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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/12749
Title: Effect of microwave sintering over vacuum and conventional sintering of Cu based nanocomposites
Authors: Mula, Suhrit
Panigrahi J.
Kang P.C.
Koch C.C.
Published in: Journal of Alloys and Compounds
Abstract: The blend compositions of Cu99Cr1 (All the compositions are in atom% until otherwise mentioned.), Cu94Cr 6, Cu99Cr1-4 wt.% SiC (average particle size ∼30 nm) and Cu94Cr6-4 wt.% SiC were ball-milled for 50 h in a stainless steel grinding media. The structural investigation and phase evolution during milling of the same compositions have already been reported in elsewhere ([28]). In the present study, we are reporting effect of microwave sintering on mechanical properties and electrical conductivity over vacuum and conventional sintering carried out at 900 C. Relative densification and grain coarsening characteristics were investigated and compared. The microstructural features were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). The mechanical properties, namely, Vickers hardness and wear resistance, and electrical conductivity were studied to investigate the suitability of the materials for electrical contact applications. The best combination of mechanical properties and electrical conductivity was obtained for microwave sintered specimens. This is possibly due to the enhanced densification and better grain size distribution achieved in microwave sintering technique. Difference in the properties is discussed in the light of electron scattering factor and densification in presence of ultra fine SiC particles in the nanocomposites. © 2013 Elsevier B.V. All rights reserved.
Citation: Journal of Alloys and Compounds (2014), 588(): 710-715
URI: https://doi.org/10.1016/j.jallcom.2013.11.222
http://repository.iitr.ac.in/handle/123456789/12749
Issue Date: 2014
Keywords: Atomic force microscopy (AFM)
Electrical conductivity
Microwave sintering
Nanocomposite
Wear resistance
ISSN: 9258388
Author Scopus IDs: 12783902100
57189688445
7007182376
57203364844
Author Affiliations: Mula, S., Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Rookee 247667, Uttarakhand, India, Department of Materials Science and Engineering, NC State University, 911 Partner's Way, EB I, Raleigh, NC 27606, United States
Panigrahi, J., Department of Metallurgical and Materials Engineering, National Institute of Technology, Rourkela 769008, India
Kang, P.C., School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Koch, C.C., Department of Materials Science and Engineering, NC State University, 911 Partner's Way, EB I, Raleigh, NC 27606, United States
Funding Details: The authors highly appreciate Council of Scientific and Industrial Research, Government of India , for financial support through sanctioned Grant No. 22/0534/10-EMR-II , Dated 28/12/2010.
Corresponding Author: Mula, S.; Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Rookee 247667, Uttarakhand, India; email: suhritmula@gmail.com
Appears in Collections:Journal Publications [MT]

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