Effect of the Applied Voltages on the Corrosion–Wear Behavior of Thermal Spray Al Coating
Shun-Yi Jian,
Hung-Hua Sheu,
Jun-Kai Chang,
Chih-Hung Chen,
Yuan-Huan Hong,
Ming-Hsun Lin,
Hung-Bin Lee
Affiliations
Shun-Yi Jian
Department of Material Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan
Hung-Hua Sheu
Department of Chemical & Materials Engineering, Chung Cheng Institute of Technology, National Defense University, Dasi, Taoyuan 335, Taiwan
Jun-Kai Chang
Casting Technology Section, Metals Processing Research and Development Department, Metal Industries Research and Development Centre, Kaohsiung 811, Taiwan
Chih-Hung Chen
Department of Chemical and Materials Engineering, Lunghwa University of Science and Technology, Taoyuan 334, Taiwan
Yuan-Huan Hong
Department of Optoelectronics and Materials Technology and Center of Excellence for Ocean Engineering, National Taiwan Ocean University, Keelung 202, Taiwan
Ming-Hsun Lin
Environmental Protection Bureau Kaohsiung City Government, Kaohsiung 833, Taiwan
Hung-Bin Lee
Department of Optoelectronics and Materials Technology and Center of Excellence for Ocean Engineering, National Taiwan Ocean University, Keelung 202, Taiwan
In this work, an Al coating prepared using the arc spray process was carried out with a corrosion–wear analysis by a block-on-ring system. The interaction of corrosion and wear of coatings in seawater was also investigated. The effect of different corrosion potentials on the corrosion and wear of the coating was discussed, and the structure and corrosion products of the coating were observed by SEM. The results of dynamic potential polarization curves and friction coefficient measurements were used to clarify the corrosion and wear behavior of aluminum coatings in seawater. After quantitative analysis of a corrosion and wear test, it was found that with the increase in polarization potential, the total weight loss of corrosion and wear (Wtotal) of the aluminum coating increased significantly. This means that the corrosion–wear interaction accounts for most of the weight loss of the coating.