Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Patent
1989-10-04
1991-02-05
Rosenberg, Peter D.
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
252 629, 423592, C01G 2502, C01G 2702
Patent
active
049903241
ABSTRACT:
Aqueous titanium tetrachloride solution and aqueous zirconium nitrate solution of components except zirconium, for forming lead zirconate-tinatate in which part of the lead is substituted for any of the lanthanide elements are mixed, and the mixture is hydrolyzed to form sol. This sol is cleaned, dried, and calcined at 1100.degree. C. to form modified powder. The compounds of the remaining component of lead zirconate-titanate, such as TiO.sub.2 powder, PbO powder and Sm.sub.2 O.sub.3 powder, are mixed with the modified powder, and the resultant mixture is calcined at 750.degree. C. for 1 hour to produce the lead zirconate-titanate.
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Fujii Akira
Niwa Hitoshi
Niwa Naoto
Shirasaki Shin-ichi
Tomita Masahiro
Nippondenso Co. Ltd.
Rosenberg Peter D.
Science and Technology Agency Natl. Institute for Research in In
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