Microstructure, Mechanical Properteis, and Ionic Conductivity of ZrO₂-based Ceramics Fabricated by Hot Isostic Pressing

Abstract

Special attention has been given to ZrO₂-based ceramics, such as partially stabilized ZrO₂ (PSZ), tetragonal ZrO₂ polycrystal (TZP), and ZrO₂-toughened Al₂O₃ (ZTA), to improve the mechanical properties of ceramic materials. Hot isostatic pressing (HIP) is applied to fabricate dense ZrO₂-based ceramics from solid solution powders developed by sol-gel techniques. This paper reviews recent research trends and progresses related to the solid solution and composite ceramics focussing on the microstructures, strength and fracture toughness, and ionic conductivity.