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Discontinuous Dissolution of a Liquid Phase in Ba(Ni 1/3 Nb 2/3 )O 3 Ceramics
Author(s) -
Park JongKeuk,
Kim DohYeon,
Yoon Duk Yong
Publication year - 2001
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.1151-2916.2001.tb00634.x
Subject(s) - dissolution , materials science , sintering , ceramic , liquid phase , phase (matter) , grain boundary , diffusion , mineralogy , metallurgy , analytical chemistry (journal) , chemical engineering , thermodynamics , microstructure , crystallography , chemistry , chromatography , organic chemistry , physics , engineering
Discontinuous dissolution of a liquid phase accompanied by diffusion‐induced grain‐boundary migration (DIGM) in Ba(Ni 1/3 Nb 2/3 )O 3 (BNN) ceramics has been studied. When the liquid‐phase‐sintered BNN specimens are heat‐treated at low temperatures, the liquid phase formed during sintering is dissolved discontinuously and during the reaction grain boundaries migrate. As the heat‐treatment temperature is lowered, the degree of grain boundary migration and dissolution of the liquid phase increase. These results are qualitatively consistent with the coherency strain energy model proposed for the driving force for DIGM.