文青波

博士生导师 硕士生导师

所在单位:粉末冶金研究院

学历:博士研究生毕业

办公地点:中南大学粉末冶金研究院

性别:男

联系方式:wentsingbo@csu.edu.cn

学位:工学博士学位

在职信息:在职

毕业院校:达姆施塔特工业大学(德国)

学科:材料科学与工程

曾获荣誉:

2011-05-31  当选:  桑德环境奖学金优秀论文特等奖

2010-11-30  当选:  湖南大学长江环境奖学金

2009-05-31  当选:  湖南省优秀大学毕业生

2008-11-30  当选:  国家奖学金

2007-11-30  当选:  国家奖学金

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Wet oxidation behavior of C/SiC-SiHf(B)CN composites at high temperature

发布时间:2021-09-04

点击次数:

影响因子:5.69

发表刊物:Advanced Composites and Hybrid Materials

摘要:To further improve the oxidation resistance of C/SiC–SiBCN at temperatures over 1200 °C, C/SiC–SiHfCN and C/SiC–SiHfBCN composites were prepared by a new method called chemical vapor infiltration (CVI) combined with polymer infiltration and on-line pyrolysis (PIOP) process. The weight change behavior, mechanical properties, and microstructure of C/SiC–SiHf(B)CN before and after oxidation in wet oxygen were studied in detail. Through the replacement of B by Hf, the weight loss of the composite in high-temperature wet oxygen environment has been significantly reduced. The strength retention of C/SiC–SiHfBCN is up to 75% after oxidation in wet oxygen at 1400 °C and the strength retention of C/SiC–SiHfBCN can reach 85% after oxidation in an atmosphere with high oxygen and water vapor content at 1300 °C. In addition, microscopic analysis showed that after oxidation at 1400 °C, only the fibers in the near-surface matrix were oxidized to some extent and hafnium has been enriched at the composite surface. Our work provides a reference for the study of the oxidation resistance of C/SiC composites in harsh environments.

合写作者:Jiahao Zhang, Lei Wang, Qingbo Wen, Zhaoju Yu, Laifei Cheng, Ralf Riedel

第一作者:Xingang Luan

论文类型:期刊论文

文献类型:J

卷号:3

期号:3

页面范围:415-429

是否译文:

发表时间:2020-09-13

收录刊物:SCI

发布期刊链接:https://www.springer.com/journal/42114

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