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在实验的基础上研究了低膨胀高导热Ｃｕ／ＦｅＮｉ粉末冶金复合材料膨胀性能的影响因素。实验表明，随着Ｃｕ含量增加、烧结温度升高、轧制率减小，材料的膨胀系数增加；而ＦｅＮｉ粒度对材料膨胀系数的影响较复杂。这是由ＦｅＮｉ和Ｃｕ之间的相互配比、相互扩散、ＦｅＮｉ合金的特别性质以及ＦｅＮｉ、Ｃｕ在复合材料中的分布状态共同决定的。
Based on the experiments, the influencing factors on the expansion properties of low expansion and high thermal conductivity Cu / FeNi powder metallurgy composites were studied. Experiments show that as the Cu content increases, the sintering temperature increases, the rolling rate decreases, the expansion coefficient of the material increases; FeNi size of the material has a more complex expansion coefficient. This is determined by the mutual ratio between FeNi and Cu, mutual diffusion, the special properties of FeNi alloy and the distribution of FeNi and Cu in the composite.