| EFFECT OF HEAT-TREATMENT ON THE MECHANICAL PROPERTIES OF AIN/SICw(Y_2O_3+SiO_2)COMPOSITE |
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| 作者姓名： | 李凝芳 张宏泉 周毅 |
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| 作者单位： | Li Ningfang1 Zhang Hongquan Zhou YiDept of Material Engineerirg，Wuhan University of Technology |
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| 摘 要： | In the paper, the effect of heat-treatment on thestrength and toughness of AlN-SiC whisker composites with Y_2O_3+SiO_2 additives have been studied. When the sample contining 10wt%Y_2O_3+SiO_2(Y_2O_3/SiO_2=1/0. 66) was treated at 1330℃ in air for 140hours,the flexural strength of composites was raised from 481 MPa to784 MPa the toughness was also enhanced slightly. The phase composi-tion microstructure and grain boundary phase structure have been char-acterized by combining XDR, SEM, TEM/EDXA and HREM tech-niques. reinforcenent and toughening mechanism of the composites re-sults from the crystallization of glass phase in the grain boundary atthe high temperature oxidizing atmosphere to form the crossing struc-ture of 2H°sialon fibrous phase and SiC whisker
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EFFECT OF HEAT-TREATMENT ON THE MECHANICAL PROPERTIES OF AIN/SICw(Y_2O_3+SiO_2)COMPOSITE |
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| Li Ningfang Zhang Hongquan Zhou YiDept of Material Engineerirg,Wuhan University of Technology.EFFECT OF HEAT-TREATMENT ON THE MECHANICAL PROPERTIES OF AIN/SICw(Y_2O_3+SiO_2)COMPOSITE[J].Journal of Wuhan University of Technology. Materials Science Edition,1994(2). |
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| Authors: | Li Ningfang Zhang Hongquan Zhou YiDept of Material Engineerirg Wuhan University of Technology |
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| Affiliation: | Li Ningfang1 Zhang Hongquan Zhou YiDept of Material Engineerirg,Wuhan University of Technology |
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| Abstract: | |
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| Keywords: | AIN whisker composite heat-treatment reinforce-ment toughening |
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