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材料工程  2014 

搅拌针形状对搅拌摩擦加工制备CNTs/铝基复合材料均匀性的影响

DOI: 10.3969/j.issn.1001-4381.2014.01.014

Keywords: 搅拌摩擦加工,CNTs/铝基复合材料,搅拌针形状,均匀性

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Abstract:

采用搅拌摩擦加工技术(FSP)制备碳纳米管增强铝基(CNTs/Al)复合材料,研究了搅拌针形状对复合材料均匀性的影响。结果表明搅拌针形状影响到塑化材料的迁移路径和程度,导致复合材料宏观形貌和均匀性发生变化。相比柱形,锥形搅拌针周围金属温度高,挤压区易于扩张,抽吸-挤压效应较强,形成的中心区面积大且均匀性较好;双螺纹搅拌针由于在板材上下两端形成两个材料迁移通道,挤压区相互重叠,材料混合程度加强,中心区CNTs分布均匀性最好。

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