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Ceramic dielectric compositions and method for enhancing dielectric properties

  • US 5,082,811 A
  • Filed: 02/28/1990
  • Issued: 01/21/1992
  • Est. Priority Date: 02/28/1990
  • Status: Expired due to Term
First Claim
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1. A process for preparing a ceramic dielectric composition having a chemically homogeneous coating of secondary metal oxide or hydrous metal oxide components on the surface of a primary ceramic particle component comprising the steps of:

  • (a) adding a stable solution of metal chelates to a slurry of fine particle of primary ceramic component with an aqueous solvent with agitation;

    (b) adding a strong base to said slurry with metal chelates of step (a) while maintaining a sufficient temperature for a sufficient time to decompose said metal chelates and to deposit a homogeneous coating of secondary metal oxide or hydrous metal oxides components on the surface of the primary ceramic particle component; and

    (c) recovering an washing the homogeneously coated particles.

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