Nanoindentation-induced phase transformation between SiC polymorphs
文献类型：期刊论文
| 作者 | Yao, TT; Yin, DQ; Saito, M; Wu, B; Chen, CL; Ma, XL; Chen, CL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China. |
| 刊名 | MATERIALS LETTERS
 |
| 出版日期 | 2018-06-01 |
| 卷号 | 220页码:152-155 |
| 关键词 | Silicon-carbide Polytypes Molecules 4h |
| ISSN号 | 0167-577X |
| 英文摘要 | Nanoindentation-induced phase transformation between silicon carbide (SiC) polymorphs has been investigated by a combined study of transmission electron microscopy and first principles calculations. In situ nanoindentation of 4H-SiC single crystals revealed the occurrence of a phase transformation from 4H to 3C in the vicinity of a crack. First principles calculations pointed out an extremely low energy barrier for this phase transformation, which could be attributed to the very smooth transition in the atomic and electronic structures across the 3C/4H interface. The phase transformation from 4H to 3C may retard the propagation of cracks and reduce the band gap of SiC. (C) 2018 Elsevier B.V. All rights reserved.; Nanoindentation-induced phase transformation between silicon carbide (SiC) polymorphs has been investigated by a combined study of transmission electron microscopy and first principles calculations. In situ nanoindentation of 4H-SiC single crystals revealed the occurrence of a phase transformation from 4H to 3C in the vicinity of a crack. First principles calculations pointed out an extremely low energy barrier for this phase transformation, which could be attributed to the very smooth transition in the atomic and electronic structures across the 3C/4H interface. The phase transformation from 4H to 3C may retard the propagation of cracks and reduce the band gap of SiC. (C) 2018 Elsevier B.V. All rights reserved. |
| 学科主题 | Materials Science, Multidisciplinary ; Physics, Applied |
| 语种 | 英语 |
| 资助机构 | Key Research Program of Frontier Sciences, CAS [QYZDY-SSW-JSC027]; "Thousand Youth Talents Plan" of China; National Natural Science Foundation of China [51771200, 11332013] |
| 公开日期 | 2018-06-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79296]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Chen, CL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Yao, TT,Yin, DQ,Saito, M,et al. Nanoindentation-induced phase transformation between SiC polymorphs[J]. MATERIALS LETTERS,2018,220:152-155. |
| APA | Yao, TT.,Yin, DQ.,Saito, M.,Wu, B.,Chen, CL.,...&Chen, CL .(2018).Nanoindentation-induced phase transformation between SiC polymorphs.MATERIALS LETTERS,220,152-155. |
| MLA | Yao, TT,et al."Nanoindentation-induced phase transformation between SiC polymorphs".MATERIALS LETTERS 220(2018):152-155. |
入库方式： OAI收割
来源：金属研究所
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