Corrosion of high-velocity oxy-fuel (HVOF) sprayed iron-based amorphous metallic coatings for marine pump in sodium chloride solutions

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	Corrosion of high-velocity oxy-fuel (HVOF) sprayed iron-based amorphous metallic coatings for marine pump in sodium chloride solutions
	Y. Wang; Y. G. Zheng; W. Ke; W. H. Sun; J. Q. Wang
	2012
发表期刊	Materials and Corrosion-Werkstoffe Und Korrosion
ISSN	0947-5117
卷号	63 期号:8 页码:685-694
摘要	FeCrMoMnWBCSi amorphous metallic coatings (AMCs) were deposited onto the 304 stainless steel (base material of pump impeller operated in sand-containing seawater) by high-velocity oxygen-fuel (HVOF) thermal spray. The preparation, microstructural characteristics, and static corrosion behavior of the AMCs were presented. The microstructure and corrosion behavior of the AMCs were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), differential scanning calorimetry (DSC), and electrochemical methods. Melt-spun ribbon and 304 stainless steel were also used for comparison purposes. The results indicated that the AMCs can spontaneously passivate with a wide passive region, and much higher ability to withstand pitting corrosion than that of the 304 stainless steel for the high pitting resistance equivalent value. The passive current density of the AMCs was at least two orders of magnitude higher than the counterpart ribbon, which showed a slightly decreased uniform corrosion resistance of the AMCs due to the incompact structure and porosity. The corrosion resistance of the AMCs increased with the coating thickness and decreased with the concentration of NaCl solution. A stable passivation ability held in the AMCs endowed them suitably used in marine environments.
部门归属	[wang, y.; zheng, y. g.; ke, w.] chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china. [wang, y.] ne petr univ, dept mat sci & engn, daqing 163318, peoples r china. [sun, w. h.; wang, j. q.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china.;zheng, yg (reprint author), chinese acad sci, state key lab corros & protect, inst met res, 62 wencui rd, shenyang 110016, peoples r china.;ygzheng@imr.ac.cn; jqwang@imr.ac.cn
关键词	Amorphous Structures Eis Metallic Coatings Passivity Polarization Stainless Steel Erosion-corrosion Stainless-steel Behavior Alloys Resistance Fe-8cr-13p-7c Performance Glasses
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60326
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Wang,Y. G. Zheng,W. Ke,et al. Corrosion of high-velocity oxy-fuel (HVOF) sprayed iron-based amorphous metallic coatings for marine pump in sodium chloride solutions[J]. Materials and Corrosion-Werkstoffe Und Korrosion,2012,63(8):685-694.
APA	Y. Wang,Y. G. Zheng,W. Ke,W. H. Sun,&J. Q. Wang.(2012).Corrosion of high-velocity oxy-fuel (HVOF) sprayed iron-based amorphous metallic coatings for marine pump in sodium chloride solutions.Materials and Corrosion-Werkstoffe Und Korrosion,63(8),685-694.
MLA	Y. Wang,et al."Corrosion of high-velocity oxy-fuel (HVOF) sprayed iron-based amorphous metallic coatings for marine pump in sodium chloride solutions".Materials and Corrosion-Werkstoffe Und Korrosion 63.8(2012):685-694.