| Electrochemical corrosion behavior of chromium–phosphorus coatings electrodeposited from trivalent chromium baths | |
| Department | 固体润滑国家重点实验室 |
曾志翔; 梁爱民 ; 张俊彦
| |
| 2008 | |
| Source Publication | Electrochimica Acta
 |
| ISSN | 0013-4686 |
| Volume | 53Pages:7344-7349 |
| Abstract | Chromium–phosphorus (Cr–P) coatings are electrodeposited from trivalent Cr (Cr(III)) 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(III) 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 microscopy (SEM), respectively. The results of electrochemical tests showthat 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. |
| Keyword | Cr–p Coatings Electrochemical Corrosion Hypophosphite Passive FIlm Trivalent Cr |
| Subject Area | 材料科学与物理化学 |
| Funding Organization | the “Hundred Talents Pro- gram” of the Chinese Academy of Sciences;the InnovativeGroup Foundation from NSFC (Grant No. 50421502) |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 纳米润滑研究组 |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/2602 |
| Collection | 固体润滑国家重点实验室（LSL） |
| Corresponding Author | 张俊彦 |
| Recommended Citation GB/T 7714 | 曾志翔,梁爱民,张俊彦. Electrochemical corrosion behavior of chromium–phosphorus coatings electrodeposited from trivalent chromium baths[J]. Electrochimica Acta,2008,53:7344-7349. |
| APA | 曾志翔,梁爱民,&张俊彦.(2008).Electrochemical corrosion behavior of chromium–phosphorus coatings electrodeposited from trivalent chromium baths.Electrochimica Acta,53,7344-7349. |
| MLA | 曾志翔,et al."Electrochemical corrosion behavior of chromium–phosphorus coatings electrodeposited from trivalent chromium baths".Electrochimica Acta 53(2008):7344-7349. |
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| 20087344-7349.pdf（1017KB） | 开放获取 | License | View Application Full Text | |||
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