کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1600370 | 1515880 | 2012 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Texture evolution and its effects on growth of intermetallic compounds formed at eutectic Sn37Pb/Cu interface during solid-state aging Texture evolution and its effects on growth of intermetallic compounds formed at eutectic Sn37Pb/Cu interface during solid-state aging](/preview/png/1600370.png)
The growth orientation of Cu6Sn5 intermetallic compounds (IMCs) formed at the eutectic Sn37Pb/polycrystalline Cu interface during solid-state aging was investigated. The results indicate that the interfacial Cu6Sn5 grains exhibit textured growth under solid-state conditions, and their preferred orientations are affected by the initial joint preparation conditions. Cu6Sn5 grains in the [0001] direction normal to the interface are stable in solid and molten Sn37Pb solder at 200 °C, but are rapidly consumed at 280 °C. This effect leads to the formation of different textures in the Cu6Sn5 layer during the solid-state aging treatment of joints formed at 200 and 280 °C. In addition, the influence of texture evolution on the growth of interfacial IMCs was evaluated. The results indicate that Sn diffusion is faster along the [0001] direction of the Cu6Sn5 crystal than along an angle of 25–45° to the [0001] direction; therefore, more IMCs are generated at the interface of the joints formed at 200 °C than at those formed at 280 °C under the same solid-state reaction conditions.
► We observe textured growth of interfacial Cu6Sn5 layer during solid-state aging.
► We explain the texture formation mechanism of interfacial Cu6Sn5 layer.
► The textural morphologies are determined by the initial joint preparation conditions.
► The textures of interfacial Cu6Sn5 grains affect the growth of interfacial IMCs.
Journal: Intermetallics - Volume 31, December 2012, Pages 177–185