EFFECTS OF GROWTH MECHANISM ON SOLUTION KINETICS.
Abstract
The solution kinetics of second phases were studied as a function of various initial conditions resulting from either diffusion-controlled growth or interface-reaction-controlled growth prior to solution treatment. Calculations of solution kinetics based upon a planar, finite-geometry model were carried out using numerical methods and computer techniques. It was shown that second-phase particles formed by diffusion-controlled growth and existing in a matrix containing concentration gradients exhibit dissolution kinetics that differ markedly from those of particles formed by interface-reaction-controlled growth. An experimental analysis designed to use solution kinetics measurements to obtain the mechanism of growth of second phases is discussed. The effects of linear-gradient assumptions that have been used in an existing, closed-form, infinite-geometry model are evaluated. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1969
- Accession Number
- AD0696954
Entities
People
- Richard A. Tanzilli
- Richard W. Heckel
Organizations
- Drexel University