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加载速率对SAC系列焊点蠕变性能影响的研究

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摘要 随着微电子封装技术的不断发展,焊点的形式以及焊点所用无铅钎料的种类愈发繁多,从而使得对焊点力学性能的考察尤为重要。在所有对焊点性能的考察中抗蠕变性能是一项重要的考察项目,本篇文章通过实验和有限元数值模拟两种方法加载速率对焊点抗蠕变性能的影响。对SAC系列钎料焊点进行纳米压痕实验及模拟,获得载荷-深度曲线、时间-深度曲线,以及时间-蠕变速率曲线。结果表明:蠕变的速率并不是恒定的,随着加载速率的增大,钎料的蠕变程度以及蠕变速率依次增大,并逐渐减小,最终趋近于零。
出处 《科技视界》 2016年第12期6-9,共4页 Science & Technology Vision
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参考文献12

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