Chemically Induced Interface Migration in PZT System During Controlling of PbO Content

IN-CHUL PARK Department of Inorganic Materials Engineering, Kyungpook National University, Korea, 702-701

SEUK-CHUL KO Department of Inorganic Materials Engineering, Kyungpook National University, Korea, 702-701

JOON-HYUNG LEE Department of Inorganic Materials Engineering, Kyungpook National University, Korea, 702-701

JEONG-JOO KIM Department of Inorganic Materials Engineering, Kyungpook National University, Korea, 702-701

SANG-HEE CHO Department of Inorganic Materials Engineering, Kyungpook National University, Korea, 702-701

Abstract

Chemically induced interface migration (CIIM) in Pb[(Co_1/3Nb_2/3)_0.1Zr_0.6Ti_0.3]O₃ (PCNZT) ceramics was investigated while controlling the PbO content. After sintering, stoichiometric samples were heat-treated in a PbO atmosphere allowing diffusion of PbO into grain boundaries (alloying), while the samples with excess PbO were heat-treated in air in order to promote PbO evaporation (dealloying). In both cases, an interface moving against their curvature was observed. Because of the zigzag structure of the grain boundaries, the mechanical properties improved.

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Chemically Induced Interface Migration in PZT System During Controlling of PbO Content

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