Venugopal T, Rao K Prasad, Murty B S
Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, India.
J Nanosci Nanotechnol. 2007 Jul;7(7):2376-81. doi: 10.1166/jnn.2007.418.
The Cu-W bulk nanocomposites of different compositions were successfully synthesized by high-energy ball milling of elemental powders. The nanocrystalline nature of the Cu-W composite powder is confirmed by X-ray diffraction analysis, transmission electron microscopy, and atomic force microscopy. The Cu-W nanocomposite powder could be sintered at 300-400 degrees C below the sintering temperature of the un-milled Cu-W powders. The Cu-W nanocomposites showed superior densification and hardness than that of un-milled Cu-W composites. The nanocomposites also have three times higher hardness to resistivity ratio in comparison to Oxygen free high conductivity copper.
通过对元素粉末进行高能球磨，成功合成了不同成分的铜钨块状纳米复合材料。通过X射线衍射分析、透射电子显微镜和原子力显微镜证实了铜钨复合粉末的纳米晶性质。铜钨纳米复合粉末可以在比未球磨的铜钨粉末烧结温度低300 - 400摄氏度的温度下进行烧结。与未球磨的铜钨复合材料相比，铜钨纳米复合材料表现出优异的致密化和硬度。与无氧高导电铜相比，该纳米复合材料的硬度与电阻率之比也高出三倍。
