Topological close packed mu phase formation and the determination of diffusion parameters in the Co-Mo system

Divya, VD and Ramamurty, U and Paul, A (2010) Topological close packed mu phase formation and the determination of diffusion parameters in the Co-Mo system. In: Intermetallics, 18 (2). pp. 259-266.

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Abstract

The study on the formation and growth of topological close packed (TCP) compounds is important to understand the performance of turbine blades in jet engine applications. These deleterious phases grow mainly by diffusion process in the superalloy substrate. Significant volume change was found because of growth of the p phase in Co-Mo system. Growth kinetics of this phase and different diffusion parameters, like interdiffusion, intrinsic and tracer diffusion coefficients are calculated. Further the activation energy, which provides an idea about the mechanism, is determined. Moreover, the interdiffusion coefficient in Co(Mo) solid solution and impurity diffusion coefficient of Mo in Co are determined.

Item Type:	Journal Article
Publication:	Intermetallics
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Diffusion;Intermetallics;miscellaneous;Phase diagrams;Aero-engine components.
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	10 Jan 2010 10:16
Last Modified:	19 Sep 2010 05:53
URI:	http://eprints.iisc.ac.in/id/eprint/25287

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