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题名: Amorphous-based B-C-Mg thin films obtained through a composition design using cluster-plus-glue-atom model
作者: Zhou, Xuyang1;  Ma, Yanping1, 2;  Gong, Faquan1, 3;  Wu, Aimin1, 4;  Chen, Chonglin5;  Dong, Chuang1
关键词: Borides ;  Amorphous materials ;  Thin film ;  Hardness ;  Cluster-plus-glue-atom model
刊名: SURFACE & COATINGS TECHNOLOGY
发表日期: 2014-03-15
DOI: 10.1016/j.surfcoat.2013.12.076
卷: 242, 页:14-19
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Materials Science, Coatings & Films ;  Physics, Applied
研究领域[WOS]: Materials Science ;  Physics
英文摘要: 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.
关键词[WOS]: BULK METALLIC GLASSES ;  MECHANICAL-PROPERTIES ;  CRYSTAL-STRUCTURE ;  DEPOSITION ;  TOUGHNESS ;  ALMGB14 ;  MICROSTRUCTURE ;  FORMULAS ;  SI
语种: 英语
WOS记录号: WOS:000333782400003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145688
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Dalian Univ Technol, Key Lab Mat Modificat, Minist Educ, Sch Mat Sci & Engn, Dalian 116024, Peoples R China
2.Hainan Univ, Special Glass Key Lab Hainan Prov, Sch Mat & Chem Engn, Haikou 570228, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Chem Lasers, Dalian 116023, Peoples R China
4.Dalian Univ Technol, Changzhou Inst, Changzhou 213164, Peoples R China
5.Univ Texas San Antonio, Dept Phys & Astron, San Antonio, TX 78249 USA

Recommended Citation:
Zhou, Xuyang,Ma, Yanping,Gong, Faquan,et al. Amorphous-based B-C-Mg thin films obtained through a composition design using cluster-plus-glue-atom model[J]. SURFACE & COATINGS TECHNOLOGY,2014,242:14-19.
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