NonIsothermal Sintering of Cr2 AlC Powder

Rajkumar, Y and Rahul, B M and Ananth Akash, P and Panigrahi, B B (2016) NonIsothermal Sintering of Cr2 AlC Powder. International Journal of Applied Ceramic Technology. ISSN 1546-542X (In Press)

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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°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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Item Type: Article
Uncontrolled Keywords: MAX phase;powder;dilatometer;sintering;activation energy
Subjects: Materials Engineering > Materials engineering
Divisions: Department of Material Science Engineering
Depositing User: Team Library
Date Deposited: 15 Nov 2016 04:58
Last Modified: 15 Nov 2016 04:58
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