An analytical approach for fraction calculation of monoclinic phase on zirconia surface under aging conditions was developed. The approach is based on a model of nucleation and growth of areas… Click to show full abstract
An analytical approach for fraction calculation of monoclinic phase on zirconia surface under aging conditions was developed. The approach is based on a model of nucleation and growth of areas which underwent tetragonal to monoclinic transformation. Nucleation in this model takes place only at the material surface with nucleation rate proportional to the area of non-transformed zone. The nuclei are conical in shape; their initial dimensions and growth rate are constant. The resulting equations describe factual and observed monoclinic phase content on the surface of zirconia ceramics. The equations correlate well with experimental data on tetragonal zirconia ceramics aging kinetics.
               
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