QQ客服 官方微博 反馈留言

	Electrochemical corrosion behavior of chromium-phosphorus coatings electrodeposited from trivalent chromium baths
	Zeng, Zhixiang1,2; Liang, Aimin1,2; Zhang, Junyan1
刊名	Electrochimica acta
	2008-10-15
卷号	53期号:24页码:7344-7349
关键词	Cr-p coatings Electrochemical corrosion Hypophosphite Passive film Trivalent cr
ISSN号	0013-4686
DOI	10.1016/j.electacta.2008.03.081
通讯作者	Zhang, junyan(junyanzh@yahoo.com)
英文摘要	Chromium-phosphorus (cr-p) coatings are electrodeposited from trivalent cr (cr(ill)) baths containing hypophosphite. the electrochemical corrosion behavior of cr-p coatings, traditional cr coatings deposited in hexavalent cr (cr(vi)) baths, and chromium-carbon (cr-c) coatings deposited in cr(ill) baths containing formate are studied by measuring potentiodynamic polarization curves in a 10 wt% hcl solution. the composition and morphology of the coating surface layers are investigated by x-ray photoelectron spectrometry (xps) and scanning electron rnicroscopy (sem), respectively. the results of electrochemical tests show that cr-p coatings exhibit better corrosion resistance than traditional cr and cr-c coatings, which is characterized by a lower critical current density, lower passive current density, and lager passive potential range. xps and sem analyses confirm that the excellent corrosion resistance of cr-p coatings is attributed to the formation of a phosphide passive film, which has high stability and self-repairing ability, and can act as a "buffer" to reject the penetration of chloride ions. (c) 2008 elsevier ltd. all rights reserved.
WOS关键词	ALLOY COATINGS ; HARD-CHROMIUM ; PULSE-CURRENT ; CR ; MECHANISM ; DEPOSITS ; FE
WOS研究方向	Electrochemistry
WOS类目	Electrochemistry
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000258977900044
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2391402
专题	中国科学院大学
通讯作者	Zhang, Junyan
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Zhixiang,Liang, Aimin,Zhang, Junyan. Electrochemical corrosion behavior of chromium-phosphorus coatings electrodeposited from trivalent chromium baths[J]. Electrochimica acta,2008,53(24):7344-7349.
APA	Zeng, Zhixiang,Liang, Aimin,&Zhang, Junyan.(2008).Electrochemical corrosion behavior of chromium-phosphorus coatings electrodeposited from trivalent chromium baths.Electrochimica acta,53(24),7344-7349.
MLA	Zeng, Zhixiang,et al."Electrochemical corrosion behavior of chromium-phosphorus coatings electrodeposited from trivalent chromium baths".Electrochimica acta 53.24(2008):7344-7349.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。