(中南工業(yè)大學材料科學與工程系， 長沙 410083)
摘 要: 在實驗的基礎(chǔ)上研究了低膨脹高導(dǎo)熱Cu/FeNi粉末冶金復(fù)合材料膨脹性能的影響因素。實驗表明，隨著Cu含量增加、燒結(jié)溫度升高、軋制率減小，材料的膨脹系數(shù)增加；而FeNi粒度對材料膨脹系數(shù)的影響較復(fù)雜。這是由 FeNi和Cu之間的相互配比、 相互擴散、FeNi合金的特別性質(zhì)以及FeNi、Cu在復(fù)合材料中的分布狀態(tài)共同決定的。
關(guān)鍵字: Cu/FeNi 膨脹系數(shù) 擴散 網(wǎng)絡(luò) 軋制
（Department of Materials Science and Engineering,Central South University of Technology, Changsha 410083）
Abstract:On the basis of experiments, the affecting factors of the thermal expansion coefficient of low thermal expansion, high thermal conductivity composite Cu/FeNi made by powder metallurgy have been investigated. The experimental results show that, the thermal expansion of this material increases with the increase of rolling ratio, while the effect of the size of FeNi on it is more complicated. It is considered that, all properties above are determined by the ratio of Cu content to FeNi content, the diffusion between FeNi and Cu, the special properties of FeNi and the distrubution of FeNi and Cu in this composite.
Key words: Cu/FeNi thermal expansion diffusion network rolling ratio
