副教授 博士生导师 硕士生导师
任职 : 辽宁省能源材料及器件重点实验室副主任
性别: 男
毕业院校: 大连理工大学
学位: 博士
所在单位: 材料科学与工程学院
学科: 材料物理与化学. 材料表面工程
办公地点: 新三束4#楼311室
联系方式: 0411-84706661-101
电子邮箱: aimin@dlut.edu.cn
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论文类型: 期刊论文
发表时间: 2014-03-15
发表刊物: SURFACE & COATINGS TECHNOLOGY
收录刊物: SCIE、EI、Scopus
卷号: 242
页面范围: 14-19
ISSN号: 0257-8972
关键字: Borides; Amorphous materials; Thin film; Hardness; Cluster-plus-glue-atom model
摘要: obtain protecting thin films with excellent comprehensive properties, B-rich B-C-Mg amorphous thin films were designed using the cluster-plus-glue-atom model and then fabricated through magnetron sputtering technique. A type of cluster formula [B-(B6-x/2Cx/2)](B6-x/2Mgx/2)(X <= 2), that contains 24 valence electrons per unit cluster formula, was derived from relevant crystalline borides B12C2Mg and B7Mg. Amorphous and amorphous/nanocrystal thin films covering roughly a composition range formulated by [B-B5C]Mg (x = 2) similar to [B-BS.5C0.5]B0.5Mg0.5 (x = 1), prepared by magnetron sputtering, show increasing hardness, elastic modulus, toughness and coefficient of friction with increasing boron contents. The amorphous thin film corresponding to the critical of cluster formula, [B-B5C]Mg (x = 2), can probably be a good protective coating material for its relatively high hardness, about 24 GPa, and a fairly low coefficient of friction, about 0.05 (in air at room temperature, load 5N, Si3N4 ball as the counterpart). In addition, amorphous/nanocrystal sample B85.1C8.7Mg6.2 possesses a high hardness of 34 GPa in combination with a toughness of 3 MPa*m(1/2), being comparable to that of nc-TiN/SixN nanocomposite. (C) 2014 Elsevier B.V. All rights reserved.