接过程中固体Al溶解在液体Sn中的超声波:建模和方程,趋势预测,加速效应
Di Zhao1, Wenkang Du1, Shu Guo2
1State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbinxx 150001, China.
Ultrasonics sonochemistry
|November 15, 2024
概括
超声波显著增强了在液态锡中的溶解,使溶解速率常数增加了5.8倍. 这项研究量化了溶解行为,这对于设计低成本的陶/金属接应用至关重要.
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:
- 使用廉价,不活跃的器接陶/金属是可取的,但由于未定量基础金属溶解而受到阻碍.
- 了解 (Al) 在液态锡 (Sn) 中的溶解对于优化连接过程至关重要.
研究的目的:
- 为了研究和量化固体Al在液体Sn中的溶解行为,无论是否有超声波照射.
- 建立一个物理模型并推导Al溶解动力学方程.
- 阐明超声波影响Al溶解的机制.
主要方法:
- 在各种温度和Sn层厚度下,实验性地将固体Al溶解在液体Sn中.
- 纳恩斯特-布鲁纳原理应用于模拟溶解动力学.
- 分析气泡动力学,以了解超声波效应.
主要成果:
- 建立了一个物理模型和对Al度 (Ca) 和接时间的关系方程.
- 超声波显著增加了溶解速率常数 (K) 的5.8倍和最大Al度 (Ca) 的4.5倍在250°C.
- 在超声波下,溶解的激活能量减少了41%,表明溶解动力学得到了增强.
结论:
- 超声波极大地加快了Al在Sn中的溶解,与非超声波条件相比,降低了对温度的敏感性和Sn层厚度.
- 这些发现为超声波增强溶解提供了定量理解和机制解释.
- 这项研究提供了有价值的指导方针,用于设计有效的陶/金属接工艺,使用不活性.
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