Deformability of Cu-W Composites with Addition of Cr, Ti Activated Elements
Deformability of Cu-W Composites with Addition of Cr, Ti Activated Elements
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添加 Cr、Ti 活化元素的 Cu-W 复合材料的变形性能
DOI：
10.1166/asl.2011.1388
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发表时间：
2011-03
影响因子：
--
通讯作者：
Liang, Shuhua
中科院分区：
文献类型：
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作者：
Zou, Juntao;Yang, Xiaohong;Liu, Gaofeng;Liang, Shuhua
Cu-W复合材料由于其难变形性而难以作为热沉广泛应用于微电子工业中。为了提高Cu-W复合材料的塑性，在W骨架中加入活化元素。研究了添加活性元素的铜钨复合材料热变形后的显微组织、硬度和电导率的变化。结果表明，添加Cr、Ti元素后，Cu/W复合材料获得了冶金结合界面，这种较高的界面结合强度能够抵抗变形过程中产生的剪切应力，且在700 °C时表现出良好的变形性能。复合材料的硬度随变形率的增加而增加，当变形率小于50%时，复合材料的导电率略有下降。
Cu-W composities are hard to be used widely as heat sinks in the microelectronic industry due to their difficultdeformabilty. In order to improve the plastic performance of the Cu-W composites, the activation elements wereadded in the W skeletons. The variation of microstructure, hardness and electrical conductivity of the Cu-Wcomposites with activated elements were studied after hot deformation. The results show that the metallurgical Cu/W interface is obtained after the addition of Cr, Ti elements, this higher interfacial bond strength can resist tothe shear stress emerged in the deformation, and these Cu-W composites exhibit good deformability at 700 °C. And the hardness of these composites increases with increasing the deformation ratio, and their electricalconductivity decreases slightly when the deformation ratio is below 50%.