以低熔点金属(Ga,In,Sn)作为合金元素,采用机械球磨法制备Al-In-Sn和Al-Ga-In-Sn合金.研究In和Sn的质量比以及Ga的含量对铝合金水解性能的影响.采用X射线衍射、扫面电镜和能谱等手段分析铝合金的成分和形貌.结果表明:Al-In-Sn三元合金主要由Al和两种金属间化合物In3Sn和InSn4组成.所有Al-In-Sn三元合金在室温下的水解活性都很低.当In和Sn的质量比为1:4时,三元合金具有最高的产氢性能.当Ga加入三元合金后,铝合金在室温下的水解活性得到极大的改善,这可能是由于Ga的加入一方面促使铝合金缺陷的产生,另一方面促进Ga-In3Sn-InSn4(Ga-In-Sn)共晶合金在铝合金表面的形成.Al原子能溶入该共晶合金并成为水解过程中的活性点.共晶合金的尺寸小及其在Al合金表面分布均匀是Al-Ga-In-Sn四元合金较强水解活性的主要原因.
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