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Coarsening Process of Penetration‐Twinned Grains in PMN‐35 mol% PT Ceramics
Author(s) -
Chung UiJin,
Jo Wook,
Lee JeHun,
Hwang gMoon,
Kim DohYeon
Publication year - 2004
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.1551-2916.2004.00125.x
Subject(s) - nucleation , materials science , penetration (warfare) , zigzag , ceramic , crystallography , crystal twinning , mineralogy , microstructure , composite material , chemistry , geometry , mathematics , organic chemistry , operations research , engineering
In a Pb(Mg 1/3 Nb 2/3 )O 3 ‐35 mol% PbTiO 3 (PMN‐35PT) specimen with 5 mol% excess PbO, the pores trapped inside grains by heat treatment in a double cycle at 1150°3C have revealed the coarsening pattern of the grains. Using this technique, the coarsening process of abnormal large grains with typical characteristics of penetration twins could be determined. The results suggest that two‐dimensional nucleation and lateral growth enhanced at the reentrant edges are the cause of zigzag‐shaped σ3 incoherent twin boundaries.