Kumar, Anil and Kaur , Mandeep and Kumar , Rajeev and Ranjan Sengupta , Pinaki and Raman, Vasantha and Bhatia , Gopal and Sood, Kedar Nath (2009) Development of pitch-based carbon–copper composites. Journal of Materials Science: Materials in Electronics, 45 (5). pp. 1393-1400. ISSN 1573-482X

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Abstract

Carbon–copper composites with varying copper to carbon ratio of 0.66–1.5 (by weight) were developed from coal-tar-pitch-derived green coke (as such or modified with natural graphite) as carbon source and electrolytic grade copper powder at different heat treatment temperatures (HTTs) of 1000–1400 0C. The physical, mechanical,and electrical properties differ depending upon the HTT and also on copper to carbon ratio (Cu/C). The composites prepared at HTT of 1100 0C having Cu/C ratio of 0.66 and 0.9 exhibited a high bending strength of 150 and 140 MPa, bulk density of 2.63 and 2.81 gm/cm3, electrical resistivity of 1.6 and 0.96 m X cm and shore hardness of 88 and 84, respectively, in spite of well-known inadequate wettability between copper and carbon. Increasing the temperature from 1100 0C for processing of the composites deteriorated the properties mainly due to the loss of copper through melting above 1100 0C as revealed by X-ray, scanning electron microscopy, thermal analysis and EDAX studies.

Item Type:	Article
Additional Information:	Copyright for this article belongs to Springer Science+Business Media
Subjects:	Materials Science
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	03 Apr 2012 07:37
Last Modified:	03 Apr 2012 07:37
URI:	http://npl.csircentral.net/id/eprint/80

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