Anisotropic hardness prediction of crystalline hard materials from the electronegativity
文献类型：期刊论文
| 作者 | Li KY ; Yang P ; Xue DF |
| 刊名 | acta materialia
 |
| 出版日期 | 2012 |
| 卷号 | 60期号:1页码:35-42 |
| 关键词 | SINGLE-CRYSTALS SUPERHARD MATERIALS ELASTIC-MODULI MICROHARDNESS ANISOTROPY FRACTURE-TOUGHNESS RHENIUM DIBORIDE NITRIDE COMPRESSIBILITY SEMICONDUCTORS ORIENTATION |
| ISSN号 | 1359-6454 |
| 通讯作者 | xue df |
| 中文摘要 | we have presented an efficient method to predict the anisotropic hardness of crystalline materials along different crystallographic directions or on different crystallographic planes in terms of electronegativity. bond stretching and bending strengths, respectively, are proposed to characterize the ability of a chemical bond to resist stretching and bending deformation, which are the main microscopic deformations in single crystals when measuring indentation hardness. good agreement between the calculated and experimental values of anisotropic hardness for a large range of crystalline materials has been achieved, including sphalerite, wurtzite and rocksalt structured materials, as well as oxides (e.g. alpha-sio(2) and lagao(3)) and graphite. the anisotropic hardness values of other important materials, such as b(12) analogs, group iva nitrides, tungsten carbide structured materials, and transition metal di- and tetra-borides, were quantitatively predicted. we found that materials with the same crystal structure have the same or similar hardness anisotropy. furthermore, the more orderly bond arrangement in single crystals and the greater bond ionicity often result in greater hardness anisotropy. this work shines a light on the nature of hardness and on studies of the anisotropy of other macroscopic properties of crystalline materials. (c) 2011 acta materialia inc. published by elsevier ltd. all rights reserved. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000297822300004 |
| 公开日期 | 2013-09-03 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/48778]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Li KY,Yang P,Xue DF. Anisotropic hardness prediction of crystalline hard materials from the electronegativity[J]. acta materialia,2012,60(1):35-42. |
| APA | Li KY,Yang P,&Xue DF.(2012).Anisotropic hardness prediction of crystalline hard materials from the electronegativity.acta materialia,60(1),35-42. |
| MLA | Li KY,et al."Anisotropic hardness prediction of crystalline hard materials from the electronegativity".acta materialia 60.1(2012):35-42. |
入库方式： OAI收割
来源：长春应用化学研究所
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。