抄録
Kinetics of solid state reaction and grain growth behavior of BaTiO3-CaTiO3-SrTiO3 system ceramics has been studied. It is shown that the formations of both BaTiO3 and SrTiO3 are due to the phase boundary controlled reaction. On the other hand, that of CaTiO3 is diffusion controlled. Grain growth of this system could be expressed by the equation Gn=kt, where n=8.0 and Q=690kJ/mol (activation energy) were obtained under Po2=10-10Pa. It is possible to control the microstructure of this system by oxygen partial pressure(Po2) during firing. When Po2≤10-8Pa, the microstructure of this system becomes fine and uniform.
