Wear and Corrosion Resistance of Plasma Electrolytic Oxidation Coatings on 6061 Al Alloy in Electrolytes with Aluminate and Phosphate

doi:10.3390/ma14144037

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Wear and Corrosion Resistance of Plasma Electrolytic Oxidation Coatings on 6061 Al Alloy in Electrolytes with Aluminate and Phosphate
	Peng, Zhenjun 1,2; Xu, Hui 1; Liu, Siqin 2; Qi, Yuming 2; Liang, Jun 2
刊名	MATERIALS
	2021-07
卷号	14 期号:14
关键词	aluminum alloy plasma electrolytic oxidation phosphate aluminate wear corrosion
DOI	10.3390/ma14144037
英文摘要	Phosphate and aluminate electrolytes were used to prepare plasma electrolytic oxidation (PEO) coatings on 6061 aluminum alloy. The surface and cross-section microstructure, element distribution, and phase composition of the PEO coatings were characterized by SEM, EDS, XPS, and XRD. The friction and wear properties were evaluated by pin-on-disk sliding tests under dry conditions. The corrosion resistance of PEO coatings was investigated by electrochemical corrosion and salt spray tests in acidic environments. It was found that the PEO coatings prepared from both phosphate and aluminate electrolytes were mainly composed of alpha-Al2O3 and gamma-Al2O3. The results demonstrate that a bi-layer coating is formed in the phosphate electrolyte, and a single-layered dense alumina coating with a hardness of 1300 HV is realizable in the aluminate electrolyte. The aluminate PEO coating had a lower wear rate than the phosphate PEO coating. However, the phosphate PEO coating showed a better corrosion resistance in acidic environment, which is mainly attributed to the presence of an amorphous P element at the substrate/coating interface.
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
语种	英语
出版者	MDPI
WOS记录号	WOS:000677183200001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148914]
专题	石油化工学院
作者单位	1.Lanzhou Univ Technol, Coll Petrochem Engn, Lanzhou 730050, Peoples R China; 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Peng, Zhenjun,Xu, Hui,Liu, Siqin,et al. Wear and Corrosion Resistance of Plasma Electrolytic Oxidation Coatings on 6061 Al Alloy in Electrolytes with Aluminate and Phosphate[J]. MATERIALS,2021,14(14).
APA	Peng, Zhenjun,Xu, Hui,Liu, Siqin,Qi, Yuming,&Liang, Jun.(2021).Wear and Corrosion Resistance of Plasma Electrolytic Oxidation Coatings on 6061 Al Alloy in Electrolytes with Aluminate and Phosphate.MATERIALS,14(14).
MLA	Peng, Zhenjun,et al."Wear and Corrosion Resistance of Plasma Electrolytic Oxidation Coatings on 6061 Al Alloy in Electrolytes with Aluminate and Phosphate".MATERIALS 14.14(2021).