Domain Switching and Crack Propagation of BaTiO₃ Single Crystal in Different Environments

Kewei Gao; Xianwu Zhao; Ruimin Wang; Lijie Qiao; Wuyang Chu

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자료유형: 학술저널

저자정보: Kewei Gao Xianwu Zhao Ruimin Wang Lijie Qiao Wuyang Chu

저널정보: 한국부식방식학회 Corrosion Science and Technology Corrosion Science and Technology 제7권 제6호

발행연도: 2008.1

수록면: 307 - 314 (8page)

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The influence of a moist atmosphere on 90o domain switching under a sustained electric field, stress corrosion cracking of an indentation crack in water and an aggressive solution, and the relation between penetrating crack propagation and domain switching were studied using BaTiO₃ single crystal. The results indicate that enlarging the domain switching zone and crack propagation could be facilitated by a moist atmosphere or an aggressive solution due to the indentation residual stress. A moist atmosphere exerts remarkable influence upon the polarization of BaTiO₃ single crystal under a sustained electric field, and the surface energy of the c domain was much lower than that of the a domain. Domain switching ahead of a penetrating indentation crack tip was an essential requirement for crack propagation under constant stress.

#ferroelectric BaTiO₃ single crystal #indentation crack #domain switching #stress corrosion cracking.

참고문헌 (10)

참고문헌 신청

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Hao T H / 1996 / Fracture mechanics for the design of ceramic multilayer actuators / J Mech Phys Solids 44 : 23 ~

Munoz-Saldana J / 2001 / Stress induced movement of ferroelastic domain walls in BaTiO3 single crystals evaluated by scanning force microscopy / Surface Science

Su Y J / 2004 / Combined effect of electric and mechanical loading on fracture of the PZT-5 ferroelectric ceramics / Acta mater 52 : 3753 ~

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