Reactive Hot Pressing and Properties of Nb(2)AlC
文献类型：期刊论文
| 作者 | W. Zhang ; N. Travitzky ; C. F. Hu ; Y. C. Zhou ; P. Greil |
| 刊名 | Journal of the American Ceramic Society
 |
| 出版日期 | 2009 |
| 卷号 | 92期号:10页码:2396-2399 |
| 关键词 | liquid reaction synthesis (ti mechanical-properties nb)(2)alc electrical-properties bulk cr2alc ti3sic2 ceramics ti2alc microstructure carbides |
| ISSN号 | 0002-7820 |
| 中文摘要 | Dense Nb(2)AlC ceramic was synthesized from NbC, Nb, and Al powder mixture at 1650 degrees C and a pressure of 30 MPa for 90 min using an in situ reaction/hot-pressing method. The reaction kinetics, microstructure, physical, and mechanical properties of the fabricated material were investigated. A thermal expansion coefficient of similar to 8.1 x 10(-6) K(-1) was measured in the temperature range of 30 degrees-1050 degrees C. At room temperature a thermal conductivity of similar to 20 W. (m. K)(-1) and a Vickers hardness of similar to 4.5 GPa were determined. The material attained Young's modulus, four-point bending strength and fracture toughness of similar to 294 GPa, similar to 443 MPa, and similar to 5.9 MPa. m(1/2), respectively. The nanolayered grains with a mean grain size of 17 mu m contributed to the damage tolerance of this ceramic. Quenching from 600 degrees, 800 degrees, and 1000 degrees C into water at room temperature resulted in decrease in bending strength from 443 MPa for the as-synthesized Nb(2)AlC to 391, 156, and 149 MPa, respectively. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32569]  |
| 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 | W. Zhang,N. Travitzky,C. F. Hu,et al. Reactive Hot Pressing and Properties of Nb(2)AlC[J]. Journal of the American Ceramic Society,2009,92(10):2396-2399. |
| APA | W. Zhang,N. Travitzky,C. F. Hu,Y. C. Zhou,&P. Greil.(2009).Reactive Hot Pressing and Properties of Nb(2)AlC.Journal of the American Ceramic Society,92(10),2396-2399. |
| MLA | W. Zhang,et al."Reactive Hot Pressing and Properties of Nb(2)AlC".Journal of the American Ceramic Society 92.10(2009):2396-2399. |
入库方式： OAI收割
来源：金属研究所
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