Alternative TitleAccurate Characterization for Pore Properties of Aluminum-based Metallic Class Coating and the Influence of Pores on Corrosion Behavior of Coating
王晓明1; 朱胜1; 杨柏俊2; 陈永星1
Source Publication稀有金属材料与工程
Other AbstractThe aluminum-based metallic glass coating on ZM5 surface with good corrosion resistance was prepared from Al86Ni6Y4.5Co2La1.5 amorphous powder by self-developed low-temperature supersonic spray system.The types and causes of pores in the coating were analyzed,the porosity of the coating was determined by X-ray three-dimensional imaging method,the pore geometry features were characterized,and the influence of pores on the corrosion behavior of the coating was clarified.The results show that the coating consists mainly of four types of conventional porosity defects,which are macro-type,layer-type,microsphere-type and microscopic-type.The porosities are substantially less than 1% and have little change along the thickness direction.The pores are nearly spherical,and their average sizes are less than 10 μm,mostly about 5 μm;the coatings of different porosities show a wide range of self passivation interval,self corrosion potentials are closer,and there is a positive correlation between the corrosion current densities and porosities.Individual special pores at the border with the characteristics of large-size and through-type are the fundamental cause of corrosion failure of the coating.
Keyword铝基金属玻璃涂层 低温超音速喷涂 X射线三维成像法 孔隙 腐蚀行为
Indexed ByCSCD
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Cited Times:3[CSCD]   [CSCD Record]
Document Type期刊论文
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GB/T 7714
王晓明,朱胜,杨柏俊,等. Al基金属玻璃涂层孔隙特性的精确表征及对其腐蚀行为的影响规律[J]. 稀有金属材料与工程,2017,46.0(012):3779-3784.
APA 王晓明,朱胜,杨柏俊,&陈永星.(2017).Al基金属玻璃涂层孔隙特性的精确表征及对其腐蚀行为的影响规律.稀有金属材料与工程,46.0(012),3779-3784.
MLA 王晓明,et al."Al基金属玻璃涂层孔隙特性的精确表征及对其腐蚀行为的影响规律".稀有金属材料与工程 46.0.012(2017):3779-3784.
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