In the analyses of the kinetics of diffusion-controlled phase transformation the
availability of analytical
solutions for dissolution is limited compared to those for growth. The difficulty seems to
arise from the fact that
one has to deal with a non-zero initial radius in the dissolution of precipitates. To
alleviate this difficulty several
approximate analyses, i.e. invariant-field, invariant-size (stationary-interface, SI) and
linearized gradient (LG)
approximations etc., were devised and the accuracy of
