Formation and corrosion behavior of Fe-based amorphous metallic coatings by HVOF thermal spraying

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	Formation and corrosion behavior of Fe-based amorphous metallic coatings by HVOF thermal spraying
	Z. Zhou; L. Wang; F. C. Wang; H. F. Zhang; Y. B. Liu; S. H. Xu
	2009
发表期刊	Surface & Coatings Technology
ISSN	0257-8972
卷号	204 期号:5 页码:563-570
摘要	coatings with a composition of Fe(48)Cr(15)Mo(14)C(15)B(6)Y(2) were prepared by means of high velocity oxygen fuel (HVOF) thermal spraying under different conditions. Microstructural studies show that the coatings present dense layered structure and low porosity with a fraction of nanocrystals precipitated. The porosity and fraction of the coatings decrease as the kerosene and oxygen flow increase within the parameter range examined. Corrosion behavior of the amorphous coatings was investigated by electrochemical measurement. The results show that the coatings are spontaneously passivated with wide passive region and low passive current density in 3.5% NaCl. 1 N HCl and 1 N H(2)SO(4) solutions. and exhibit an excellent ability to resist localized corrosion. However, the corrosion resistance of the coatings decreases in 1 N NaOH solution with lower transpassive potential and passive region. In addition, the optimal spraying parameter improves the corrosion resistance of the amorphous coatings obviously due to the proper proportion of porosity and amorphous fraction. (C) 2009 Elsevier B.V. All rights reserved.
部门归属	[zhou, z.] beijing univ technol, coll mat sci & engn, beijing 100124, peoples r china. [zhou, z.; wang, l.; wang, f. c.; liu, y. b.; xu, s. h.] beijing inst technol, sch mat sci & engn, beijing 100081, peoples r china. [zhang, h. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;zhou, z (reprint author), beijing univ technol, coll mat sci & engn, beijing 100124, peoples r china;zh@bit.edu.cn
关键词	Fe-based Amorphous Coating Hvof Microstructure Corrosion Resistance Bulk Glassy Alloys Stainless-steel Supercooled Liquid Casting Method Resistance Strength Mechanisms Difference Ni
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WOS记录号	WOS:000271433800003
引用统计	被引频次：181[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32627
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Zhou,L. Wang,F. C. Wang,et al. Formation and corrosion behavior of Fe-based amorphous metallic coatings by HVOF thermal spraying[J]. Surface & Coatings Technology,2009,204(5):563-570.
APA	Z. Zhou,L. Wang,F. C. Wang,H. F. Zhang,Y. B. Liu,&S. H. Xu.(2009).Formation and corrosion behavior of Fe-based amorphous metallic coatings by HVOF thermal spraying.Surface & Coatings Technology,204(5),563-570.
MLA	Z. Zhou,et al."Formation and corrosion behavior of Fe-based amorphous metallic coatings by HVOF thermal spraying".Surface & Coatings Technology 204.5(2009):563-570.