Acta Metall Sin  2004, Vol. 40 Issue (9): 962-966     DOI:

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Propagation Process of Indentation Cracks in Air and Water Under a Sustained Load for PZT-5 Ferroelectric Ceramics

HUANG Haiyou; CHU Wuyang; SU Yanjing; GAO Kewei; QIAO Lijie

Department of Materials Physics;University of Science and Technology Beijing; Beijing 100083

HUANG Haiyou; CHU Wuyang; SU Yanjing; GAO Kewei; QIAO Lijie. Propagation Process of Indentation Cracks in Air and Water Under a Sustained Load for PZT-5 Ferroelectric Ceramics. Acta Metall Sin, 2004, 40(9): 962-966 .

Abstract References Related Articles Recommended Metrics Download:  PDF(8851KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The propagation processes of indentation cracks in air and water under a sustained load for a PZT-5 ferroelectric ceramics have been investigated. The results show that the indentation cracks could propagate in air and water and arrest after about 120 h. As a result, the crack propagation rates and threshold stress intensity factors for crack arrest in air and water were obtained, and revealed anisotropy. The anisotropy of susceptibility to stress corrosion cracking is relative to the anisotropy of the fracture toughness. The fracture toughness of the crack perpendicular to the poling direction is smaller than that parallel to the poling direction, i.e., KcICda/dt. Stress corrosion cracking in water is more susceptible, i.e., da/dt is larger and KISCC is smaller, than that in air. Key words:  PZT-5 ferroelectric ceramics      air      water       Received:  16 May 2003      ZTFLH:  TG111.91   Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors HUANG Haiyou CHU Wuyang SU Yanjing GAO Kewei QIAO Lijie URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y2004/V40/I9/962 [1] Chen C P, Knapp W J. J Am Ceram Soc, 1977; 60: 87 [2] Ritter J E, Humenik J N. J Mater Sci, 1979; 14: 626 [3] Spearing S M, Zok F W, Evans A G. J Am Ceram Soc,1994; 77: 562 [4] Okabe T, Kido M, Miyahara T. Eng Fract Mech, 1994;48: 1373 [5] Yang W. Mechatronic Reliability. Beijing: Tsinghua University Press, 2001: 9(杨卫.力电失效学.北京:清华大学出版社,2001:9) [6] Wang Y, Chu W Y, Su Y J, Qiao L J. Mater Sci Eng,2002; B95: 263 [7] Fang F, Yang W. Mater Lett, 2000; 46: 131 [8] Michalske T A, Freiman S W. J Am Ceram Soc, 1983; 66:284 [9] Michalske T A, Banker B C. J Appl Phys, 1984; 56: 2666 [10] Chu W Y. Fracture and Environment Fracture. 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