Clad Ni/Ti-Al₂O₃ Coatings[J]. APPLIED LASER, 2017, 37(4): 497.

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