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Effect of BaO Addition on Crystallization, Microstructure, and Properties of Diopside–Ca‐Tschermak Clinopyroxene‐Based Glass–Ceramics
Author(s) -
Goel Ashutosh,
Tulyaganov Dilshat U.,
Kharton Vladislav V.,
Yaremchenko Aleksey A.,
Agathopoulos Simeon,
Ferreira José M. F.
Publication year - 2007
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.1551-2916.2007.01743.x
Subject(s) - diopside , microstructure , materials science , crystallization , sintering , ceramic , mineralogy , cubic zirconia , yttria stabilized zirconia , composite material , chemical engineering , chemistry , engineering
This work presents the processing and the characterization of diopside–Ca‐Tschermak clinopyroxene‐based glass–ceramics (GCs), where partial (i.e., 5%, 10%, and 20%) substitution of Ba for Ca was attempted in the composition of CaMg 0.8 Al 0.4 Si 1.8 O 6 . Sintering, crystallization, microstructure, and properties of the new materials were investigated under different heat‐treatment conditions concerning heating rates (5–40 K/min), temperatures (850°–1000°C), and times (1–300 h). The good matching of thermal expansion coefficients and the strong, but not reactive, adhesion to yttria‐stabilized cubic zirconia, in conjunction with the low level of electrical conductivity and oxygen permeability, indicate that the investigated GCs are suitable for further experimentation as candidates for solid oxide fuel cells sealants .