Effect of V(2)O(5)Additive on Micro-Arc Oxidation Coatings Fabricated on Magnesium Alloys with Different Loading Voltages

doi:10.3390/met10091146

	Effect of V(2)O(5)Additive on Micro-Arc Oxidation Coatings Fabricated on Magnesium Alloys with Different Loading Voltages
	Wang, Zhanying; Ma, Ying; Wang, Yushun
刊名	METALS
	2020-09-01
卷号	10 期号:9
关键词	magnesium alloy micro-arc oxidation vanadium pentoxide corrosion resistance
DOI	10.3390/met10091146
英文摘要	Effect of V(2)O(5)additive in silicate-containing electrolyte on AZ91D magnesium alloys treated by micro-arc oxidation (MAO) technology under different loading voltages was investigated. The results showed that vanadium was well up-taken into the coating chemically. Moreover, a new phase of MgV(2)O(4)with spinel structure was obtained in MAO coatings due to V(2)O(5)added into the electrolyte. The MgV(2)O(4)phase was responsible for the coatings exhibiting brown color and also was beneficial to improving the anti-corrosion property. In spotting tests, the corrosion resistances of coatings prepared under the high voltage are about 6-9 times higher than those of the low voltage because of the thicker coatings of the former. In potentiodynamic polarization tests, the coatings' corrosion resistances were improved with the addition of V2O5, which was more significant under the low voltage than that under the high voltage. When the concentration of V(2)O(5)was 0.2 g/L, the corrosion current density of the coating was the lowest, which means that the coating's corrosion resistance under the low voltage is the best. Hence, it is necessary to carry out targeted design of the coating's microstructure according to the different applications.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	MDPI
WOS记录号	WOS:000580346800001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/155110]
专题	材料科学与工程学院
作者单位	Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Zhanying,Ma, Ying,Wang, Yushun. Effect of V(2)O(5)Additive on Micro-Arc Oxidation Coatings Fabricated on Magnesium Alloys with Different Loading Voltages[J]. METALS,2020,10(9).
APA	Wang, Zhanying,Ma, Ying,&Wang, Yushun.(2020).Effect of V(2)O(5)Additive on Micro-Arc Oxidation Coatings Fabricated on Magnesium Alloys with Different Loading Voltages.METALS,10(9).
MLA	Wang, Zhanying,et al."Effect of V(2)O(5)Additive on Micro-Arc Oxidation Coatings Fabricated on Magnesium Alloys with Different Loading Voltages".METALS 10.9(2020).