刘念,陈卓,吴栅,孙家杰,谢志雄,董仕节

• 1:湖北工业大学绿色轻工材料湖北省重点实验室
• 2:武汉轻工大学机械工程学院

摘要(Abstract)：

研究了不同含量的Mg对Al-3Ga-3In-3Sn铸态铝合金水解产氢性能的影响，采用X射线衍射(XRD)、扫描电镜(SEM)和能谱仪(EDS)分析了铝合金的显微组织和物相结构。结果表明：Mg添加导致铝合金析出Mg_2Sn新相，Al晶粒得到明显细化，由柱状变为棒状或粒状，Al晶界相由带状转变为花瓣状，同时铝合金表面分布大量裂纹缺陷。Mg含量为0.5%时铝合金的产氢性能最好，1 g的Al-3Ga-3In-3Sn-0.5Mg铝合金在温度为80℃条件下反应30 min,最大产氢量1300 mL、产氢速率达217 mL/(min·g),产氢转化率可达95.7%;当含Mg量低于2%时，Al晶粒周围低熔点晶界相和Mg_2Sn与Al形成原电池是铝合金提高产氢性能的主要因素；Mg含量超过2%后，产氢速率下降主要是由于随着Mg含量增加，铝合金的晶界相形态发生改变，与水接触面积减少，降低了其水解反应活性所致。

关键词(KeyWords)： 富铝合金;水解;产氢性能;活化

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51771071)

作者(Author): 刘念,陈卓,吴栅,孙家杰,谢志雄,董仕节

DOI: 10.13289/j.issn.1009-6264.2022-0144

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