Abstract

The wetting reaction between molten Sn and (011) Cu single crystal was investigated. Based on the electron backscattered diffraction technique, the preferential orientation relationships between the scallop-type Cu6Sn5 grains and (011) Cu single crystals were detected. The strong texture of Cu6Sn5 grains was formed on the normal direction although the Sn/(011) Cu couple was aged at 170 °C for 40 days. This indicates that the Cu6Sn5 grains do not desultorily form on the (011) Cu substrate for these scallop-type Cu6Sn5 grains.

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