CuO-based oxide mixtures were selected as sintering aid for (Ba,Ca)(Ti,Zr)O3 ceramics. Both microstructure and dielectric properties of were remarkably influenced by BaCO3-CuO flux type. With 1 wt% additive of BaCuO2-2.5CuO eutectic phase, (Ba,Ca)(Ti,Zr)O3 ceramics give high dielectric constant of 11000 and uniform grain size of 4 approx. 10 μm when sintered at 1130°C for 1 h. Different kinds of CuO-MOx mixtures were also used to investigate the role of MOx metal oxide in the grain growth and densification of CuO-added (Ba,Ca)(Ti,Zr)O3 ceramics. The eutectic temperature between CuO and MOx plays an important key in microstructure evolution. Both dielectric properties and microstructure can be further modified with doping secondary oxides.
|Issue number||1 -4 pt 3|
|State||Published - 1 Dec 1999|
|Event||Proceedings of the 1998 2nd Asian Meeting on Ferrroelectricity (AMF-2) - Singapore, Singapore|
Duration: 7 Dec 1998 → 11 Dec 1998