Nonisothermal sintering of Cr2AlC powder

Yembadi, R and Bapurao, R and Akash, P A and Panigrahi, Bharat Bhooshan (2017) Nonisothermal sintering of Cr2AlC powder. International Journal of Applied Ceramic Technology, 14 (1). pp. 63-67. ISSN 1546-542X

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Abstract

This work studies the sintering behavior of ultrafine powder of Cr2AlC compound during nonisothermal heating using a dilatometer. Sample exhibits relatively slower densification under pressureless condition where relative density increased from about 61% (green compact) to about 73% during heating up to 1350 degrees C. Axial shrinkage data were analyzed through the volume diffusion and grain boundary diffusion-based sintering models. Estimated activation energy of sintering (352 kJ/mol) for volume diffusion mechanism, was found to be closely matching with the reported activation energy of chromium diffusivity, indicating volume diffusion as a controlling mechanism and chromium as a major diffuser in Cr2AlC.

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IITH Creators:	IITH Creators ORCiD Panigrahi, Bharat Bhooshan UNSPECIFIED
Item Type:	Article
Uncontrolled Keywords:	Activation energy; Dilatometer; MAX Phase; Powder; Sintering
Subjects:	Materials Engineering > Materials engineering Chemical Engineering > Ceramic and allied technologies
Divisions:	Department of Material Science Engineering
Depositing User:	Team Library
Date Deposited:	10 Mar 2017 06:31
Last Modified:	10 Nov 2017 06:27
URI:	http://raiithold.iith.ac.in/id/eprint/3085
Publisher URL:	https://doi.org/10.1111/ijac.12617
OA policy:	http://www.sherpa.ac.uk/romeo/issn/1546-542X/
Related URLs:	Google Scholar

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