Preparation of ZrO2 beads by an improved micro‐droplet spray forming process.

Monodisperse ZrO2 ceramic beads with size larger than 1 mm have been prepared by an improved micro‐droplet spray forming process, through which a compressor and a dispenser were employed to produce droplets continuously. Furthermore, the slurry recipe and drying temperature have been optimized to enhance the sphericity and smoothness of the beads. The sintered ZrO2 ceramic beads present promising mechanical performance, including a relative density of 84.6%, a crush strength of 256.2 ± 36.6 N as well as a Vickers hardness of 1344.4 ± 58.3 HV. Such procedure reveals great potential in mass production of ceramic beads. [ABSTRACT FROM AUTHOR]