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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 Xiaoming1; Zhu Sheng1; Yang Baijun2; Chen Yongxing1
Corresponding AuthorWang Xiaoming(1043933832@qq.com)
2017-12-01
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume46Issue:12Pages:3779-3784
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 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.
Keywordaluminum-based metallic class coating low-temperature supersonic spray XRT pores corrosion behavior
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000425203200032
PublisherNORTHWEST INST NONFERROUS METAL RESEARCH
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/127402
Collection中国科学院金属研究所
Corresponding AuthorWang Xiaoming
Affiliation1.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
Recommended Citation
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.
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