Electrochemical corrosion behavior of nanocrystalline Co coatings explained by higher grain boundary density
文献类型：期刊论文
| 作者 | Liu WM(刘维民) ; Xue QJ(薛群基); Wang LP(王立平); Hu LT(胡丽天); Zhang JY(张俊彦)
|
| 刊名 | Electrochimica Acta
 |
| 出版日期 | 2007 |
| 卷号 | 52页码:4342-4350 |
| 关键词 | Nanocrystalline Cobalt Corrosion behavior Electrodeposition Grain boundary density |
| ISSN号 | 0013-4686 |
| 通讯作者 | 王立平 ; 薛群基 |
| 中文摘要 | In this paper, nanocrystalline Co coatings were prepared using pulse reverse electrodeposition method. The electrochemical corrosion behavior of nanocrystalline (NC) Co compared with coarse-grained Co (CG) coatings in different corrosion media were characterized using potentiodynamic polarization test, electrochemical impedance spectroscopy (EIS) and X-ray photoelectron spectroscopy (XPS). Results showed that in the NaOH or NaCl solutions, the NC Co exhibited improved corrosion resistance when compared with CG Co coatings, which is due to the higher grain boundary density in NC materials to quickly form a stable and protective passive film. In the case of NC Co coatings in HCl or H2SO4 solutions, since no obviously passive process can be observed, high grain boundary density in NC Co will accelerate corrosion by providing high-density of active sites for preferential attack. The controversial experimental results on NC Co coatings in different corrosion media can be reasonably explained by the positive or negative effect of high-density network of grain boundaries in NC materials. |
| 学科主题 | 材料科学与物理化学 |
| 收录类别 | SCI |
| 资助信息 | the National Key Basic Research Program (No. 2007CB607601);National Natural Science Foundation of China (Grant No. 50432020;50575218);Hundreds Talent Program of Chinese Academy of Sciences;the prearranged project of General Armament Department (maintenance techniques subject) |
| 语种 | 英语 |
| WOS记录号 | WOS:000245476100008 |
| 公开日期 | 2013-11-01 |
| 源URL | [http://210.77.64.217/handle/362003/4075]  |
| 专题 | 兰州化学物理研究所_固体润滑国家重点实验室 兰州化学物理研究所_先进润滑与防护材料研究发展中心 |
| 通讯作者 | Xue QJ(薛群基); Wang LP(王立平) |
| 推荐引用方式 GB/T 7714 | Liu WM,Xue QJ,Wang LP,et al. Electrochemical corrosion behavior of nanocrystalline Co coatings explained by higher grain boundary density[J]. Electrochimica Acta,2007,52:4342-4350. |
| APA | 刘维民,薛群基,王立平,胡丽天,&张俊彦.(2007).Electrochemical corrosion behavior of nanocrystalline Co coatings explained by higher grain boundary density.Electrochimica Acta,52,4342-4350. |
| MLA | 刘维民,et al."Electrochemical corrosion behavior of nanocrystalline Co coatings explained by higher grain boundary density".Electrochimica Acta 52(2007):4342-4350. |
入库方式： OAI收割
来源：兰州化学物理研究所
浏览0
下载0
收藏0
其他版本
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。