(四川大学金属材料系，成都 610065
国营建中化工总公司，宜宾 644000)
摘 要: 向工业纯铜中加入不同含量的锂能提高其300 ℃以下的低温抗氧化性，锂的最佳含量为0.0288%，这是由于在铜的表面生成一种致密度较高的LiCuO新相，阻碍或减缓空气中的氧在铜基体中的扩散所致；温度较高时其抗氧化性降低，锂含量越高抗氧化性能越差，锂易于在氧化膜的缺陷处富集，严重时会在氧化膜中及铜基体中形成大空洞或连成网状，从而降低其保护性。
关键字: 锂 工业纯铜 抗氧化性
（Department of Metal Materials, Sichuan University, Chengdu 610065, P. R. China
State-owned Jianzhong Chemical Company, Yibin 644000, P. R. China）
Abstract:Different contents of lithium added in the industrial pure copper can improve its anti-oxidizability at low temperature below 300 ℃ and the best content is 0.0288%, this is because a new material (LiCuO) is formed, dellaying the diffusing speed of oxygen in the copper. When the temperature is higher, the anti-oxidizability decreases with the increase of lithium content. Lithium is easy to deposit in the defects of the oxidizing film and linked up to be large cavities or net work, so the lithium decreases the protection from oxidation.
Key words: lithium; copper; anti-oxidization
