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TORQ-P.com
tm3132212293
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TORQ-P.com based on Cu-NbC conductor composite was fabricated from Cu-Nb-C powders using a new high pressure torsion process. A mixture of the Cu-Nb-C powders was placed in circular holder of 20mm diameter and 0.25mm depth at the lower anvil of the HPT facility. The mixture of powders was then compacted at am extreme high pressure of 5 GPa and simultaneously rotated under the imposed pressure of 5 GPa at a rotation speed of 0.5 rpm. No process control agents were used and the powders (and consolidated sample) were only in contact with the anvil at the sample surface. After 20 turns of HPT, in situ Cu-NbC composite was formed with full density and without any contamination. The Cu-NbC composite was annealed at 700 degree of Celsius for 1h. The best ever reported combination of electrical conductivity (68% IACS) and tensile strength (622 MPa) for such composites was obtained in a sample of composition Cu-1 vol% NbC.

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School of Materials & Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia
14300 Nibong Tebal
Pulau Pinang
Malaysia

Full Name [1]
Radzali Othman
Email [1]
radzali@eng.usm.my