| 用热扩散方法在Ti-6Al-4V合金表面获得铝化物和硅化物涂层 |
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| 引用本文： | 张亚明,王卫林,周龙江,李铁藩,陈崇伟.用热扩散方法在Ti-6Al-4V合金表面获得铝化物和硅化物涂层[J].热加工工艺,1992(5). |
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| 作者姓名： | 张亚明 王卫林 周龙江 李铁藩 陈崇伟 |
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| 作者单位： | 中国科学院金属腐蚀与防护研究所
(张亚明，王卫林，周龙江，李铁藩)，中国科学院金属腐蚀与防护研究所(陈崇伟) |
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| 摘 要： | 采用固体粉末包装热扩散方法,对Ti-6Al-4V合金分别进行表面渗铝和渗硅处理,以提高该合金的抗高温氧化性能。结果表明:Ti-6Al-4V合金表面形成的铝化物涂层的金相组织为单层结构,其上有少量贯穿裂纹存在;主要相结构是TiAl_3。而硅化物涂层的金相组织则为双层结构,外层较厚,呈柱状晶,由TiSi_2相组成;内层则较薄,由Ti_5Si_4相组成。表面渗铝和渗硅处理都可以大大提高Ti-6Al-4V合金的抗高温氧化性能。
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| 关 键 词： | 热扩散 Ti-6Al-4V 渗铝渗硅 表面涂层 |
Aluminized and Siliconized Coating Obtained on Surface of Ti-6Al-4V Alloy by Heat Diffusion Process |
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| Zhang yaming Wang Weilin Zhou Longjiang Li Tiefan Chen Chongwei.Aluminized and Siliconized Coating Obtained on Surface of Ti-6Al-4V Alloy by Heat Diffusion Process[J].Hot Working Technology,1992(5). |
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| Authors: | Zhang yaming Wang Weilin Zhou Longjiang Li Tiefan Chen Chongwei |
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| Affiliation: | Zhang yaming Wang Weilin Zhou Longjiang Li Tiefan Chen Chongwei |
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| Abstract: | Aluminizing and siliconizing were carried out for Ti-6Al-4V alloy by pack heat diffusion. The propose was to improve high temperature oxidation risistance of the alloy. The results shown that aluminized coating on the surface of Ti-6Al-4V alloy was mainly the phase of TiAl_3 showing single layer with a few of cracks through it. The microstructure of the siliconized coating had two layers. The external layer was the phase of TiSi_2, showing columnar crystal, the internal layer which was thiner than the external layer was identified as Ti_5Si_4. The high temperature oxidation risistance of Ti-6Al-4V alloy was improved remarkably by both aluminizing and siliconizing. |
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| Keywords: | heat diffusion Ti-6Al-4V aluminizing siliconizing surface coating |
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