| Preparation, characterization and properties of Cr-incorporated DLC films on magnesium alloy | |
| Department | 固体润滑国家重点实验室 |
| Dai W(代伟); Wu GS(吴国松); Wang AY(汪爱英) | |
| 2010 | |
| Source Publication | Diamond and Related Materials
 |
| ISSN | 0925-9635 |
| Volume | 19Pages:1307-1315 |
| Abstract | Cr-incorporated diamond-like carbon (Cr-DLC) films were deposited on AZ31 magnesium alloy as protectivecoatings by a hybrid beams deposition system, which consists of a DC magnetron sputtering of Cr target(99.99%) and a linear ion source (LIS) supplied with CH4 precursor gas. The Cr concentration (from 2.34 to31.5 at.%) in the films was controlled by varying the flow ratio of Ar/CH4. Scanning electron microscopy(SEM), transmission electron microscopy (TEM), Raman spectroscopy and X-ray photoelectron spectroscopy(XPS) were used to investigate the microstructure and composition of Cr-DLC films systematically. Anelectrochemical system and a ball-on-disk tribotester were applied to test the corrosion and tribologicalproperties of the film on the AZ31 substrate, respectively. At low Cr doping (2.34 at.%), the film mainlyexhibited the feature of amorphous carbon, while at high doping (31.5 at.%), chromium carbide crystallinephase occurred in the amorphous carbon matrix of the film. In this study, all the prepared Cr-DLC filmsshowed higher adhesion to AZ31 than the DLC film. Especially for the film with low Cr doping (2.34 at.%), itowned the lowest internal stress and the highest adhesion to substrate among all the films. Furthermore, thisfilm could also improve the wear resistance of magnesium alloy effectively. But, none of the films couldimprove the corrosion resistance of the magnesium alloy in 3.5 wt.% NaCl solution due to the existence ofthrough-thickness defects in the films. |
| Keyword | Magnesium Alloy Cr-dlc Microstructure Corrosion Wear |
| Subject Area | 材料科学与物理化学 |
| Funding Organization | Zhejiang Province Key Technologies R & D Program (Grant No. 2008C21055, 2009C11SA550048);One of the authors, Guosong Wu, thanks the financial support from China Postdoctoral Science Foundation (Grant No. 20080430694);Shanghai Postdoctoral Scientific Program (Grant No. 08R214156) |
| Indexed By | SCI |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/986 |
| Collection | 固体润滑国家重点实验室（LSL） |
| Corresponding Author | Wang AY(汪爱英) |
| Recommended Citation GB/T 7714 | Dai W,Wu GS,Wang AY. Preparation, characterization and properties of Cr-incorporated DLC films on magnesium alloy[J]. Diamond and Related Materials,2010,19:1307-1315. |
| APA | 代伟,吴国松,&汪爱英.(2010).Preparation, characterization and properties of Cr-incorporated DLC films on magnesium alloy.Diamond and Related Materials,19,1307-1315. |
| MLA | 代伟,et al."Preparation, characterization and properties of Cr-incorporated DLC films on magnesium alloy".Diamond and Related Materials 19(2010):1307-1315. |
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| 20101307-1315.pdf（2400KB） | 开放获取 | License | View Application Full Text | |||
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