Grain Growth Behavior of Al₂O₃-ZrO₂ with small zirconia content

Abstract

Grain growth behavior in Alumina-Zirconia with small zirconia contents (≤ 5vot%) was examined. The grain growth of alumina was effectively retarded by zirconia particles, regardless of small zirconia contents. The amount of the zirconta particles in the alumina grains increased with decreasing zirconia content and increasing sintering temperature, without abnormal alumina grain growth. Grain growth inhibition of atumina in the Alumina-Zirconia with small zirconia content cannot be simply explained by the model of Zener’s pinning effect.