Structure property relationship in a bulk Cu–Cr–W composite synthesized by high-energy ball milling and spark plasma sintering

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 diffra...

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Bibliographic Details
Published in:Materials chemistry and physics 2020-12, Vol.256, p.123708, Article 123708
Main Authors: Chakraborty, S., Bagala, R., Sikdar, K., Roy, D., Basumallick, A.
Format: Article
Language:English
Subjects:
Ball milling
Chromium
Circuit breakers
Copper
Electrical conductivity
Electrical resistivity
Hardness
Nanocomposites
Plasma sintering
Spark plasma sintering
Synthesis
Transmission electron microscopy (TEM)
Tungsten
Wear
Wear resistance
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Summary: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. •Bulk nanostructure Cu98Cr2–1W composite has been syntesized successfully by ball milling followed by SPS.•Addition of 1 wt% W to the base composite results in %5 and 44% increase in hardness and wear resistance than Cu98Cr2.•The present approach in the manuscript makes it a choice of material for high voltage electrical applications.
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2020.123708