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Hydrogen fissure in PZT ferroelectric ceramic

Authors
Journal
Materials Letters
0167-577X
Publisher
Elsevier
Publication Date
Volume
58
Issue
15
Identifiers
DOI: 10.1016/j.matlet.2004.01.004
Keywords
  • Pzt Ceramic
  • Hydrogen Fissure
  • Cathodic Charging

Abstract

Abstract Initiation and propagation of hydrogen fissure during cathodic charging of a PZT ferroelectric ceramic without loading have been investigated. The result shows that when hydrogen concentration entered into the PZT ceramic is equal to or exceeds the critical value of 2.6 wppm, hydrogen fissure or microcracks initiate discontinuously along the grain boundaries. New microcracks form and original cracks grow during continuous charging.

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