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金属学报  1987, Vol. 23 Issue (3): 301-320    
  论文 本期目录 | 过刊浏览 |
Si_3N_4-ZrO_2复合陶瓷的断裂行为
戚培毅;夏非;周延春
中国科学院金属研究所;中国科学院金属研究所;中国科学院金属研究所
FRACTURE BEHAVIOUR OF Si_3N_4-ZrO_2CERAMIC COMPOSITE
QI Peiyi; XIA Fei; ZHOU Yanchun(Institute of Metal Research; Academia Sinica; Shenyang) (Manuscript received 5 May; 1986; revised manuscript 20 November. 1986)
引用本文:

戚培毅;夏非;周延春. Si_3N_4-ZrO_2复合陶瓷的断裂行为[J]. 金属学报, 1987, 23(3): 301-320.
, , . FRACTURE BEHAVIOUR OF Si_3N_4-ZrO_2CERAMIC COMPOSITE[J]. Acta Metall Sin, 1987, 23(3): 301-320.

全文: PDF(1053 KB)  
摘要: <正> ZrO_2增韧的复合陶瓷,由于强度和韧性均得到改善,近年来引起科学和技术界的广泛重视,但其增韧机理还有待进一步研究,当ZrO_2以单斜相弥散于基体中时,其主要增韧机理是微裂纹增韧;然而,当ZrO_2以四方相弥散
Abstract:The fracture behaviour of tetragonal ZrO_2 toughened Si_3N_4 ceramic composite has been investigated using acoustic emission technique, X-ray diffraction, SEM and TEM. The results show that the fracture toughness increased markedly by addition of t-ZrO_2. The t-ZrO_2 particles show a considerable resistance to transformation. It is considered that the toughening mechanism of t-ZrO_2 addition might be crack deflection, crack branching and microcrack toughning.
收稿日期: 1987-03-18     
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