Abstract
Effects of CaCO3 powder sizes on syntheses and characteristics of CaZrO3 powders and (Ba,Ca)(Ti,Zr)O3 (BCTZ) ceramics have been examined in a low-temperature co-firing technique. For the solid state reaction between CaCO3 and ZrO2 to synthesize CaZrO3, the calcination temperature is decreased by applying ultra-fine CaCO3 powders. Moreover, the lowering of calcination temperature enabled to obtain highly dispersed CaZrO3 powders with fine grain (80 nm). For the solid state reaction between CaZrO3 and BaTiO3 powder, the intermediate products depend on the initial grain size of CaZrO3 powders (80, 200 and 300 nm), indicating that reaction kinetics is obviously affected by the powder size of CaZrO3. The dielectric constants of BCTZ ceramics more markedly depend on the CaZrO3 powder sizes and the reaction behavior between CaZrO3 and BaTiO3.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Japan Society of Powder and Powder Metallurgy
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
