A study, led by Tingting Zuo, was based on the idea of in-situ growth, and a series of Cu/Gr composites with improved interfaces were prepared by vacuum hot press sintering. Combined with cold-drawing and heat-treatment processes, composite wires with extremely high strength and electrical conductivity at both room and elevated temperatures were obtained.
The findings are published in the journal CES Transactions on Electrical Machines and Systems.
The temperature coefficient of resistance (TCR) of the wires was drastically reduced to 0.0035/°C, which makes the wires exhibit low resistivity at higher temperatures.
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