| 表面渗硅处理提高钛铝基合金高温抗氧化性 |
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| 引用本文： | 熊华平,李晓红,毛唯,李建平,马文利,程耀永.表面渗硅处理提高钛铝基合金高温抗氧化性[J].金属学报,2003,39(1):66-70. |
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| 作者姓名： | 熊华平 李晓红 毛唯 李建平 马文利 程耀永 |
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| 作者单位： | 北京航空材料研究院,北京100095 |
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| 基金项目： | 航空基础科学基金99H21013资助项目 |
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| 摘 要： | 使用Al-Si合金熔体对钛铝基合金进行表面渗硅处理，在表层发生了不同程度的界面反应，生成成分比较不同的以Si,Ti,Al三元互为主的物相，表面渗硅处理可明显增强钛铝基合金的高温抗氧化性，使1173K，100h的恒温氧化后，表面涂层氧化生成致密的Si-Ti-Al-O复杂氧化物，而且表面涂层与TiAl基体之间还发生了一定程度的界面反应，生成Ti-Si及TiAl2化合物。对于1053K渗硅处理的试样，在恒温氧化过程中，表面Si-Ti-Al化合物的局部区域已经转化成为更加稳定的Ti-Si化合物。
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| 关 键 词： | 渗硅 钛铝基合金 Al－Si合金熔体 表面改性 抗氧化性 |
| 文章编号： | 0412-1961(2003)01-066-05 |
| 收稿时间： | 2002-02-04 |
| 修稿时间： | 2002年2月4日 |
IMPROVEMENT OF HIGH-TEMPERATURE OXIDATION RESISTANCE OF TiAl-BASED ALLOY BY SILICONIZING TREATMENT |
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| XIONG Huaping,LI Xiaohong,MAO Wei,LI Jianping,MA Wenli,CHENG Yaoyong.IMPROVEMENT OF HIGH-TEMPERATURE OXIDATION RESISTANCE OF TiAl-BASED ALLOY BY SILICONIZING TREATMENT[J].Acta Metallurgica Sinica,2003,39(1):66-70. |
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| Authors: | XIONG Huaping LI Xiaohong MAO Wei LI Jianping MA Wenli CHENG Yaoyong |
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| Affiliation: | Beijing Institute of Aeronautical Materials, Beijing 100095 |
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| Abstract: | Siliconizing treatment on TiAl-based alloy was conducted by Al-Si molten alloy. The interfacial reactions have occured between the TiAl-based alloy and the Al-Si molten alloy, resulted in the formation of phases mainly composed of elements of Si, Ti and Al. After isothermal oxidation at 1173 K for 100 h, these Si-Ti-Al phases are transformed into compacted oxides of Si-Ti-Al-O. Moreover, interfacial reactions forming compounds of Ti-Si and TiAl2. The high-temperature oxidation resistance of the TiAl-based alloy is greatly improved by the siliconizing treatment. For the sample siliconized at 1153 K, part of the Si-Ti-Al compound directly transformed into Ti-Si compound during the isothermal oxidation. |
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| Keywords: | TiAl-based alloy Al-Si alloy melt surface modification oxidation resistance |
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