| Ti-22Al-26Nb合金的高温氧化行为 |
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| 引用本文： | 张学军,赵书彦,高春香,王 蕾,王淑菊,张 英. Ti-22Al-26Nb合金的高温氧化行为[J]. 稀有金属材料与工程, 2009, 38(12): 2183-2186 |
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| 作者姓名： | 张学军 赵书彦 高春香 王 蕾 王淑菊 张 英 |
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| 作者单位： | 沈阳化工学院,辽宁,沈阳,110142 |
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| 基金项目： | 辽宁省高等学校科学研究项目，沈阳化工学院博士科研启动基金 |
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| 摘 要： | 采用热重法研究Ti-22Al-26Nb合金在800和900 ℃的高温氧化行为.利用X射线衍射分析(XRD)、扫描电镜(SEM)对氧化膜的相组成和形貌进行分析.结果表明:在氧化初期该合金遵循抛物线规律,而20 h以后,合金的氧化动力学符合直线规律.氧化后的产物主要由TiO_2、AlNbO_4和Nb_2TiO_7组成,氧化膜出现了分层结构且氧化温度愈高,分层愈明显.
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| 关 键 词： | 高温氧化 Nb的影响 |
| 收稿时间： | 2008-11-25 |
Oxidation Behavior of Ti-22Al-26Nb Alloy at High Temperatures |
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| Zhang Xuejun,Zhao Shuyan,Gao Chunxiang,Wang Lei,Wang Shuju and Zhang Ying. Oxidation Behavior of Ti-22Al-26Nb Alloy at High Temperatures[J]. Rare Metal Materials and Engineering, 2009, 38(12): 2183-2186 |
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| Authors: | Zhang Xuejun Zhao Shuyan Gao Chunxiang Wang Lei Wang Shuju Zhang Ying |
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| Affiliation: | Shenyang Institute of Chemical Technology, Shenyang 110142, China |
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| Abstract: | High-temperature oxidation behavior of Ti-22Al-26Nb alloy was studied by thermogravimetry at 800 and 900℃. X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM) were employed to characterize the phase composition and morphology of oxide films. Results show that the oxidation of the alloy was parabolic at the transient stage, while it was approximately linear from 20 h to the end of the oxidation. Oxides mainly composed of TiO_2, AlNbO_4 and Nb_2TiO_7, and the oxide scale was stratified, which became more obvious with oxidation temperature increasing. |
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| Keywords: | Ti-22Al-26Nb Ti-22Al-26Nb high temperature oxidation effect of Nb |
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