Details

Autor(en) / Beteiligte

• Weinberg, Michael C.

Titel

Finite sample size effects in transformation kinetics

Ist Teil von

• Journal of non-crystalline solids, 1985-01, Vol.72 (2), p.301-314

Ort / Verlag

Legacy CDMS: Elsevier B.V

Erscheinungsjahr

1985

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• The effect of finite sample size on the kinetic law of phase transformations is considered. The case where the second phase develops by a nucleation and growth mechanism is treated under the assumption of isothermal conditions and constant and uniform nucleation rate. It is demonstrated that for spherical particle growth, a thin sample transformation formula given previously is an approximate version of a more general transformation law. The thin sample approximation is shown to be reliable when a certain dimensionless thickness is small. The latter quantity, rather than the actual sample thickness, determines when the usual law of transformation kinetics valid for bulk (large dimension) samples must be modified.