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材料工程  2010, Vol. 0 Issue (3): 13-17    
  测试与表征 本期目录 | 过刊浏览 | 高级检索 |
C/Si-C-N复合材料的制备及其氧化行为研究
卢国锋1,2, 乔生儒1, 弓满锋1, 侯军涛1, 焦更生2
1. 西北工业大学超高温复合材料国家重点实验室, 西安, 710072;
2. 渭南师范学院, 陕西, 渭南, 714000
Fabrication and Oxidation Behavior of C/Si-C-N Composite
LU Guo-feng1,2, QIAO Sheng-ru1, GONG Man-feng1, HOU Jun-tao1, JIAO Geng-sheng2
1. National Key Laboratory of Thermostructure Composite Materials, Northwestern Polytechnical University, Xi’an, 710072, China;
2. Weinan Teacher’s University, Weinan, 714000, Shaanxi, China
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摘要 采用CVI方法制备出了以Si-C-N陶瓷为基体以热解炭为界面的炭纤维增强陶瓷基复合材料(C/Si-C-N).采用热重法研究了C/Si-C-N复合材料在空气中的氧化行为,并探讨了基体制备温度对复合材料抗氧化性能的影响.研究表明:不同温度下制备的复合材料,其氧化行为完全不同.高温下制备的C/Si-C-N复合材料其氧化失重随氧化温度的升高而持续增加;低温下制备的C/Si-C-N复合材料则其氧化失重先随温度的升高而增加,随后在800~1000℃之间随温度的升高而减小,接着又随温度的升高而增加.较高的制备温度可使复合材料在900℃以下温度区间的抗氧化性能得到提高,但却使900℃以上温度区间的抗氧化性能降低.
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卢国锋
乔生儒
弓满锋
侯军涛
焦更生
关键词 复合材料抗氧化性能Si-C-N裂纹热膨胀系数    
Abstract:Carbon fiber reinforced Si-C-N matrix composite(C/Si-C-N) with a pyrolytic carbon(PyC) interlayer was fabricated by chemical vapor infiltration processing.The oxidation behavior of C/Si-C-N were investigated in air using thermogravimetry.The influence of the processing temperature on oxidation resistance of the C/Si-C-N composites was discussed.The results indicate that the C/Si-C-N composites prepared at different temperature have different oxidation behavior.The mass loss of C/Si-C-N prepared at higher temperature always increases with the increase of temperature.The mass loss of C/Si-C-N prepared at lower temperature firstly increases,then decreases between 800-1000℃,subsequently increases,with the increase of temperature.The higher processing temperature leads to the higher oxidation resistance of C/Si-C-N composites below 900℃,but make the oxidation resistance decrease above 900℃.
Key wordscomposite    oxidation resistance    Si-C-N    crack    CTE
收稿日期: 2009-01-05      出版日期: 2010-03-20
中图分类号:  TB332  
基金资助:国家自然科学基金(50772089);陕西省教育厅科研项目(09JK425)
作者简介: 卢国锋(1975- ),男,讲师,博士,研究方向为C/Si-C-N复合材料的制备与性能,联系地址:陕西省渭南市渭南师范学院化学化工系(714000),E-mail:luguof.student@sina.com
引用本文:   
卢国锋, 乔生儒, 弓满锋, 侯军涛, 焦更生. C/Si-C-N复合材料的制备及其氧化行为研究[J]. 材料工程, 2010, 0(3): 13-17.
LU Guo-feng, QIAO Sheng-ru, GONG Man-feng, HOU Jun-tao, JIAO Geng-sheng. Fabrication and Oxidation Behavior of C/Si-C-N Composite. Journal of Materials Engineering, 2010, 0(3): 13-17.
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http://jme.biam.ac.cn/CN/      或      http://jme.biam.ac.cn/CN/Y2010/V0/I3/13
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