Improvement of high-temperature oxidation resistance of TiAi-based alloy by siliconizing treatment

被引：0

作者：

Xiong, HP ^{[1
]}

Li, XH ^{[1
]}

Mao, W ^{[1
]}

Li, JP ^{[1
]}

Ma, WL ^{[1
]}

Cheng, YP ^{[1
]}

机构：

[1] Beijing Inst Aeronaut Mat, Beijing 100095, Peoples R China

来源：

ACTA METALLURGICA SINICA | 2003年 / 39卷 / 01期

关键词：

TiAl-based alloy; Al-Si alloy melt; surface modification; oxidation resistance;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

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.

引用

页码：66 / 70

页数：5

共 14 条

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