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High Performance BaTiO 3 ‐Based BME ‐ MLCC Nanopowder Prepared by Aqueous Chemical Coating Method
Author(s) -
Zhang Yichi,
Wang Xiaohui,
Kim JinYong,
Tian Zhibin,
Fang Jian,
Hur KangHeon,
Li Longtu
Publication year - 2012
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2011.05038.x
Subject(s) - materials science , ceramic capacitor , coating , ceramic , aqueous solution , agglomerate , nanoparticle , composite material , ball mill , dispersion (optics) , chemical engineering , capacitor , nanotechnology , voltage , chemistry , optics , physics , quantum mechanics , engineering
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.