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中国腐蚀与防护学报  2004, Vol. 24 Issue (2): 87-90     
  研究报告 本期目录 | 过刊浏览 |
电场对铁电陶瓷压痕裂纹的作用
黄海友;褚武扬;宿彦京;高克玮;乔利杰
北京科技大学材料物理与化学系
EFFECTS OF ELECTRIC FIELD ON INDENTATION CRACKS OF PZT FERROELECTRIC CERAMICS
Huang Haiyou;Chu Wuyang;Su Yanjing;Gao Kewei;Qiao Lijie
北京科技大学材料物理与化学系
全文: PDF(109 KB)  
摘要: 研究了极化锆钛酸铅(PZT-5)铁电陶瓷压痕裂纹在硅油中电场作用下的扩展过程。结果表明,当外加电场强度大于裂纹瞬时扩展临界电场强度(Eip=5.25kv/cm),压痕裂纹能够发生瞬时扩展,继续保持恒电场,裂纹会继续扩展。当外加电场强度小于裂纹瞬时扩展临界电场强度,裂纹不发生瞬时扩展,但保持恒定电场,裂纹会发生滞后扩展。同时,裂纹扩展量显示各向异性,与垂直于电场方向裂纹相比,平行于电场方向的裂纹扩展量很小。
关键词 PZT-5铁电陶瓷电场强度压痕裂纹各向异性    
Abstract:Propagation process of indentation cracks in silicon oil with an applied electric field for poled PZT-5 ferroelectric ceramics has been investigated. The results showed that indentation cracks could instantaneously propagate in silicon oil with an applied electric field which was higher than critical electric field for instantaneous propagation (Eip=5.25kv/cm) and the lengths of cracks could increase with increasing the time to keep sustained applied electric field. When applied electric field was lower than Eip, the cracks could not propagate, but if keep sustained electric field, delayed propagation might occur. Moreover, the anisotropy of cracks propagation has been measured. The propagation lengths of the cracks parallel to applied electric field direction are shorter than that of perpendicular to applied electric field direction.
Key wordsPZT-5 ferroelectric ceramics    electric field    indentation crack    anisotropy
收稿日期: 2003-12-17     
ZTFLH:  TG111.91  
通讯作者: 黄海友     E-mail: hhy_china@sina.com
Corresponding author: 北京科技大学材料物理系     E-mail: hhy_china@sina.com

引用本文:

黄海友; 褚武扬; 宿彦京; 高克玮; 乔利杰 . 电场对铁电陶瓷压痕裂纹的作用[J]. 中国腐蚀与防护学报, 2004, 24(2): 87-90 .
Huang Haiyou, Chu Wuyang, Su Yanjing, Gao Kewei, Qiao Lijie. EFFECTS OF ELECTRIC FIELD ON INDENTATION CRACKS OF PZT FERROELECTRIC CERAMICS. J Chin Soc Corr Pro, 2004, 24(2): 87-90 .

链接本文:

https://www.jcscp.org/CN/      或      https://www.jcscp.org/CN/Y2004/V24/I2/87

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