Role of Cr additions in enhancing wear and oxidation resistance of (Mo1-xCrx)Si-2 nanocrystalline films
文献类型：期刊论文
| 作者 | Xu J; Li ZY(李正阳) ; Munroe P; Xie ZH
|
| 刊名 | CERAMICS INTERNATIONAL
 |
| 出版日期 | 2014-12 |
| 卷号 | 40期号:10页码:15859-15874 |
| 通讯作者邮箱 | xujiang73@nuaa.edu.cn |
| ISSN号 | 0272-8842 |
| 关键词 | Molybdenum silicides Oxidation behavior Friction and wear Electrochemical impedance spectroscopy |
| 通讯作者 | Xu, J (reprint author), Nanjing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, 29 Yudao St, Nanjing 210016, Jiangsu, Peoples R China. |
| 产权排序 | [Xu, Jiang] Nanjing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, Nanjing 210016, Jiangsu, Peoples R China; [Xu, Jiang; Xie, Zong-Han] Wuhan Inst Technol, Sch Mech & Elect Engn, Wuhan 430073, Peoples R China; [Li, ZhengYang] Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; [Munroe, Paul] Univ New S Wales, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia; [Xie, Zong-Han] Univ Adelaide, Sch Mech Engn, Adelaide, SA 5005, Australia |
| 合作状况 | 国际 |
| 中文摘要 | In order to explore the effects of Cr alloying on the wear and oxidation resistance of MoSi2 films, four kinds of (Mo1-xCrx)Si-2 (x=0, 0.05, 0.10 and 0.15) nanocrystalline films of differing Cr contents were fabricated onto Ti6Al4V substrates by a double cathode glow discharge apparatus. The microstructure features of the as-deposited films were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The hardness and elastic modulus of the (Mo1-xCrx)Si-2 nanocrystalline films were evaluated by nano-indentation. The dry sliding wear properties of the as-deposited films sliding against GCr15 rolling bearing steel were studied using a ball-on-disc type tribometer at room temperature. The results showed that the friction coefficients and specific wear rates of the (Mo1-xCrx)Si-2 nanocrystalline films decreased with increasing Cr content in the films. The oxidation behavior of the (Mo1-xCrx)Si-2 nanocrystalline films was investigated at 500 degrees C under cyclic oxidation conditions in air for exposure time of 100 h. The oxidation kinetics of the films was found to obey a subparabolic behavior, and three Cr-containing MoSi2 films showed a much lower weight gain and the oxidation rate constant as compared to the monolithic MoSi2 film during a 100 h exposure. Surface morphologies, phase constituents and electrochemical behavior of the oxide scales formed on the (Mo1-xCrx)Si-2 nanocrystalline films were characterized using FESEM, XRD and electrochemical-impedance spectroscopy (EIS). The electrochemical results revealed that the structure of the oxide scales changed from a homogeneous and dense structure to a duplex structure consisting of a porous outer layer and a denser inner layer. The overall resistance of the oxide scales depended strongly on both the oxidation time and Cr content in the films. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved. |
| 学科主题 | Materials Science |
| 分类号 | 一类 |
| 资助信息 | The 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. |
| 收录类别 | SCI ; EI |
| 原文出处 | http://dx.doi.org/10.1016/j.ceramint.2014.07.114 |
| 语种 | 英语 |
| WOS记录号 | WOS:000343353600058 |
| 公开日期 | 2014-11-27 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/49354]  |
| 专题 | 力学研究所_先进制造工艺力学重点实验室 |
| 推荐引用方式 GB/T 7714 | Xu J,Li ZY,Munroe P,et al. Role of Cr additions in enhancing wear and oxidation resistance of (Mo1-xCrx)Si-2 nanocrystalline films[J]. CERAMICS INTERNATIONAL,2014,40(10):15859-15874. |
| APA | Xu J,Li ZY,Munroe P,&Xie ZH.(2014).Role of Cr additions in enhancing wear and oxidation resistance of (Mo1-xCrx)Si-2 nanocrystalline films.CERAMICS INTERNATIONAL,40(10),15859-15874. |
| MLA | Xu J,et al."Role of Cr additions in enhancing wear and oxidation resistance of (Mo1-xCrx)Si-2 nanocrystalline films".CERAMICS INTERNATIONAL 40.10(2014):15859-15874. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。