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Role of Al additions in wear control of nanocrystalline Mo(Si1-xAlx)(2) coatings prepared by double cathode glow discharge technique
Xu J; Fan HS; Li ZY(李正阳); Xu, J (reprint author), Nanjing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, 29 Yudao St, Nanjing 210016, Jiangsu, Peoples R China.
Source PublicationMATERIALS SCIENCE AND TECHNOLOGY
2013-08-01
Volume29Issue:8Pages:900-907
ISSN0267-0836
AbstractFour kinds of nanocrystalline Mo(Si1-xAlx)(2) coatings with differing Al contents are prepared onto a Ti-6Al-4V substrates by a double cathode glow discharge apparatus. The microstructural features of the deposited coatings were characterised by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. These coatings are composed of the equiaxed C40-MoSi2 grains with the average grain size of similar to 5 nm. Nano-indentation measurements indicated that the hardness H, elastic modulus E and the H/E or H-3/E-2 ratio of the nanocrystalline Mo(Si1-xAlx)(2) coatings slightly increase with the increase in Al content. The tribological behaviour of the nanocrystalline Mo(Si1-xAlx)(2) coating sliding against a ZrO2 ceramic ball at room temperature has been compared using a ball-on-disc type tribometer under unlubricated conditions. Experimental results showed that the specific wear rates of the nanocrystalline Mo(Si1-xAlx)(2) coatings decrease with increasing Al content and are dramatically reduced by more than 1-2 orders of magnitude over the uncoated Ti-6A1-4V. The enhancement of wear resistance of the nanocrystalline Mo(Si1-xAlx)(2) coatings by Al additions is correlated with the increased mechanical properties and the forming oxide layer by tribochemical reactions.
KeywordMolybdenum Silicides Nanostructured Materials Friction/wear Thin Films
Subject Area制造工艺力学
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000320231600002
Funding OrganizationNational Natural Science Foundation of China [51175245]
DepartmentMAMYAG激光毛化技术
ClassificationQ3
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/47347
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,Fan HS,Li ZY,et al. Role of Al additions in wear control of nanocrystalline Mo(Si1-xAlx)(2) coatings prepared by double cathode glow discharge technique[J]. MATERIALS SCIENCE AND TECHNOLOGY,2013,29(8):900-907.
APA Xu J,Fan HS,Li ZY,&Xu, J .(2013).Role of Al additions in wear control of nanocrystalline Mo(Si1-xAlx)(2) coatings prepared by double cathode glow discharge technique.MATERIALS SCIENCE AND TECHNOLOGY,29(8),900-907.
MLA Xu J,et al."Role of Al additions in wear control of nanocrystalline Mo(Si1-xAlx)(2) coatings prepared by double cathode glow discharge technique".MATERIALS SCIENCE AND TECHNOLOGY 29.8(2013):900-907.
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