Microstructure-Property Relationships in Sintered Alumina Ceramics
The paper gives a brief overview of polycrystalline alumina ceramics, including the solid-state sintered and ultrafine grained materials, and the liquid phase sintered aluminas. The influence of glass-forming sintering additives of commercial interest (MgO, CaO, SiO2) and processing conditions on microstructure development of polycrystalline alumina ceramics are discussed in more detail. The influence of grain size, the presence and composition of grain boundary glass, and of secondary crystalline phases in partially crystallized triple pockets on stress state in alumina is discussed.
D. Galusek, "Microstructure-Property Relationships in Sintered Alumina Ceramics", Advances in Science and Technology, Vol. 45, pp. 564-571, 2006