Process for preparing a particulate ceramic material

Patent · Tue Aug 27 00:00:00 EDT 1985

OSTI ID:6217839

Okabe, S; Hamaji, Y; Kato, Y; Kojima, S; Kotatsu, H

A process for preparing a particulate ceramic material comprising the steps of: adding carbon dioxide or an aqueous solution of a soluble carbonate to first aqueous solution of a nitrate or chloride of Ba, Sr, Ca or Mg in a first vessel to adjust the pH of said first aqueous solution to between 7 and 10 thereby forming a carbonate precipitate; adding an aqueous solution of a soluble hydroxide to a second aqueous solution of a nitrate or chloride of Ti, Zr, Sn or Pb in a second vessel to adjust the pH of said second aqueous solution to between 7 and 10 thereby forming a hydroxide precipitate; combining slurries containing the precipitates formed in said first and second vessels; mixing the combined slurries; passing the slurries through a filter; washing the filter cake with water; drying the filter cake to form a powder; calcining the dried powder; and grinding the calcined powder.

• Assignee: Murata Manutacturing Co., Ltd. (Japan)
• Patent Number(s): US 4537865
• OSTI ID: 6217839
• Resource Relation: Patent Priority Date: Priority date 11 Jul 1984, Japan; Other Information: PAT-APPL-629846
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERAMICS
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
AQUEOUS SOLUTIONS
BARIUM COMPOUNDS
CALCIUM COMPOUNDS
CARBON DIOXIDE
CARBONATES
CHLORIDES
DISSOLUTION
HYDROXIDES
LEAD COMPOUNDS
MAGNESIUM COMPOUNDS
NITRATES
POWDERS
SOLUBILITY
STRONTIUM COMPOUNDS
TIN COMPOUNDS
TITANIUM COMPOUNDS
ZIRCONIUM COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHLORINE COMPOUNDS
DISPERSIONS
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
MIXTURES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SOLUTIONS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication