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Change in the Fracture Mode of PLZT Ceramics by Chemically Induced Grain‐Boundary Migration
Author(s) -
Kim JeongJoo,
Kim DohYeon
Publication year - 1988
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.1151-2916.1988.tb05062.x
Subject(s) - materials science , grain boundary , transgranular fracture , ceramic , fracture toughness , intergranular corrosion , creep , intergranular fracture , composite material , zirconium , titanium , fracture (geology) , metallurgy , microstructure
The undulating grain‐boundary structure formed by chemically induced grain‐boundary migration in lanthanum‐modified‐lead‐zirconium‐titanium ceramics causes a change in the fracture mode and an increase in room‐temperature fracture toughness. Specimens with normal and undulating grain‐boundary structure exhibit intergranular and transgranular fracture, respectively. The grain‐boundary undulation is suggested to be effective for improving high‐temperature creep resistance.