Zirconium Aluminum Carbides: New Precursors for Synthesizing ZrO(2)-Al(2)O(3) Composites
文献类型：期刊论文
| 作者 | L. F. He ; Y. W. Bao ; Y. C. Zhou |
| 刊名 | Journal of the American Ceramic Society
 |
| 出版日期 | 2009 |
| 卷号 | 92期号:11页码:2751-2758 |
| 关键词 | x-ray-diffraction si-c ceramics crystal-structure mechanical-properties layered carbide thermoelectric properties fracture-toughness martensitic nucleation al2o3-zro2 composites phase-transformation |
| ISSN号 | 0002-7820 |
| 中文摘要 | ZrO(2)-Al(2)O(3) nanocrystalline powders have been synthesized by oxidizing ternary Zr(2)Al(3)C(4) powders. The simultaneous oxidation of Al and Zr in Zr(2)Al(3)C(4) results in homogeneous mixture of ZrO(2) and Al(2)O(3) at nanoscale. Bulk nano- and submicro-composites were prepared by hot-pressing as-oxidized powders at 1100 degrees-1500 degrees C. The composition and microstructure evolution during sintering was investigated by XRD, Raman spectroscopy, SEM, and TEM. The crystallite size of ZrO(2) in the composites increased from 7.5 nm for as-oxidized powders to about 0.5 mu m at 1500 degrees C, while the tetragonal polymorph gradually converted to monolithic one with increasing crystallite size. The Al(2)O(3) in the composites transformed from an amorphous phase in as oxidized powders to theta phase at 1100 degrees C and alpha phase at higher temperatures. The hardness of the composite increased from 2.0 GPa at 1100 degrees C to 13.5 GPa at 1400 degrees C due to the increase of density. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31961]  |
| 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. F. He,Y. W. Bao,Y. C. Zhou. Zirconium Aluminum Carbides: New Precursors for Synthesizing ZrO(2)-Al(2)O(3) Composites[J]. Journal of the American Ceramic Society,2009,92(11):2751-2758. |
| APA | L. F. He,Y. W. Bao,&Y. C. Zhou.(2009).Zirconium Aluminum Carbides: New Precursors for Synthesizing ZrO(2)-Al(2)O(3) Composites.Journal of the American Ceramic Society,92(11),2751-2758. |
| MLA | L. F. He,et al."Zirconium Aluminum Carbides: New Precursors for Synthesizing ZrO(2)-Al(2)O(3) Composites".Journal of the American Ceramic Society 92.11(2009):2751-2758. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。