本文是关于在15≤R(稀土元素)≤20克分子％、52≤Co≤77克分子％、8≤Cu≤30克分子％的合金中添加0.31～1.54克分子％锡的永磁合金。由于添加了0.31～1.54克分子％锡,合金的最大磁能积提高。实例如下: 1.成分为Ce_(1-0)Co_(4 25)Cu_(0.6)的试样在以3毫米/分的区移动速度进行区域熔化的情况,添加锡时(BH]_(max)的增加示于图1。由图1可见,低于0.31克分子％,添加锡的效果不显著;高于1.54克分子％,其 This article is about permanent magnet alloys added with 0.31 to 1.54 mol% of tin in an alloy of 15≤R (rare earth element) ≤20 mol%, 52≤Co≤77 mol%, and 8≤Cu≤30 mol%. Due to the addition of 0.31 ~ 1.54 mol% tin, the maximum energy product of the alloy increases. Examples are as follows: 1. In the case of a sample having a composition of Ce_ (1-0) Co_ (4 25) Cu_ (0.6) in a region melted at a zone moving speed of 3 mm / min, ) Is shown in Figure 1. It can be seen from Figure 1, below 0.31 mol%, the effect of adding tin is insignificant; above 1.54 mol%, which