Abstract
Nanostructured Cu98Cr2–W composite powder was synthesized by high-energy ball milling and consolidated by spark plasma sintering (SPS). For comparison, pure Cu and Cu98Cr2 composite were also prepared under similar condition. Phase and microstructural characterization was carried out by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Hardness, wear property and electrical conductivity of the composite was evaluated and compared with pure Cu and Cu98Cr2 composite. The Cu98Cr2–W composite, show ~5% and ~21% higher hardness compared to Cu98Cr2 and pure Cu respectively. It also shows significant improvement in wear property and electrical conductivity, which makes the newly developed composite a potentially better candidate for high voltage circuit breaker application over existing Cu–Cr based composites.
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