Characterization of electrical conductivity of porous metal fiber sintered sheet using four-point probe method

Zhou, Wei, Tang, Yong, Song, Rong, Jiang, Lelun, Hui, K. S. and Hui, K. N. (2012) Characterization of electrical conductivity of porous metal fiber sintered sheet using four-point probe method. Materials and Design, 37. pp. 161-165. ISSN 0261-3069

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Abstract

Novel porous metal fiber sintered sheets (PMFSSs) with different porosities were fabricated by sintering copper fibers. Using four-point probe method, comparative study was conducted to investigate the effects of probe spacing, porosity, and sintering condition on the electrical conductivity of PMFSS. Our experimental results showed that probe spacing plays an important role in determining the electrical conductivity. Uniform probe spacing was adopted in order to reduce the error caused by non-uniformity of probe spacing. The measured electrical conductivity was found to decrease with increasing porosity ranging from 70% to 90% for the PMFSS produced under the same sintering condition. Our experimental results were found to agree well with the theoretical prediction by Liu's model for the PMFSS with different porosities. The effect of sintering condition on electrical conductivity was also investigated. It was revealed that higher sintering temperature or longer holding time yields higher electrical conductivity of PMFSS.

Item Type: Article
Uncontrolled Keywords: fibers and filaments,sintering,electrical properties
Faculty \ School: Faculty of Science > School of Mathematics
Related URLs:
Depositing User: Pure Connector
Date Deposited: 04 Oct 2016 12:02
Last Modified: 22 Apr 2020 01:47
URI: https://ueaeprints.uea.ac.uk/id/eprint/60689
DOI: 10.1016/j.matdes.2011.12.046

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