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Use of Succinic Acid to Test the Stability of PTCR Barium Titanate Ceramics under Reducing Conditions
Author(s) -
Sinclair Derek C.,
West Anthony R.
Publication year - 1995
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.1151-2916.1995.tb08393.x
Subject(s) - succinic acid , barium titanate , temperature coefficient , reducing atmosphere , ceramic , materials science , grain boundary , chemical engineering , barium , mineralogy , chemistry , composite material , metallurgy , microstructure , organic chemistry , engineering
On heating positive temperature coefficient of resistance (PTCR) BaTiO 3 ceramics at 350°C in succinic acid powder, a reducing atmosphere is created as the succinic acid pyrolyzes. Grain boundary resistances, which may give a PTCR effect, are reduced by this treatment, whereas surface layer resistances, which may also give a PTCR effect, are much less affected.