Comparison of Two Powder Processing Techniques on the Properties of Cu-NbC Composites

B. D., Long and R., Othman and Hussain, Zuhailawati and M., Umemoto (2014) Comparison of Two Powder Processing Techniques on the Properties of Cu-NbC Composites. Advances in Materials Science and Engineering, 2014 (160580). pp. 1-6. ISSN 1687-8434

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Abstract

An in situCu-NbC compositewas successfully synthesized fromCu,Nb, and C powders using ball milling and high pressure torsion (HPT) techniques. The novelty of the new approach, HPT, is the combination of high compaction pressure and large shear strain to simultaneously refine, synthesize, and consolidate composite powders at roomtemperature.The HPTed Cu-NbC composite was formed within a short duration of 20 min without Fe contamination from the HPT’s die. High porosity of 3–9%, Fe and niobium oxidations, fromgrindingmedia and ethanol during ball milling led to low electrical conductivity of the milled Cu-NbC composite. The electrical conductivity of the HPTed Cu-NbC composite showed a value 50% higher than that of milled Cu-NbC composite of the same composition.

Item Type:	Article
Subjects:	T Technology > TN Mining Engineering. Metallurgy > TN1-997 Mining engineering. Metallurgy
Divisions:	Kampus Kejuruteraan (Engineering Campus) > Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral (School of Material & Mineral Resource Engineering) > Article
Depositing User:	Mr Noorazilan Noordin
Date Deposited:	23 Jan 2018 01:58
Last Modified:	23 Jan 2018 01:58
URI:	http://eprints.usm.my/id/eprint/38473

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