Parameter Optimization in the Synthesis of BZT Ceramics to Achieve Good Dielectric Properties

الملخص EN

The powder synthesis of barium zirconate titanate (BZT) (BaZrxTi(1-x)O3) from the mechanochemical activation of BaCO3, ZrO2, and TiO2 was studied.

The grinding effect, by using a planetary ball milling, on the crystallization temperature of BZT powders (x=0.05) was analyzed.

X-ray diffractometry, differential thermal analysis, thermogravimetric analysis, and scanning electronic microscopy (SEM) were used as characterization methods.

The crystallization behavior of powders activated by high-energy grinding and the effect of grinding time on the BZT crystallization were analyzed.

After grinding by 4 h, the BaZr(0.05)Ti(0.95)O3 sample was almost fully crystallized at 800°C.

The results of dielectric and ferroelectric properties show that high-energy ball milling is a practical and promising way to prepare BZT ceramics.