Journal of Electronic Materials

, Volume 37, Issue 3, pp 368–372

The Effect of Hydrogen on the Fracture Properties of 0.8(Na1/2Bi1/2)TiO3-0.2(K1/2Bi1/2)TiO3 Ferroelectric Ceramics

  • H. Zhang
  • Y.J. Su
  • L.J. Qiao
  • W.Y. Chu
  • D. Wang
  • Y.X. Li
Article

DOI: 10.1007/s11664-007-0342-y

Cite this article as:
Zhang, H., Su, Y., Qiao, L. et al. Journal of Elec Materi (2008) 37: 368. doi:10.1007/s11664-007-0342-y

Abstract

The effect of hydrogen on the fracture properties of lead-free ferroelectric ceramics has been studied. For hydrogen precharged samples, the fracture toughness decreased linearly with both increasing hydrogen concentration and the logarithm of dwell time of indenting. Hydrogen-induced delayed propagation of unloaded indentation cracks can occur, and the threshold stress intensity factor of hydrogen-induced cracking induced by residual stress decreases linearly with increasing hydrogen concentration.

Keywords

Ferroelectric ceramics hydrogen fracture indentation crack 

Copyright information

© TMS 2007

Authors and Affiliations

  • H. Zhang
    • 1
  • Y.J. Su
    • 1
  • L.J. Qiao
    • 1
  • W.Y. Chu
    • 1
  • D. Wang
    • 2
  • Y.X. Li
    • 2
  1. 1.Department of Materials PhysicsUniversity of Science and Technology BeijingBeijingChina
  2. 2.The State Key Laboratory of High-Performance Ceramics and Superfine MicrostructuresShanghai Institute of Ceramics Chinese Academy of SciencesShanghaiChina

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