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首页> 外文期刊>Journal of Materials Engineering and Performance >Interfacial Reactions of Zn-Al Alloys with Na Addition on Cu Substrate During Spreading Test and After Aging Treatments
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Interfacial Reactions of Zn-Al Alloys with Na Addition on Cu Substrate During Spreading Test and After Aging Treatments

机译：扩展试验和时效处理后，在铜基体上添加钠的锌铝合金的界面反应

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摘要

Spreading tests for Cu substrate with Zn-Al eutectic-based alloys with 0.2, 0.5, and 1.0 wt.% of Na were studied using the sessile drop method in the presence of QJ201 flux. Spreading tests were performed for 1, 3, 8, 15, 30, and 60 min of contact, at the temperatures of 475, 500, 525, and 550 A degrees C. After cleaning the flux residue from solidified samples, the spreading area of Zn-Al + Na on Cu was determined in accordance with ISO 9455-10:2013-03. Selected, solidified solder-substrate couples were cross-sectioned and subjected to scanning electron microscopy of the interfacial microstructure. The experiment was designed to demonstrate the effect of Na addition on the kinetics of formation and growth of CuZn, Cu5Zn8, and CuZn4 phases, which were identified using x-ray diffraction and energy-dispersive spectroscopy analysis. The addition of Na to eutectic Zn-Al caused the spreading area to decrease and the thickness of intermetallic compound layers at the interface to reduce. Samples after the spreading test at 500 A degrees C for 1 min were subjected to aging for 1, 10, and 30 days at 120,170, and 250 A degrees C. The greater thicknesses of IMC layers were obtained for a temperature of 250 A degrees C. With increasing Na content in Zn-Al + Na alloys, the thickness reduced, which correlates to the highest value of activation energy for Zn-Al with 1% Na.
机译：在QJ201助熔剂存在的情况下，采用无滴法研究了含0.2、0.5和1.0 wt。％Na的Zn-Al共晶基合金对Cu基底的扩散测试。在475、500、525和550 A的温度下，对接触时间分别为1、3、8、15、30和60分钟进行了扩散测试。在清除固化样品中的助焊剂残留物后，铜上的Zn-Al + Na根据ISO 9455-10：2013-03确定。将选定的固化的焊料-衬底对横截面并进行界面显微结构的扫描电子显微镜检查。设计该实验是为了证明添加Na对CuZn，Cu5Zn8和CuZn4相的形成和生长动力学的影响，这些动力学已通过X射线衍射和能量色散光谱分析确定。向共晶Zn-Al中添加Na导致扩散面积减小，界面处的金属间化合物层厚度减小。在500 A的温度下进行1分钟铺展测试后的样品在120,170和250 A的温度下进行老化1、10和30天。在250 A的温度下获得更大的IMC层厚度随着Zn-Al + Na合金中Na含量的增加，厚度减小，这与含1％Na的Zn-Al的活化能的最大值有关。

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