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Studies in the System (Ba, Ca, Pb)TiO 3
Author(s) -
McQUARRIE MALCOLM
Publication year - 1957
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1957.tb12571.x
Subject(s) - calcium titanate , dielectric , mineralogy , analytical chemistry (journal) , materials science , barium titanate , titanate , barium , dissipation factor , dielectric loss , absorption (acoustics) , phase (matter) , ternary operation , ternary numeral system , chemistry , ceramic , composite material , metallurgy , organic chemistry , optoelectronics , computer science , programming language
The weight loss, dye absorption, crystalline phase or phases, dielectric constant, dissipation factor, and temperature variation of dielectric constant were determined for various bodies in the system (Ba, Ca, Pb)TiO 3 fired in an air atmosphere at temperatures from 800?° to 1400°C. The per cent of PbO loss is proportional to e − B/T , where B is a constant and T is the absolute temperature. It is possible to fire most bodies in this system to zero (visual) dye absorption, but the sensitivity of the dissipation factor to moisture shows that some bodies are not well fired in the electrical sense. The electrical properties correlate well with the crystalline constitution. The two‐phase region of the barium‐calcium titanate binary extends into the ternary to about 35 mole %, lead titanate.