Microstructure and corrosion properties of Cu coatings deposited via laser-assisted low-pressure cold spray

被引：1
作者：
Wu, Li-juan [1 ,2 ,3 ]
Lin, Zhong-wei [1 ,2 ,3 ]
Luo, Zhun [1 ,2 ,3 ]
Li, Bo [1 ,2 ,3 ]
Liu, Jiang [4 ]
Zhang, Qun-li [1 ,2 ,3 ]
Yao, Jian-hua [1 ,2 ,3 ]
机构：
[1] Zhejiang Univ Technol, Coll Mech Engn, Hangzhou 310023, Peoples R China
[2] Zhejiang Univ Technol, Inst Laser Adv Mfg, Hangzhou 310023, Peoples R China
[3] Zhejiang Univ Technol, Collaborat Innovat Ctr High end Laser Mfg Equipmen, Hangzhou 310023, Peoples R China
[4] Zhejiang Reci Laser Technol Co Ltd, Taizhou 317500, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2024年 / 34卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Cu coating; laser irradiation; cold spray; microstructure; corrosion properties; MECHANICAL-PROPERTIES; COPPER; RESISTANCE; BEHAVIOR; PROTECTION; PARTICLE;
D O I：
10.1016/S1003-6326(23)66421-0
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Cu coatings were prepared via the laser -assisted low-pressure cold spray (LPCS) method to study the effect of laser irradiation on microstructure and corrosion behaviors of the coatings. The results reveal that the laser -assisted LPCS-Cu coatings are denser and have better coating-substrate interfacial bonding as compared to LPCS-Cu coating. Laser irradiation improves the overall plastic deformation of deposited particles, resulting in uniform grain refinement of Cu particles. Therefore, the laser -assisted LPCS-Cu coatings show more uniform microstructure and smaller grain size. The results of electrochemical tests demonstrated that laser -assisted LPCS-Cu coatings have higher corrosion potential, lower corrosion current and corrosion rate than the LPCS-Cu coating in 3.5 wt.% NaCl solution. The main reason is that laser irradiation improves the coating density and intimate bonding between particles, and a continuous and dense corrosion product film composed of CuCl and Cu2O is formed on the surface of the laser -assisted LPCS-Cu coating to block the erosion of the corrosive solution.
引用
收藏
页码：604 / 617
页数：14
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