基于Sn的料中的Pd涂层厚度和Pd含量对料/Ni接头界面IMC形成和微观结构演变的影响
Chao-Hong Wang1, Chu-An Li1, Kuan-Ting Li1
1Department of Chemical Engineering, National Chung Cheng University, Chiayi 621301, Taiwan.
Materials (Basel, Switzerland)
|February 13, 2026
概括
锡基和/金属化之间的界面反应受和锡厚度的影响. 较厚的层和中的较高含量增强了界面稳定性,而较薄的锡层加快了反应.
科学领域:
- 材料科学 材料科学 材料科学
- 金工业是金工业的一个方面.
- 表面科学是一门学科.
背景情况:
- 了解界面反应对于可靠的电子包装至关重要.
- -金属化通常用于电子包装,因为其优良的性能.
- 基接剂在电子组装中被广泛使用.
研究的目的:
- 为了研究基于Sn的和260°C的Au/Pd/Ni金属化之间的界面反应.
- 确定和锡厚度对界面反应动力学和相位演变的影响.
- 分析中的含量对接口稳定性的影响.
主要方法:
- 不同厚度 (10-50微米) 的Sn层对具有不同Pd层厚度 (70 nm-1微米) 的Au/Pd/Ni基板的反应.
- 具有不同Pd含量 (0.1-1重量%) 的Sn-Pd和Sn-3Ag-Pd合剂与Ni基质的反应.
- 使用技术观察相位形成,进化和粒度形态的微结构分析.
主要成果:
- Pd和Ni层的快速溶解促进了 (Pd,Ni) Sn4的形成,随后是Ni3Sn4的形成,反应时间增加.
- 的厚度和含量显著影响了 (Pd,Ni) Sn 4 的稳定性,更高的数量增强了稳定性.
- 减少锡厚度加速了界面反应和相变,导致界面不那么稳定.
结论:
- 增加的厚度或中的含量可以提高 (Pd,Ni) Sn4 间金属化合物的稳定性.
- 减少锡的厚度加快了界面反应和相位转换,影响了整体关节的可靠性.
- 可以使用基于Sn-Pd-Ni相位图的局部界面平衡假设来预测界面反应行为.
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