TEM Observation of Crack Propagating Path in A Ce-TZP Ceramics

Yao Kefu; Sun Yaoqing; Chen Guoliang

doi:10.13374/j.issn1001-053x.1993.03.024

Volume 15 Issue 3

Oct. 2021

Turn off MathJax

Article Contents

Article Navigation > Chinese Journal of Engineering > 1993 > 15(3): 272-275

Yao Kefu, Sun Yaoqing, Chen Guoliang. TEM Observation of Crack Propagating Path in A Ce-TZP Ceramics[J]. Chinese Journal of Engineering, 1993, 15(3): 272-275. doi: 10.13374/j.issn1001-053x.1993.03.024

Citation:

Yao Kefu, Sun Yaoqing, Chen Guoliang. TEM Observation of Crack Propagating Path in A Ce-TZP Ceramics[J]. Chinese Journal of Engineering, 1993, 15(3): 272-275. doi: 10.13374/j.issn1001-053x.1993.03.024

Citation:

PDF( 863 KB)

TEM Observation of Crack Propagating Path in A Ce-TZP Ceramics

doi: 10.13374/j.issn1001-053x.1993.03.024

1. University of Science and Technology Beijing Huazhong;
2. University of Science and Technology

Received Date: 1992-09-03
Available Online: 2021-10-18

Abstract

Abstract

Crack propagating process in a Ce-TZP ceramics was in-situ observeed in TEM. It was found that the crack propagating process in this ceramics, similar to that in some metal materials, was microcrack nucleation ahead of main crack tip, microcrack growth, then main crack connecting with the micro one and propagating forward. The martensitic transformation of zirconia, induced by crack tip stress field, was observed in the vicinity of crack. Crack deflection was also observed in the ceramics. It was also found that the main crack tip was not sharp, it was a blunted crack.
- TZP ceramics,
- crack propagation,
- in-situ observation transformation toughening,