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Promotion of Densification by Grain Growth
Author(s) -
Xue Liang An,
Brook Richard J.
Publication year - 1989
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.1151-2916.1989.tb06131.x
Subject(s) - sintering , grain growth , materials science , abnormal grain growth , curvature , ceramic , doping , grain size , composite material , mineralogy , metallurgy , chemistry , mathematics , optoelectronics , geometry
Comparison of the microstructural changes and of the densification kinetics during the sintering of doped and undoped BaTiO 3 ceramics shows the existence of an increase in densification rate at the point of onset of abnormal grain growth. It is suggested that the increase is attributable to an enhancement of the driving force for densification brought about by the surface curvature changes when a matrix pore makes contact with a growing abnormal grain.