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

Divya, V. D. ; Ramamurty, U. ; Paul, A. (2010) Topological close packed μ phase formation and the determination of diffusion parameters in the Co-Mo system Intermetallics, 18 (2). pp. 259-266. ISSN 0966-9795

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.intermet.2009.07.019

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 μ 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:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:B. Diffusion; A. Intermetallics; Miscellaneous; B. Phase Diagrams; G. Aero-Engine Components
ID Code:62547
Deposited On:22 Sep 2011 03:17
Last Modified:22 Sep 2011 03:17

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