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.
Venugopal
T
T
Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, India.
Rao
K Prasad
KP
Murty
B S
BS
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