Bonding of Mg and Al with Mg-Al eutectic alloy and its application in aluminum coating on magnesium
Bonding of Mg and Al with Mg-Al eutectic alloy and its application in aluminum coating on magnesium
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DOI：
10.1016/j.jallcom.2008.03.107
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发表时间：
2009-03-05
影响因子：
6.2
通讯作者：
Liu, Fencheng
中科院分区：
文献类型：
--
作者：
Li, Xianrong;Liang, Wei;Liu, Fencheng
以镁铝共晶合金为焊料，在450℃的气氛中，采用不同的压力，成功地实现了镁铝的连接。用扫描电子显微镜对镁铝接头的微观组织进行了表征，用能谱仪对接头成分进行了分析，用弯曲试验测定了接头的结合强度。结果表明，随着保压压力的增加，镁铝接头的结合强度有所提高，但保压时间对其影响不大。为了展示镁铝共晶合金焊料的潜在应用，采用该工艺在镁基板上涂覆一层铝箔，并通过电化学测试对其耐蚀性进行了评价。结果表明，镀铝镁板材的耐蚀性显著提高，表现出与铝板材相似的腐蚀行为。(C)2008爱思唯尔B.V.保留所有权利。
Magnesium and aluminum were bonded successfully by using Mg-Al eutectic alloy as the solder under different pressures at 450 degrees C in atmosphere. The microstructures of the Mg/Al joints were characterized by SEM, the composition analyzed by EDS, and their bond strengths measured by the bend test. The results show that the bond strength of these Mg/Al joints is improved with increasing of holding pressure, while the holding time has no much effect on it. To demonstrate the potential application of the Mg-Al eutectic alloy solder, magnesium plate was coated with aluminum foil by this process and its corrosion resistance was evaluated by electrochemical test. It shows that the corrosion resistance of the magnesium plate with aluminum coating was remarkably improved, which exhibits a similar corrosion behavior to that of aluminum. (c) 2008 Elsevier B.V. All rights reserved.