| Ti_3Al氧化行为的电子理论研究 |
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| 引用本文： | 李文,钟声,关振中,张瑞林.Ti_3Al氧化行为的电子理论研究[J].腐蚀科学与防护技术,1998,10(5):51-60. |
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| 作者姓名： | 李文 钟声 关振中 张瑞林 |
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| 作者单位： | 中国科学院长春光学精密机械研究所，吉林大学 |
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| 摘 要： | 根据固体与分子经验电子理论分析计算了氧作用下Ti3Al合金各相的价电子结构.结果表明,Ti3Al固溶氧使其键结构呈更严重的各向异性,导致Ti3Al脆性加剧;在氧含量较高时,氧化物TiO2的形成将导致更加恶劣的脆性,而形成最强键nA较大、热稳定性较高的Al2O3将会有好的抗氧化性.进而也提出了一些提高Ti3Al抗氧化性的合金化途径.
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| 关 键 词： | Ti_3Al氧化行为 价电子结构 脆性 |
| 收稿时间： | 1998-09-25 |
| 修稿时间： | 1998-09-25 |
ELECTRON THEORY STUDY ON THE OXIDATION BEHAVIOR OF Ti 3Al |
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| LI Wen,ZHONG Sheng,GUAN Zhenzhong.ELECTRON THEORY STUDY ON THE OXIDATION BEHAVIOR OF Ti 3Al[J].Corrosion Science and Protection Technology,1998,10(5):51-60. |
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| Authors: | LI Wen ZHONG Sheng GUAN Zhenzhong |
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| Abstract: | According to the EET, the valence electron structures of Ti 3Al alloy effected by oxygen have been calculated . The results showed that the bond structres of Ti 3Al alloy were very seriously anisotropic due to the dissolved oxygen in crystal cell of Ti 3Al,which resulted in very serious embrittlement . The formation of TiO 2 is more harmful in forms of ductility and oxidation resistance than that of Al 2O 3 with possessed stronger bond and higher heat stability. The measures to improve oxidation resistance of Ti 3Al by alloying are proposed. |
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| Keywords: | Ti 3Al oxidation behaviour valence electron structures embrittlement |
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