Lead-containing oxide powder

Details Lead-containing oxide powder Lead-containing oxide powder

1987-02-06

1989-03-14

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Titanate, zirconate, stannate, niobate, or tantalate or...

423594, 423598, 423599, 423600, 423619, 428404, 501134, 501135, 501137, 501138, 501139, C03C 35/46

Patent

active

048124265

ABSTRACT:
According to the invention a powder of lead-containing oxides and a process for preparing the same for the production of an element for electrical and other applications are provided. The powder is prepared by mixing and calcining a powder of oxides of metals other than lead, lead-containing oxides, metal substances forming the oxides upon calcination or mixtures thereof, adding and mixing a powder of a lead substance to obtain a mixture and then calcining the mixture. The powder includes a Perovskite type lead-containing oxides of the formula of ABO.sub.3 wherein A is a metal element coordinated with 12 oxygen atoms and containing at least lead, and B is a metal element coordinated with 6 oxygen atoms. A phase containing the lead forms a skin layer of the powder.

REFERENCES:
patent: 4339544 (1982-07-01), Sakabe et al.
Swartz, S. et al., "Fabrication of Perovskite Lead Magnesium Niobate", Mat. Res. Bull., vol. 17, pp. 1245-1250, 1982.

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