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AlN with 4 wt.% Y2O3 or CaO were prepared by sintering in dilatometer and conventional furnace up to 1850 °C. The aim of this work was to compare the sintering behavior and mechanisms related with the densification of AlN with Y or Ca-containing additives. The sample with Y2O3 approached 33% of total densification by solid-state sintering process preceding the liquid phase formation, which was near...
The sintering behavior of three fine industrial SiC powders (two 6H(α)-type and one 3C(β)-type) has been comparatively investigated. The powders were pressureless sintered with B4C and C additives between 1950°C and 2250°C in a high temperature dilatometer with flowing Ar atmosphere. The densification and shrinkage rate curves, polytype content, and grain growth were correlated with physical and chemical...
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