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

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

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Official URL: http://www.hindawi.com/journals/amse/2014/160580/

Abstract

An in situ Cu-NbC composite was successfully synthesized from Cu, 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 room temperature. 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, from grinding media 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
Uncontrolled Keywords: Two Powder Processing Techniques; Cu-NbC Composites
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 10 Jan 2015 14:51
Last Modified: 07 Jul 2017 05:07
URI: http://eprints.um.edu.my/id/eprint/11830

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