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．
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.
出处
《腐蚀科学与防护技术》
CAS
CSCD
1998年第5期299-302,308,共5页
Corrosion Science and Protection Technology
基金
吉林省科技计划资助
