Effect of Process Conditions on Microstructure and Corrosion Resistance of Cold-Sprayed Ti Coatings

doi:10.1007/s11666-008-9256-3

	Effect of Process Conditions on Microstructure and Corrosion Resistance of Cold-Sprayed Ti Coatings
	Wang, Hong-Ren 1,2,3; Hou, Bao-Rong 1; Wang, Jun 3; Wang, Qi 3; Li, Wen-Ya 4
	2008-12-01
发表期刊	JOURNAL OF THERMAL SPRAY TECHNOLOGY
ISSN	1059-9630
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
DOI	10.1007/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
推荐引用方式 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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