Accession Number:

AD0255979

Title:

RESEARCH AND DEVELOPMENT OF HIGH TEMPERATURE FERROELECTRIC MATERIALS

Descriptive Note:

Corporate Author:

WESTINGHOUSE ELECTRIC CORP PITTSBURGH PA

Personal Author(s):

Report Date:

1961-04-11

Pagination or Media Count:

1.0

Abstract:

This report includes A FAMILY OF FERROELECTRIC BISMUTH COMPOUNDS, by E. C. Subbarao. 26 Apr 61, 1v. incl. illus. tables Scientific paper no. 406FD533-P3 The effects of small additions of various sintering aids mineralizers on the properties of PbTiO3 were evaluated. The majority of these additions produced strong PbTiO3 ceramics with densities greater than 90 of theoretical. CaF2 in concentrations of 0.5 and 1.0 mol-, improved the piezoelectric coefficient of PbTiO3 by a factor of 2 to 3. This large increase is believed to be related to the particular microstructure obtained for CaF2 bearing samples. Significant improvements in resistivity could lead to ferroelectric transducers for operation at temperatures beyond those of present commercially available materials. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE