Synthesis of Cu-W nanocomposite by high-energy ball milling.
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.
Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, India.
T
T
Venugopal
K Prasad
KP
Rao
B S
BS
Murty
D000497:Alloys / Q000737:chemistry; D003300:Copper / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D004735:Energy Transfer; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008669:Metallurgy / Q000379:methods*; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D011208:Powders; D013499:Surface Properties; D014414:Tungsten / Q000737:chemistry*
D000497:Alloys; D046911:Macromolecular Substances; D011208:Powders; D003300:Copper; D014414:Tungsten