Spatial correlations during Ostwald ripening -- A simplified approach

Journal Article · Sat Jul 01 04:00:00 EDT 1995 · Acta Metallurgica et Materialia

DOI:https://doi.org/10.1016/0956-7151(94)00475-W· OSTI ID:100621

Che, D Z; Hoyt, J J ^[1]

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1. Washington State Univ., Pullman, WA (United States). Dept. of Mechanical and Materials Engineering

Due to diffusional interaction between particles, spatial correlations naturally develop during the Ostwald ripening process. An analysis of particle coarsening, valid for low volume fractions of the precipitate phase, is presented which includes the effects of spatial correlations on the growth velocity. The present treatment examines the asymptotic late time limit. The form of the scaled particle size distribution and the volume fraction dependence of the rate constant are both in very good agreement with previous models and numerical simulations. In addition, a possible explanation for the discrepancy between theoretical predictions and experimental measurements of the scaled size distribution is discussed.

• DOE Contract Number: FG06-91ER45454
• OSTI ID: 100621
• Journal Information: Acta Metallurgica et Materialia, Journal Name: Acta Metallurgica et Materialia Journal Issue: 7 Vol. 43; ISSN AMATEB; ISSN 0956-7151
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AGING
COMPOSITE MATERIALS
CONCENTRATION RATIO
FABRICATION
GRAIN GROWTH
MATHEMATICAL MODELS
MATRIX MATERIALS
PARTICLE SIZE
PRECIPITATION
SHAPE