Oxidation Behavior of a Ti(3)AlC(2)/TiB(2) Composite at 1000 degrees-1400 degrees C in Air
文献类型：期刊论文
| 作者 | M. S. Li ; C. Li ; J. J. Li ; Y. C. Zhou |
| 刊名 | Journal of the American Ceramic Society
 |
| 出版日期 | 2010 |
| 卷号 | 93期号:2页码:554-560 |
| 关键词 | high-temperature oxidation ternary carbide ti3alc2 tin+1alxn n=1-3 oxide scale microstructures coatings system |
| ISSN号 | 0002-7820 |
| 中文摘要 | The oxidation behaviors of a Ti(3)AlC(2)/20(vol%)TiB(2) composite, synthesized by means of in situ reactions of Ti, Al, graphite, and B(4)C powder mixtures under hot pressing, have been investigated at 1000 degrees-1400 degrees C in air. The Ti(3)AlC(2)/20TiB(2) composite followed the logarithmic oxidation law, and had a lower oxidation rate than the matrix Ti(3)AlC(2). During the oxidation at 1000 degrees-1400 degrees C, a continuous Al(2)O(3) formed on the composite, meanwhile other different oxides formed on the top surface of the Al(2)O(3) layer, depending on the oxidation temperature: discontinuous alpha-TiO(2) at below 1200 degrees C, mixture of Al(2)TiO(5) and TiO(2) at 1300 degrees C, and continuous Al(2)TiO(5) at 1400 degrees C. The selective oxidation of Al occurred at the oxide/substrate interface through inward diffusion of oxygen, and TiO(2) overgrew the Al(2)O(3) layer to form coarse grains through outward diffusion of titanium ions. When the temperature was above 1280 degrees C, Al(2)TiO(5) appeared due to a eutectic reaction between TiO(2) and Al(2)O(3). The incorporation of TiB(2) promoted the generation of great numbers of voids at the Al(2)O(3)/substrate interface and in the Al(2)O(3) inner layer, which is proposed as being the main reason for the Ti(3)AlC(2)/20TiB(2) composite to follow a logarithmic oxidation law. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31224]  |
| 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 | M. S. Li,C. Li,J. J. Li,et al. Oxidation Behavior of a Ti(3)AlC(2)/TiB(2) Composite at 1000 degrees-1400 degrees C in Air[J]. Journal of the American Ceramic Society,2010,93(2):554-560. |
| APA | M. S. Li,C. Li,J. J. Li,&Y. C. Zhou.(2010).Oxidation Behavior of a Ti(3)AlC(2)/TiB(2) Composite at 1000 degrees-1400 degrees C in Air.Journal of the American Ceramic Society,93(2),554-560. |
| MLA | M. S. Li,et al."Oxidation Behavior of a Ti(3)AlC(2)/TiB(2) Composite at 1000 degrees-1400 degrees C in Air".Journal of the American Ceramic Society 93.2(2010):554-560. |
入库方式： OAI收割
来源：金属研究所
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