| 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.
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| Source Publication | MATERIALS SCIENCE AND TECHNOLOGY
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| 2013-08-01 | |
| Volume | 29Issue:8Pages:900-907 |
| ISSN | 0267-0836 |
| Abstract | Four 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. |
| Keyword | Molybdenum Silicides Nanostructured Materials Friction/wear Thin Films |
| Subject Area | 制造工艺力学 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000320231600002 |
| Funding Organization | National Natural Science Foundation of China [51175245] |
| Department | MAMYAG激光毛化技术 |
| Classification | Q3 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/47347 |
| Collection | 先进制造工艺力学实验室 |
| Corresponding Author | Xu, 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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