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Evolution of Microstructure and Corrosion Behavior of Plasma-Sprayed Ca2SiO4 Coatings with Exposure Periods in Simulated Seawater
Shao, F; Xiao, Y; Zhuang, Y; Ni, JX; Zhao, HY; Tao, SY
2020
Source PublicationJOURNAL OF THERMAL SPRAY TECHNOLOGY
ISSN1059-9630
Issue2020-01-02Pages:285
SubtypeArticle
AbstractCa2SiO4 coatings with and without metallic bonding layer (NiCr) have been prepared by atmospheric plasma spraying. Microstructure and corrosion behavior of the coatings with various exposure periods in simulated seawater were investigated by means of scanning electron microscopy, energy dispersive spectrometry, potentiodynamic polarization and electrochemical impedance spectroscopy. The results revealed that the after immersion, a layer of urchin-like aragonite (CaCO3) was formed on the surface and a dense silica-rich layer was found between CaCO3 and Ca2SiO4 layer. Besides, self-sealing behavior was observed in the Ca2SiO4 layers. Compared with the immersed coatings, as-sprayed coatings exhibited the highest corrosion current densities, the lowest polarization resistance and charge transfer resistance. The presence of the metallic bonding layer slightly decreased the corrosion resistance of Ca2SiO4 coatings. The plasma-sprayed Ca2SiO4 coatings have a potential use in marine corrosive environments.
DOI10.1007/s11666-019-00972-z
WOS KeywordMETALLIC BONDING LAYER ; MECHANICAL-PROPERTIES ; CERAMIC COATINGS ; CARBON-STEEL ; ANTICORROSION ; RESISTANCE ; MAGNESIUM ; SURFACE ; BASE ; WEAR
Language英语
WOS Research AreaMaterials Science
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28394
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Shao, F,Xiao, Y,Zhuang, Y,et al. Evolution of Microstructure and Corrosion Behavior of Plasma-Sprayed Ca2SiO4 Coatings with Exposure Periods in Simulated Seawater[J]. JOURNAL OF THERMAL SPRAY TECHNOLOGY,2020(2020-01-02):285.
APA Shao, F,Xiao, Y,Zhuang, Y,Ni, JX,Zhao, HY,&Tao, SY.(2020).Evolution of Microstructure and Corrosion Behavior of Plasma-Sprayed Ca2SiO4 Coatings with Exposure Periods in Simulated Seawater.JOURNAL OF THERMAL SPRAY TECHNOLOGY(2020-01-02),285.
MLA Shao, F,et al."Evolution of Microstructure and Corrosion Behavior of Plasma-Sprayed Ca2SiO4 Coatings with Exposure Periods in Simulated Seawater".JOURNAL OF THERMAL SPRAY TECHNOLOGY .2020-01-02(2020):285.
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