研究了纯铝、普通铝硅合金和新型多组元铝合金的增黏和泡沫化特性、这三者加入Ca增黏后的物相组成和发泡后的气泡壁微观组织以及三者熔体的表面张力.结果表明:Ca加入后,经过搅拌形成的大量弥散分布的细小Al-Ca中间化合物颗粒快速增加了纯铝以及新型多组元铝合金熔体的黏度,而Ca加入普通铝硅合金中与Si等元素形成较大的颗粒,因而增黏效果不如前.两者;Ca的加入也显著降低新型多组元铝合金和纯铝熔体的表面张力,普通铝硅合金降低不多;在相同的表观黏度下,表面张力的差异是引起纯铝、普通铝硅合金、新型多组元铝合金等三种熔体泡沫化特性差异的主要原因.
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