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2015 | 127 | 4 | 1045-1047
Article title

An Evaluation of Cu-B₄C Composites Manufactured by Powder Metallurgy

Content
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Languages of publication
EN
Abstracts
EN
In this study, the influences of B₄C ratios on some mechanical and physical properties such as relative density, microhardness and electrical properties of cold pressed Cu-B₄C composites were investigated. Curve fitting is applied for the estimation of electrical conductivity. Commercial copper powders with 40 μm particle size were reinforced with B₄C, with particle size of 40 μm, at ratios of 1, 2, 3 wt.%, for improving mechanical properties of copper used as electrical conductor. Cu-B₄C composites have been fabricated by powder sintering process at a temperature of 900°C for 2 h. The presence of Cu and B₄C, which are dominant components in the sintered composites, were confirmed by X-ray diffraction analysis technique and SEM-EDS. Scanning electron microscope (SEM-EDS) has shown that B₄C particles are distributed homogenously in the copper matrix. The relative densities of Cu and Cu-B₄C composites, sintered at 900°C, ranged from 95.7 to 91.6%. Microhardness of composites ranged from 84.5 to 94.6 HB. It was observed that cold pressed Cu-1 wt.% B₄C composites revealed promising physical properties. Results of electrical conductivity measurement of Cu-B₄C composite material are compared to the results of the model and the overall accuracy level above 96% is obtained.
Keywords
EN
Contributors
author
  • Sakarya University, Engineering Faculty, Department of Metallurgy and Materials Engineering, Esentepe Campus, Serdivan, Sakarya
author
  • Sakarya University, Engineering Faculty, Department of Metallurgy and Materials Engineering, Esentepe Campus, Serdivan, Sakarya
author
  • Sakarya University, Engineering Faculty, Department of Electrical and Electronic Engineering, Esentepe Campus, Serdivan, Sakarya
author
  • Sakarya University, Engineering Faculty, Department of Metallurgy and Materials Engineering, Esentepe Campus, Serdivan, Sakarya
author
  • Sakarya University, Engineering Faculty, Department of Metallurgy and Materials Engineering, Esentepe Campus, Serdivan, Sakarya
author
  • Sakarya University, Engineering Faculty, Department of Metallurgy and Materials Engineering, Esentepe Campus, Serdivan, Sakarya
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv127n4050kz
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