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Improvements in Atmosphere Sintering of Transparent PLZT Ceramics
Author(s) -
SNOW GARY S.
Publication year - 1973
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.1151-2916.1973.tb12528.x
Subject(s) - sintering , materials science , ceramic , atmosphere (unit) , reducing atmosphere , metallurgy , controlled atmosphere , composite material , mineralogy , chemistry , physics , thermodynamics , organic chemistry
An improved atmosphere sintering process was developed for fabricating large transparent PLZT plates for electrooptic applications. Cold‐pressed 9/85/35 PLZT slugs were sintered in O 2 in Pt crucibles for ∼45 min at 1180°C and were then heat‐treated in air for 60 h at 1200°C in Al 2 O 3 crucibles containing PbZrO 3 atmosphere powder. Transparent plates as large as 8.4 cm in diameter and I cm thick were thus fabricated. A mechanism is proposed which qualitatively accounts for the success of this process.