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Updated: Jan 10, 2026

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通过变形增强扩散来冷结合与铜

Per Erik Vullum^1,2, Ambra Celotto³, Øystein Grong⁴

¹SINTEF Industry, 7034, Trondheim, Norway.

Scientific reports

|November 25, 2025

概括

铜和等不相似的金属之间在室温下可以形成机械强的键. 这是通过高塑性变形和拉伸率实现的,使空隙驱动的扩散和金属间化合物形成成为可能.

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.
表面工程是什么?表面工程是什么?

背景情况:

不同金属的冷结合避免了受热影响的区域和不必要的金属间层.
在室温下,热扩散是最小的,这给传统的粘合方法带来了挑战.

研究的目的:

为了证明在室温下不同金属之间形成机械强的键的可行性.
通过高塑性变形,阐明室温冷结合背后的机制.

主要方法:

利用两个不同的实验设置,实现铜和之间的冷结合.
使用现象学方程来建模过度空缺的形成和扩散动力学.
使用传输电子显微镜 (TEM) 分析结合机制.

主要成果:

在室温下,铜和之间成功形成了机械强的键.
高塑性变形和高拉伸率被确定为关键因素.
观察到空隙驱动的扩散和金属间化合物形成的证据.

结论:

不同金属的冷结合可以在室温下通过高塑性变形和拉伸率实现.
由空隙驱动的扩散,由高拉变率和低温增强,促进金属间化合物形成和键强度.
这些发现为连接不相似的金属而无热降解提供了一条途径.

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