Properties of jet-plated Ni coating on Ti alloy (Ti6Al4V) with laser cleaning pretreatment

Wang, Xiao, Xu, Mingyang, Wang, Zhanwen, Shen, Lida, Qiu, Mingbo, Tian, Zongjun, Ahsan, Muhammad Naveed and Wang, Changjiang (2019) Properties of jet-plated Ni coating on Ti alloy (Ti6Al4V) with laser cleaning pretreatment. Metals, 9 (2). 248 1-12. ISSN 2075-4701

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Abstract

The surface mechanical properties of the Selective Laser Melting (SLM) formed Ti6Al4V samples were improved by adopting a novel laser cleaning pretreatment process combined with a jet electrodeposition process. This paper aimed to investigate the effects of different laser powers on the morphologies and adhesions of the nickel coatings. The advantages of the laser cleaning process are no grinding, no contact, high efficiency and environmental protection. The morphologies, adhesion, wear resistance, and hardness of the coatings were characterized. The results indicate that when the laser energy density reached 20% (4 J/cm2), the contaminations on the substrate and the oxide layer were removed and the crystalline grain of the coating was 15.3 nm. The shallow pits generated by laser burning increased the adhesion of the coatings. In addition, when the laser energy density increased to 6 J/cm2, a yellow oxide layer was produced on the surface of the cleaned titanium alloy. Moreover, the wear resistance of the titanium alloy after the nickel plating was improved. The wear volume was only 0.046 mm3, and the hardness increased to 1967.6 N/mm2.

Item Type: Article
Keywords: laser cleaning; titanium alloy; jet electrodeposition; friction properties
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Research Centres and Groups: Dynamics, Control and Vehicle Research Group
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TA Engineering (General). Civil engineering (General) > TA0401 Materials of engineering and construction. Mechanics of materials
Depositing User: Chang Wang
Date Deposited: 01 Mar 2019 11:54
Last Modified: 01 Mar 2019 11:54
URI: http://srodev.sussex.ac.uk/id/eprint/82219

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