| Zirconium Aluminum Carbides: New Precursors for Synthesizing ZrO2-Al2O3 Composites | |
| He, Ling-Feng1,2; Bao, Yi-Wang1; Zhou, Yan-Chun1 | |
| Corresponding Author | Zhou, Yan-Chun(yczhou@imr.ac.cn) |
| 2009-11-01 | |
| Source Publication | JOURNAL OF THE AMERICAN CERAMIC SOCIETY
 |
| ISSN | 0002-7820 |
| Volume | 92Issue:11Pages:2751-2758 |
| Abstract | ZrO2-Al2O3 nanocrystalline powders have been synthesized by oxidizing ternary Zr2Al3C4 powders. The simultaneous oxidation of Al and Zr in Zr2Al3C4 results in homogeneous mixture of ZrO2 and Al2O3 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 ZrO2 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 Al2O3 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. |
| Funding Organization | National Outstanding Young Scientist Foundation ; Natural Science Foundation of China ; Chinese Academy of Sciences |
| DOI | 10.1111/j.1551-2916.2009.03281.x |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Outstanding Young Scientist Foundation[59925208] ; National Outstanding Young Scientist Foundation[50125204] ; Natural Science Foundation of China[90403027] ; Natural Science Foundation of China[50832008] ; Chinese Academy of Sciences |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Ceramics |
| WOS ID | WOS:000271188400042 |
| Publisher | WILEY-BLACKWELL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/99146 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhou, Yan-Chun |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| Recommended Citation GB/T 7714 | He, Ling-Feng,Bao, Yi-Wang,Zhou, Yan-Chun. Zirconium Aluminum Carbides: New Precursors for Synthesizing ZrO2-Al2O3 Composites[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2009,92(11):2751-2758. |
| APA | He, Ling-Feng,Bao, Yi-Wang,&Zhou, Yan-Chun.(2009).Zirconium Aluminum Carbides: New Precursors for Synthesizing ZrO2-Al2O3 Composites.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,92(11),2751-2758. |
| MLA | He, Ling-Feng,et al."Zirconium Aluminum Carbides: New Precursors for Synthesizing ZrO2-Al2O3 Composites".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 92.11(2009):2751-2758. |
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