In situ reaction synthesis, electrical and thermal, and mechanical properties of Nb(4)AlC(3)
文献类型：期刊论文
| 作者 | C. F. Hu ; F. Z. Li ; L. F. He ; M. Y. Liu ; J. Zhang ; J. M. Wang ; Y. W. Bao ; J. Y. Wang ; Y. C. Zhou |
| 刊名 | Journal of the American Ceramic Society
 |
| 出版日期 | 2008 |
| 卷号 | 91期号:7页码:2258-2263 |
| 关键词 | phase thin-films crystal-structure pressing method ti3sic2 ceramics carbide behavior ta4alc3 ti3alc2 ti4aln3 |
| ISSN号 | 0002-7820 |
| 中文摘要 | In this work, a bulk Nb(4)AlC(3) ceramic was prepared by an in situ reaction/hot pressing method using Nb, Al, and C as the starting materials. The reaction path, microstructure, physical, and mechanical properties of Nb(4)AlC(3) were systematically investigated. The thermal expansion coefficient was determined as 7.2 x 10(-6) K(-1) in the temperature range of 200 degrees-1100 degrees C. The thermal conductivity of Nb(4)AlC(3) increased from 13.5 W.(m.K)(-1) at room temperature to 21.2 W.(m.K)(-1) at 1227 degrees C, and the electrical conductivity decreased from 3.35 x 10(6) to 1.13 x 10(6) Omega(-1).m(-1) in a temperature range of 5-300 K. Nb(4)AlC(3) possessed a low hardness of 2.6 GPa, high flexural strength of 346 MPa, and high fracture toughness of 7.1 MPa.m(1/2). Most significantly, Nb(4)AlC(3) could retain high modulus and strength up to very high temperatures. The Young's modulus at 1580 degrees C was 241 GPa (79% of that at room temperature), and the flexural strength could retain the ambient strength value without any degradation up to the maximum measured temperature of 1400 degrees C. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32814]  |
| 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 | C. F. Hu,F. Z. Li,L. F. He,et al. In situ reaction synthesis, electrical and thermal, and mechanical properties of Nb(4)AlC(3)[J]. Journal of the American Ceramic Society,2008,91(7):2258-2263. |
| APA | C. F. Hu.,F. Z. Li.,L. F. He.,M. Y. Liu.,J. Zhang.,...&Y. C. Zhou.(2008).In situ reaction synthesis, electrical and thermal, and mechanical properties of Nb(4)AlC(3).Journal of the American Ceramic Society,91(7),2258-2263. |
| MLA | C. F. Hu,et al."In situ reaction synthesis, electrical and thermal, and mechanical properties of Nb(4)AlC(3)".Journal of the American Ceramic Society 91.7(2008):2258-2263. |
入库方式： OAI收割
来源：金属研究所
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