Y4Si2O7N2: A New Oxynitride with Low Thermal Conductivity
文献类型：期刊论文
| 作者 | L. C. Sun ; B. Liu ; J. M. Wang ; J. Y. Wang ; Y. C. Zhou ; Z. J. Hu |
| 刊名 | Journal of the American Ceramic Society
 |
| 出版日期 | 2012 |
| 卷号 | 95期号:10页码:3278-3284 |
| 关键词 | theoretical elastic stiffness barrier coatings mechanical-properties gas gamma-y2si2o7 crystal y2sio5 system phase si3n4-sio2-y2o3 |
| ISSN号 | 0002-7820 |
| 中文摘要 | Search for new thermal barrier materials with high-temperature stability is very difficult because there are intractable choices among thousands of possible candidates. The present paper shows that identifying and developing new low thermal conductivity materials can be accomplished by first-principles calculations of equilibrium crystal structure and elasticity, and thereafter making theoretical prediction of minimum high-temperature lattice thermal conductivity basing on David Clarke's method for insulating materials. We highlight a new oxynitride ceramic, Y4Si2O7N2, with a low theoretical minimum thermal conductivity of 1.12 similar to W center dot m-1 center dot K-1. The theoretical result is further validated by experimental measurement of thermal conductivity of dense and bulk Y4Si2O7N2. The experimental thermal conductivity is 1.50 similar to W center dot m-1 center dot K-1 at 1300 similar to K. Furthermore, thermal properties of Y4Si2O7N2 are investigated for evaluating its potential performances. |
| 原文出处 | |
| 公开日期 | 2013-02-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/60244]  |
| 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 | L. C. Sun,B. Liu,J. M. Wang,et al. Y4Si2O7N2: A New Oxynitride with Low Thermal Conductivity[J]. Journal of the American Ceramic Society,2012,95(10):3278-3284. |
| APA | L. C. Sun,B. Liu,J. M. Wang,J. Y. Wang,Y. C. Zhou,&Z. J. Hu.(2012).Y4Si2O7N2: A New Oxynitride with Low Thermal Conductivity.Journal of the American Ceramic Society,95(10),3278-3284. |
| MLA | L. C. Sun,et al."Y4Si2O7N2: A New Oxynitride with Low Thermal Conductivity".Journal of the American Ceramic Society 95.10(2012):3278-3284. |
入库方式： OAI收割
来源：金属研究所
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