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| 掺杂Nb2O5对自生Al2O3强化TiAl复合材料结构的影响 | |
| 引用本文： | 王芬,安世武,范志康,朱建锋.掺杂Nb2O5对自生Al2O3强化TiAl复合材料结构的影响[J].稀有金属材料与工程,2006,35(11):1744-1747. |
| 作者姓名： | 王芬 安世武 范志康 朱建锋 |
| 作者单位： | 1. 陕西科技大学,陕西,咸阳,712081;西安理工大学,陕西,西安,710048 2. 陕西科技大学,陕西,咸阳,712081 3. 西安理工大学,陕西,西安,710048 |
| 基金项目： | 国家自然科学基金;陕西科技大学校科研和校改项目 |
| 摘 要： | 采用原位反应热压法制备了自生Al2O3增强TiAl间金属化合物复合材料，通过第三元素（氧化铌）掺杂的形式，对其进行强化研究。采用DTA结合XRD分析对其反应过程进行了探讨。SEM，XRD及其它测试分析显示，引入氧化铌使铝热反应生成了更高的热能，材料能够在较低的温度下烧结。同时，Nb2O5的掺入对基体相生成比例（TiAl：Ti3Al）有一定的调控作用，也使材料中的自生氧化铝成分增强，对材料结构及性能产生了较大影响。 |
| 关 键 词： | 掺杂Nb2O5 自生Al2O3 TiAl复合材料 强韧化 |
| 文章编号： | 1002-185X(2006)11-1744-04 |
| 收稿时间： | 2005-11-14 |
| 修稿时间： | 2005年11月14 |
Effect of Doping Nb2O5 on Microstructure of Autogeny Al2O3 Reinforced of TiAI Composite |
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| Wang Fen,An Shiwu,Fan Zhikang,Zhu Jianfeng.Effect of Doping Nb2O5 on Microstructure of Autogeny Al2O3 Reinforced of TiAI Composite[J].Rare Metal Materials and Engineering,2006,35(11):1744-1747. | |
| Authors: | Wang Fen An Shiwu Fan Zhikang Zhu Jianfeng |
| Abstract: | Spontaneous Al2O3 reinforced TiAl composite was prepared by reaction synthesis with hot pressing. The effect of doping Nb2O5 on microstructure was investigated as well. Adopting DTA, XRD analysis, their reaction courses were analysed and discussed. SEM, XRD, metallography analysis and other test showed that it is niobium oxide improved aluminium thermal reaction and released much higher energy which made the composite could be sintered under lower temperature. Meanwhile, the doping of Nb2O5 has a function to control and alter the proportion of the matrix (TiAl: Ti3Al)phase, strengthen the forming of spontaneous alumina composition in the material, and produce greater influence on the microstructure. |
| Keywords: | doping Nb2O5 spontaneous alumina TiAl composite reinforcing and toughening |
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