Dispersible, metal oxide-coated, barium titanate materials

Details Dispersible, metal oxide-coated, barium titanate materials Dispersible, metal oxide-coated, barium titanate materials

C - Chemistry, Metallurgy

04

B

C04B 35/468 (2006.01) C04B 35/628 (2006.01) H01G 4/12 (2006.01)

Patent

CA 2282503

Barium titanate-based particles having a coating comprising an oxide, hydrous oxide, hydroxide or organic acid salt of a metal other than barium or titanium, wherein at least 90 percent of said particles have a particle size less than 0.9 micrometer when said particles are dispersed by high shear mixing, useful in the fabrication of thin, fine-grained dielectric layers for multilayer ceramic capacitors with high breakdown voltage.

L'invention concerne des particules à base de titanate de baryum présentant un revêtement comprenant un oxyde, un oxyde hydraté, un hydroxyde ou un sel d'acide organique d'un métal autre que le baryum ou le titane; au moins 90 % de ces particules possèdent une taille de particule inférieure à 0,9 micromètre lorsqu'elles sont dispersées par mélange à cisaillement élevé, et elles s'utilisent dans la fabrication de couches diélectriques minces, à grains fins, destinées à des condensateurs céramiques à couches multiples à tension de rupture élevée.

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