Accurate Characterization for Pore Properties of Aluminum-based Metallic Class Coating and the Influence of Pores on Corrosion Behavior of Coating

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	Accurate Characterization for Pore Properties of Aluminum-based Metallic Class Coating and the Influence of Pores on Corrosion Behavior of Coating
	Wang Xiaoming 1; Zhu Sheng 1; Yang Baijun 2; Chen Yongxing 1
刊名	RARE METAL MATERIALS AND ENGINEERING
	2017-12-01
卷号	46 期号:12 页码:3779-3784
关键词	aluminum-based metallic class coating low-temperature supersonic spray XRT pores corrosion behavior
ISSN号	1002-185X
通讯作者	Wang Xiaoming(1043933832@qq.com)
英文摘要	The 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 mu m, mostly about 5 mu m; 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.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
WOS记录号	WOS:000425203200032
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/127401]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang Xiaoming
作者单位	1.Acad Armored Force Engn, Natl Key Lab Remfg, Beijing 100072, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wang Xiaoming,Zhu Sheng,Yang Baijun,et al. Accurate Characterization for Pore Properties of Aluminum-based Metallic Class Coating and the Influence of Pores on Corrosion Behavior of Coating[J]. RARE METAL MATERIALS AND ENGINEERING,2017,46(12):3779-3784.
APA	Wang Xiaoming,Zhu Sheng,Yang Baijun,&Chen Yongxing.(2017).Accurate Characterization for Pore Properties of Aluminum-based Metallic Class Coating and the Influence of Pores on Corrosion Behavior of Coating.RARE METAL MATERIALS AND ENGINEERING,46(12),3779-3784.
MLA	Wang Xiaoming,et al."Accurate Characterization for Pore Properties of Aluminum-based Metallic Class Coating and the Influence of Pores on Corrosion Behavior of Coating".RARE METAL MATERIALS AND ENGINEERING 46.12(2017):3779-3784.