稀土元素Ce对纯铜导电性及力学性能的影响

Effect of Ce on Electrical Conductivity and Mechanical Property of the Pure Copper

在纯铜中加入稀土元素Ce ,研究不同含量Ce及不同保温时间对纯铜的导电性、抗拉强度、硬度、耐磨性等的影响。研究发现在纯铜中加入Ce起到净化、去杂质的作用 ,改善纯铜的导电性 ;也可使晶粒细化 ,改善纯铜的抗拉强度及其它力学性能。且熔炼时加入稀土后的保温时间要适当。在试验的条件下保温时间以 3 0min为宜 ,稀土Ce的最佳加入量w为 0 .0 2 %。

The effects of different contents of Ce and heat-preserving time on the properties of the pure copper were studied. It is showed that Ce could purify melt, improve electrical conductivity, refine the grain, and improve the tensile strength of the pure copper.