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Mechanical and electrochemical properties of nanocrystalline (Mo1-xCrx)(3)Si coatings: Experimental and modeling studies
Xu J; Li ZY(李正阳); Lu XL; Yan Y; 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 PublicationJournal of Alloys and Compounds
2014-10-25
Volume611Pages:179-190
ISSN0925-8388
AbstractFour (Mo-1 Cr-x(x))(3)Si nanocrystalline coatings with a cubic A15 structure were fabricated onto Ti-6Al-4V substrates using a double-cathode glow discharge technique. The elastic modulus and hardness of the nanocrystalline (Mo-1 Cr-x(x))(3)Si coatings were measured by nanoindentation and their electrochemical behavior was investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) in a 3.5 wt% NaCl solution. The results showed that the corrosion and abrasion damage resistance of the nanocrystalline (Mo-1 Cr-x(x))(3)Si coatings increased with increasing Cr addition. To gain a deeper understanding of the effect of Cr alloying on the electrochemical behavior of these (Mo-1 Cr-x(x))(3)Si coatings, the electronic structure and Mulliken populations were modeled by first-principles calculations. It revealed that the Cr alloying can enhance the protective nature of passive layers developed on the Mo3Si coatings. The findings provide a promising foundation for the development of mechanically robust, corrosion-resistant Mo3Si-based coatings for surface protection. (C) 2014 Elsevier B.V. All rights reserved.
KeywordIntermetallic Eis Polarization First-principle Calculation
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000338932400030
Funding OrganizationThe authors acknowledge the financial support of the National Natural Science Foundation of China under Grant Nos. 51175245 and 51374130 and the Aeronautics Science Foundation of China under Grant No. 2013ZE52058.
DepartmentMAMYAG激光毛化技术
Classification一类
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49042
Collection先进制造工艺力学实验室
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,Li ZY,Lu XL,et al. Mechanical and electrochemical properties of nanocrystalline (Mo1-xCrx)(3)Si coatings: Experimental and modeling studies[J]. Journal of Alloys and Compounds,2014,611:179-190.
APA Xu J.,李正阳.,Lu XL.,Yan Y.,Munroe P.,...&Xu, J .(2014).Mechanical and electrochemical properties of nanocrystalline (Mo1-xCrx)(3)Si coatings: Experimental and modeling studies.Journal of Alloys and Compounds,611,179-190.
MLA Xu J,et al."Mechanical and electrochemical properties of nanocrystalline (Mo1-xCrx)(3)Si coatings: Experimental and modeling studies".Journal of Alloys and Compounds 611(2014):179-190.
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