全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

块体纳米晶工业纯铁在0.4mol/LHCl溶液中的电化学腐蚀行为

, PP. 293-297

Keywords: 块体纳米晶工业纯铁(BNII),深度轧制,盐酸溶液,腐蚀

Full-Text   Cite this paper   Add to My Lib

Abstract:

借助动电位极化和电化学阻抗谱(EIS)测量,研究块体纳米晶工业纯铁(BNII)和粗晶工业纯铁(CPII)在室温0.4mol/LHCl溶液中的电化学腐蚀行为;用扫描电子显微镜(SEM)观察腐蚀后的表面形貌.结果表明,与CPII相比,BNII的自腐蚀电位Ecorr正向移动43mV,自腐蚀电流Icorr由68.37μA?cm-2减小为29.55μA?cm-2;电荷转移电阻Rt由427.0Ω?cm2增大到890.1Ω?cm2.两种材料发生的点蚀呈不同的形态BNII的点蚀孔小而浅,腐蚀深度比较均匀,而CPII的腐蚀表面形成的点蚀孔深且孔径较大.与CPII相比,BNII在HCl溶液中的耐腐蚀性能明显提高.

References

[1]  高岩, 罗承萍. 纳米晶体材料耐腐蚀性能的研究现状[J].机械工程材料, 2005, 29(1): 40.
[2]  孟国哲. Fe-Cr纳米涂层的腐蚀行为研究[D]. 沈阳:中科院金属研究所, 2005.
[3]  Mariano N A, Souza C A C, Oliviera M F. Corrosion resistance of amorphous and nanocrystallinne Fe-$M$-B($M$=Zr, Nb)alloys[J]. Mater. Sci. Forum., 2000, 861: 343.
[4]  Rofagha R, Langer R, El-Sherik A M, et al. The corrosion behavior of nanocrystalline nickel[J]. Scr. Metall. , 1991, 25 (12):2867.
[5]  Vinogradov A, Mimaki T, Hashimoto S, et al. On the corrosion behaviour of ultra-fine grain copper [J]. Scr. Mater.,1999, 41(3): 319.
[6]  Wang S G, Shen C B, Long K, et al. Preparation and electrochemical corrosion behavior of bulk nanocrystalline ingot iron in HCl acid solution[J]. J. Phys. Chem. B, 2005, 109: 2499.
[7]  Li P, Tan T C, Lee J Y. Impedance spectra of the anodic dissolution of mild steel in sulfuric acid[J]. Corros. Sci., 1996,38(11): 1935.
[8]  Wang S G, Tian E K, Lung C W. Surface energy of arbitrary crystal plane of bcc and fcc metals[J]. J. Phys. Chem. Solids, 2000,61(8): 1295.
[9]  Tyson W R, Miller W A. Surface free energies of solid metals : Estimation from liquid surface tension measurements[J].Surf. Sci., 1977, 62(1): 267.
[10]  Wang S G, Shen C B, Long K, et al. The electrochemical corrosion of bulk nanocrystalline ingot iron in acidic sulfate solution[J]. J. Phys. Chem. B, 2006, 110: 377.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133