Effect of Process Conditions on Microstructure and Corrosion Resistance of Cold-Sprayed Ti Coatings
Wang, Hong-Ren1,2,3; Hou, Bao-Rong1; Wang, Jun3; Wang, Qi3; Li, Wen-Ya4
2008-12-01
发表期刊JOURNAL OF THERMAL SPRAY TECHNOLOGY
ISSN1059-9630
卷号17期号:5-6页码:736-741
文章类型Article
摘要Ti and Ti alloys can be applied to steels as a protective coating in view of its excellent resistance to corrosive environment. Cold spraying, as a new coating technique, has potential advantages in fabrication of Ti coating in comparison with conventional thermal spraying techniques. In this study, Ti coatings were prepared on carbon steel substrates by cold spraying via controlling the process conditions. The microstructure of coatings was observed by SEM. The porosity of coatings was estimated by image analysis and the bond strength was tested for comparison of the process conditions. Potentiodynamic polarization and open-circuit potential (OCP) measurements were performed to understand the corrosion behavior of the coatings. The SEM examination shows that the coatings become more compact with the increases of pressure and temperature of driving gas. The potentiodynamic polarization curves indicate that the coating which has lower porosity has lower corrosion current. The polarization and OCP measurement reveal that cold-sprayed Ti coating can provide favorable protection to carbon steel substrate. The polishing treatment of coating surface polishes the rough outer layer including the small pores as well as decreases the actual surface area of the coating, leading to the considerable improvement of corrosion resistance.; Ti and Ti alloys can be applied to steels as a protective coating in view of its excellent resistance to corrosive environment. Cold spraying, as a new coating technique, has potential advantages in fabrication of Ti coating in comparison with conventional thermal spraying techniques. In this study, Ti coatings were prepared on carbon steel substrates by cold spraying via controlling the process conditions. The microstructure of coatings was observed by SEM. The porosity of coatings was estimated by image analysis and the bond strength was tested for comparison of the process conditions. Potentiodynamic polarization and open-circuit potential (OCP) measurements were performed to understand the corrosion behavior of the coatings. The SEM examination shows that the coatings become more compact with the increases of pressure and temperature of driving gas. The potentiodynamic polarization curves indicate that the coating which has lower porosity has lower corrosion current. The polarization and OCP measurement reveal that cold-sprayed Ti coating can provide favorable protection to carbon steel substrate. The polishing treatment of coating surface polishes the rough outer layer including the small pores as well as decreases the actual surface area of the coating, leading to the considerable improvement of corrosion resistance.
关键词Cold Spray Corrosion Resistance Microstructure Process Conditions Ti coaTing
学科领域Materials Science, Coatings & Films
DOI10.1007/s11666-008-9256-3
URL查看原文
收录类别SCI ; ISTP
语种英语
WOS记录号WOS:000261411700022
引用统计
被引频次:40[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/5148
专题海洋环境腐蚀与生物污损重点实验室
作者单位1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Luoyang Ship Mat Res Inst LSMRI, State Key Lab Marine Corros & Protect, Qingdao 266071, Shandong, Peoples R China
4.NW Polytech Univ, Shaanxi Key Lab Frict Welding Technol, Sch Mat Sci & Engn, Xian 710072, Peoples R China
第一作者单位中国科学院海洋研究所
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GB/T 7714
Wang, Hong-Ren,Hou, Bao-Rong,Wang, Jun,et al. Effect of Process Conditions on Microstructure and Corrosion Resistance of Cold-Sprayed Ti Coatings[J]. JOURNAL OF THERMAL SPRAY TECHNOLOGY,2008,17(5-6):736-741.
APA Wang, Hong-Ren,Hou, Bao-Rong,Wang, Jun,Wang, Qi,&Li, Wen-Ya.(2008).Effect of Process Conditions on Microstructure and Corrosion Resistance of Cold-Sprayed Ti Coatings.JOURNAL OF THERMAL SPRAY TECHNOLOGY,17(5-6),736-741.
MLA Wang, Hong-Ren,et al."Effect of Process Conditions on Microstructure and Corrosion Resistance of Cold-Sprayed Ti Coatings".JOURNAL OF THERMAL SPRAY TECHNOLOGY 17.5-6(2008):736-741.
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