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Microwave Heating of Grain Boundaries in Ceramics
Author(s) -
Johnson D. Lynn
Publication year - 1991
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.1151-2916.1991.tb06937.x
Subject(s) - grain boundary , materials science , sintering , grain boundary diffusion coefficient , ceramic , grain size , diffusion , grain boundary strengthening , microwave heating , composite material , microwave , metallurgy , mineralogy , thermodynamics , microstructure , chemistry , quantum mechanics , physics
It has been suggested that enhanced sintering of ceramics by microwave heating may be the result of accelerated grainboundary diffusion caused by the grain boundaries being heated to temperatures significantly greater than the bulkspecimen temperature. Heat flow calculations show that the temperature difference between the grain boundary and grain interior will be a small fraction of a degree, even under extreme conditions.