Abstract
AbstractThe interdependence of green density and particle size and their influence on the reaction sintering behaviour of zircon–dolomite powder mixtures under constant heating rate conditions, non-isothermal sintering, were investigated. Powder size was controlled by attrition milling for different times and was defined as the average size obtained by laser particle size analysis. Green compact density was shown to be related to the powder particle size distribution for identical consolidation conditions. Both the green density and the degree of powder agglomeration affect the sintering behaviour over the entire process. The experimental results showed that compacts with similar green density and which contained fewer coarse particles had a higher shrinkage rate. By adequate control of processing parameters it is possible to obtain dense or porous materials. The most important controlling parameters are the particle size of the raw materials and sintering temperature.
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