以Sn-Zn合金为母合金,添加Ga元素,得到了新型的无铅焊料合金.测量了其熔点、硬度、剪切强度和可焊性等性能.研究发现,Ga元素的添加使焊料的熔点降低,熔程增大.焊料的硬度和剪切强度有所降低.焊料的铺展率增大,浸润角减小,提高了焊料的可焊性.通过实验研究确定了具有较好综合性能的焊料的成分范围.
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