NIMTE OpenIR  > 2018专题
Electronic-structure, corrosion and mechanical properties of nc-CrC/a-C:H films deposited by multi-arc ion plating
Jiang, K. M.; Zhao, D. Q.; Jiang, X.; Huang, Q.; Miao, L. J.; Lu, H. M.; Li, Y.
2018
发表期刊JOURNAL OF ALLOYS AND COMPOUNDS
卷号750页码:560-569
摘要Nanocomposite films consisting of a hard nano-crystalline chromium carbide phase and amorphous carbon matrix (nc-CrC/a-C:H) were fabricated using multi-arc ion plating system. The series of films were deposited in various acetylene (C2H2) flow rates ranging from 50 to 150 standard cubic centi-meter per minute (sccm). The ingredient contents, microstructures, corrosion properties, mechanical characteristics and tribological behaviors of the nc-CrC/a-C:H films were investigated carefully as a function of the C2H2 flow rate. X-ray and ultraviolet photoelectron spectroscopies were performed to explain the intrinsic origin of the excellent properties of nc-CrC/a-C:H films from the viewpoint of chemical bonding and electronic-structure. The results showed the films were formed as nano-scale metastable cubic CrC (grain size of 2-10 nm) embedded in the hydrogenated amorphous carbon (a-C:H) matrix. As the flow rate increased, the content of a-C sp(2) increased while the content of CrC decreased. The valence charge transfer at the interface between a-C:H and nc-CrC makes parts of the C-Cr bonds more ionic. The density of such charge transfer was quantified by the C-Cr*/C-Cr ratio. The charge transfer was further verified by the valence band of the films. The results indicated an obvious impact of the density of valence charge transfer on corrosion and mechanical properties. A relatively low density of charge transfer and high work function could result in an enhanced corrosion resistance of the films. A lower vacancies density caused by valence charge transfer could also strengthen the hardness. The change of the density of charge transfer could be attributed to the metallic chromium content in the films. Thus, we can open up a new possible pathway to design the nc-CrC/a-C:H films for applications. (C) 2018 Elsevier B.V. All rights reserved.
关键词Ray Photoelectron-spectroscopy Bulk Nanocrystalline Aluminum Electrochemical Corrosion Nanocomposite Coatings Carbon Temperature Microstructure Performance Resistance Oxidation
学科领域Chemistry ; Materials Science ; Physics
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/17382
专题2018专题
推荐引用方式
GB/T 7714
Jiang, K. M.,Zhao, D. Q.,Jiang, X.,et al. Electronic-structure, corrosion and mechanical properties of nc-CrC/a-C:H films deposited by multi-arc ion plating[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2018,750:560-569.
APA Jiang, K. M..,Zhao, D. Q..,Jiang, X..,Huang, Q..,Miao, L. J..,...&Li, Y..(2018).Electronic-structure, corrosion and mechanical properties of nc-CrC/a-C:H films deposited by multi-arc ion plating.JOURNAL OF ALLOYS AND COMPOUNDS,750,560-569.
MLA Jiang, K. M.,et al."Electronic-structure, corrosion and mechanical properties of nc-CrC/a-C:H films deposited by multi-arc ion plating".JOURNAL OF ALLOYS AND COMPOUNDS 750(2018):560-569.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Jiang, K. M.]的文章
[Zhao, D. Q.]的文章
[Jiang, X.]的文章
百度学术
百度学术中相似的文章
[Jiang, K. M.]的文章
[Zhao, D. Q.]的文章
[Jiang, X.]的文章
必应学术
必应学术中相似的文章
[Jiang, K. M.]的文章
[Zhao, D. Q.]的文章
[Jiang, X.]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

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。