Characterization of a new Nb-silicide (-Nb11Si4) in Nb-Si binary systems
文献类型：期刊论文
| 作者 | G. M. Cheng ; H. Y. Qian ; L. L. He ; H. Q. Ye |
| 刊名 | Philosophical Magazine
 |
| 出版日期 | 2010 |
| 卷号 | 90期号:19页码:2557-2568 |
| 关键词 | microstructure precipitation niobium-silicide orientation relationship transmission electron microscopy orientation relationship phase-stability composites alloys |
| ISSN号 | 1478-6435 |
| 中文摘要 | A new Nb-silicide, -Nb11Si4, identified as a second phase precipitated from a Nb-Si solid solution, was characterized by combining crystallographic analysis with first-principles calculations. The crystal structure was determined as a body-centered orthorhombic system with space group Immm using transmission electron microscope (TEM). Based on the crystallographic relationship between the and Nb phases, [image omitted] // {200}Nb and [image omitted] // < 001 > Nb, eight possible unit cells were proposed, which were optimized by first-principles calculations. By analyzing the experimental and calculated data, we obtained the final unit cell of the phase, which was confirmed by high-resolution TEM images. In addition, density of states and electron density difference of -Nb11Si4 revealed that the structure was in a metastable state at low temperature because not all the bonding states were filled. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31043]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | G. M. Cheng,H. Y. Qian,L. L. He,et al. Characterization of a new Nb-silicide (-Nb11Si4) in Nb-Si binary systems[J]. Philosophical Magazine,2010,90(19):2557-2568. |
| APA | G. M. Cheng,H. Y. Qian,L. L. He,&H. Q. Ye.(2010).Characterization of a new Nb-silicide (-Nb11Si4) in Nb-Si binary systems.Philosophical Magazine,90(19),2557-2568. |
| MLA | G. M. Cheng,et al."Characterization of a new Nb-silicide (-Nb11Si4) in Nb-Si binary systems".Philosophical Magazine 90.19(2010):2557-2568. |
入库方式： OAI收割
来源：金属研究所
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