High Performance <scp> <scp> BaTiO ₃ </scp> </scp> ‐Based <scp>BME</scp> ‐ <scp>MLCC</scp> Nanopowder Prepared by Aqueous Chemical Coating Method

Abstract

Dispersion plays an important role in aqueous chemical coating process for the preparation of BaTiO 3 ‐based powder for base‐metal‐electrode multilayer ceramic capacitors ( BME ‐ MLCC s) in our previous research. In this article, a powerful sand mill ( SC ‐milling) machine is utilized instead of traditional ball milling to produce BaTiO 3 MLCC nanopowder, in which small ZrO 2 beads help to achieve high centrifugal accelerations and avoid BaTiO 3 agglomerates. As much as 1 kg BaTiO 3 nanopowder has been effectively dispersed very well in one time, then a uniform coating of additives on BT nanoparticles has been achieved by aqueous chemical coating method. High performance X7R BaTiO 3 nanoceramics with the average grain size of about 96 nm are obtained. The experimental result indicates that this technology can be feasible to the industry for manufacturing next generation BME ‐ MLCC s.