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Effect of Rare Earth Metals on the Properties of Zn-20Sn High-Temperature Lead-Free Solder by Jun Tian; Chunfu Hong; Lihua Hong; Xiaohui Yan; Pinqiang Dai is a Engineering article available to read on EtoBox.

What is Effect of Rare Earth Metals on the Properties of Zn-20Sn High-Temperature Lead-Free Solder about?

Cerium-lanthanum mixed rare earth (RE) (0.5 wt.%) was added to Zn-20Sn high-temperature lead-free solder to study the effect of RE on the solder properties. The Zn-20Sn-0.5RE solder has a better corrosion resistance than that of Zn-20Sn alloy. RE addition increases the c-Cu 5 Zn 8 layer thickness, promotes growth of a e-CuZn 5 layer shaped like bamboo shoots, and increases the roughness of the e-CuZn 5 layer, which increases the shear strength of the solder joints. Compared with the Zn-20Sn alloy, the creep resistance of the Zn-20Sn-0.5RE solder was improved after soldering. The indentation hardness increases in an order of Zn-20Sn-0.5RE solder, Zn-20Sn solder, e-CuZn 5 layer, and c-Cu 5 Zn 8 layer.

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Author

Jun Tian; Chunfu Hong; Lihua Hong; Xiaohui Yan; Pinqiang Dai

Published

2019

Language

EN

Field

Engineering (Physical Sciences)