IMECH-IR  > 先进制造工艺力学重点实验室
Niobium addition enhancing the corrosion resistance of nanocrystalline Ti5Si3 coating in H2SO4 solution
Xu J; Liu L; Li ZY(李正阳); Munroe P; Xie ZH; Xu, J (reprint author), Nanjing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, 29 Yudao St, Nanjing 210016, Jiangsu, Peoples R China.
Source PublicationActa Materialia
2014-01-15
Volume63Pages:245-260
ISSN1359-6454
AbstractIn this paper, novel Nb-containing Ti5Si3 (i.e., Ti56.2Nb6.3Si37.5 and Ti50.0Nb12.5Si37.5) nanocrystalline coatings were deposited onto Ti-6Al-4V substrates by a double glow discharge plasma technique. The effects of Nb alloying on the electrochemical behavior of the Ti5Si3 nanocrystalline coatings were systematically investigated in a naturally aerated 5 wt.% H2SO4 solution, for which various electrochemical techniques, including potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), potentiostatic polarization and Mott-Schottky analysis, were employed. Moreover, to evaluate the corrosion performance of the as-deposited coatings over an extended period, their corrosion resistance was analyzed after 7 days' immersion in a 5 wt.% H2SO4 solution by EIS measurements and observations of corroded surface morphologies. The results showed that the Ti62.5-xNbxSi37.5(x = 0, 6.3, 12.5) nanocrystalline coatings exhibit superior corrosion resistance compared with Ti-6Al-4V, and their corrosion resistance is enhanced with increasing Nb content, suggesting that Nb alloying is an effective strategy for improving the corrosion protection ability of the Ti5Si3 nanocrystalline coating. The roles of Nb additions in enhancing the corrosion resistance of the Ti5Si3 nanocrystalline coatings can be summarized as: (a) reducing the residual tensile stresses of the as-deposited coatings and (b) tailoring the composition, compactness and electronic structure of the passive films formed. These findings are expected to broaden the application of Ti5Si3 as a highly corrosion-resistant coating for engineering components operating under aggressive conditions.
KeywordNanocrystalline Film Sputter Deposition Electrochemical Impedance Corrosion Transition-metal Silicides
Subject Area固体力学
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000329552100023
Funding OrganizationNational Natural Science Foundation of China [51374130]; Aeronautics Science Foundation of China [2013ZE52058]
DepartmentMAMYAG激光毛化技术
Classification一类
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48251
Collection先进制造工艺力学重点实验室
Corresponding AuthorXu, J (reprint author), Nanjing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, 29 Yudao St, Nanjing 210016, Jiangsu, Peoples R China.
Recommended Citation
GB/T 7714
Xu J,Liu L,Li ZY,et al. Niobium addition enhancing the corrosion resistance of nanocrystalline Ti5Si3 coating in H2SO4 solution[J]. Acta Materialia,2014,63:245-260.
APA Xu J,Liu L,李正阳,Munroe P,Xie ZH,&Xu, J .(2014).Niobium addition enhancing the corrosion resistance of nanocrystalline Ti5Si3 coating in H2SO4 solution.Acta Materialia,63,245-260.
MLA Xu J,et al."Niobium addition enhancing the corrosion resistance of nanocrystalline Ti5Si3 coating in H2SO4 solution".Acta Materialia 63(2014):245-260.
Files in This Item: Download All
File Name/Size DocType Version Access License
IMCAS-J2014-013.pdf(2423KB) 开放获取--View Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Xu J]'s Articles
[Liu L]'s Articles
[李正阳]'s Articles
Baidu academic
Similar articles in Baidu academic
[Xu J]'s Articles
[Liu L]'s Articles
[李正阳]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Xu J]'s Articles
[Liu L]'s Articles
[李正阳]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: IMCAS-J2014-013.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.