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Effect of SiO 2 and TiO 2 Addition on the Morphology of Abnormally Grown Large Pb(Mg 1/3 Nb 2/3 )O 3 –35 mol% PbTiO 3 Grains
Author(s) -
Jo Wook,
Chung UiJin,
Hwang gMoon,
Kim DohYeon
Publication year - 2005
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.1551-2916.2005.00363.x
Subject(s) - morphology (biology) , materials science , sintering , grain boundary , abnormal grain growth , crystallography , grain growth , mineralogy , grain size , microstructure , metallurgy , chemistry , geology , paleontology
Abnormal grain growth (AGG) during the sintering of Pb(Mg 1/3 Nb 2/3 )O 3 –35 mol% PbTiO 3 was investigated. When a small amount of SiO 2 was added, large abnormal grains with the penetration twin characteristic were observed to appear. AGG, in this case, is because of the twin plane re‐entrant edges that provide coarsening advantage. When TiO 2 was added, on the other hand, the abnormal grains were simple cubic in morphology with well‐developed {100} planes. In this case, the coarsening advantage is suggested to be because of grain boundary re‐entrant edges.