稀土元素对键合金丝组织与性能的影响

摘要

研究了稀土元素Eu对金丝再结晶温度、组织、力学性能以及热影响区(HAZ)的作用.研究结果表明,添加一定量的Eu可以:①提高金丝的再结晶温度;②细化金丝的晶粒;③增加金丝的强度;④减小金丝的HAZ长度,即添加适当的稀土元素对于开发高强度低弧度键合金丝有积极作用.%In this paper, effects of rare earth element Eu on recrystallization temperature, structure, mechanical properties and heat-affected zone (HAZ) of gold bonding wire were studied. The results showed that adding moderate dopants Eu to 5N gold can improve properties of gold wire, e. g.: 1 ) raising the recrystallization temperature; 2) reducing the grain size; 3 ) increasing the strength; 4) reducing the length of HAZ. So adding moderate dopants play a positive role on developing gold bonding wires, with high -strength and low -radians when bonding.