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Numerical modelling of transient liquid phase bonding and other diffusion controlled phase changes

Illingworth, T.C., Golosnoy, I.O., Gergely, V. and Clyne, T.W. (2005) Numerical modelling of transient liquid phase bonding and other diffusion controlled phase changes Journal of Materials Science, 40, (9-10), pp. 2505-2511.

Record type: Article


Diffusion in material of inhomogeneous composition can induce phase changes, even at a constant temperature. A transient liquid phase (TLP), in which a liquid layer is formed and subsequently solidifies, is one example of such an isothermal phase change. This phenomenon is exploited industrially in TLP bonding and sintering processes. Successful processing requires an understanding of the behaviour of the transient liquid layer in terms of both diffusion-controlled phase boundary migration and capillarity-driven flow. In this paper, a numerical model is presented for the simulation of diffusion-controlled dissolution and solidification in one dimension. The width of a liquid layer and time to solidification are studied for various bonding conditions. A novel approach is proposed, which generates results of a high precision even with coarse meshes and high interface velocities. The model is validated using experimental data from a variety of systems, including solid/solid diffusion couples.

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Published date: May 2005
Organisations: EEE


Local EPrints ID: 264616
ISSN: 0022-2461
PURE UUID: 4ab8d444-aa0c-4ae0-a649-0744d78ada3b

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Date deposited: 02 Oct 2007
Last modified: 18 Jul 2017 07:34

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Author: T.C. Illingworth
Author: I.O. Golosnoy
Author: V. Gergely
Author: T.W. Clyne

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