2025年04月05日 星期六 首页   |   期刊介绍   |   编 委 会   |   投稿指南   |   出版法规   |   出版伦理   |   期刊订阅   |   联系我们   |   留言板   |   广告合作   |   ENGLISH
粉末冶金材料科学与工程  2021, Vol. 26 Issue (2): 132-138    
  工艺技术 本期目录 | 过刊浏览 | 高级检索 |
C/C复合材料密度及预氧化处理对SiC涂层的影响
杨凡, 谢奥林, 张贝, 易茂中
中南大学 粉末冶金国家重点实验室,长沙 410083
Effect of the density of C/C composites and pre-oxidation process on SiC coatings
YANG Fan, XIE Aolin, ZHANG Bei, YI Maozhong
State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
全文: PDF (1030 KB)   HTML (1 KB) 
输出: BibTeX | EndNote (RIS)      
摘要 采用包埋法分别在密度为0.8、1.4和1.8 g/cm3的炭/炭(C/C)复合材料表面制备SiC涂层,选择密度为1.8 g/cm3的试样研究预氧化处理对涂层结构和抗氧化性能的影响。利用扫描电子显微镜和X射线衍射仪研究涂层的显微组织和物相组成,用1 500 ℃静态空气氧化方法测试涂层的抗氧化性能。结果表明,随C/C复合材料密度增大,涂层嵌入基体的深度越小,涂层与基体的分界越明显。密度为1.8 g/cm3的C/C复合材料进行预氧化处理后,表面粗糙度增大,表面的炭纤维周围产生了环形孔隙,再经过包埋制备SiC涂层,涂层厚度增加且更加均匀致密。将样品于1 500 ℃静态空气中氧化334 h后,氧化质量损失率为0.684×10-4 g/(cm2∙h),氧化后表面生成了莫来石相,抗氧化性能有明显提升。
服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
杨凡
谢奥林
张贝
易茂中
关键词 C/C复合材料碳化硅涂层预氧化包埋法抗氧化性能    
Abstract:SiC coatings were prepared on the surface of carbon/carbon (C/C) composites with densities of 0.8, 1.4 and 1.8 g/cm3 by the pack cementation. The samples with a density of 1.8 g/cm3 were selected to research the effect of pre-oxidation treatment on structure and oxidation resistance of the coating. Scanning electron microscope and X-ray diffractometer were used to study the microstructure and phase composition of the coating. The anti-oxidation resistance of the coating was tested by static air oxidation at 1 500 ℃. The results show that as the density of the C/C composites increases, the thickness of the coating decreases, and the boundary between the coating and the substrate becomes more obvious. After the pre-oxidation treatment of 1.8 g/cm3 C/C composites, the surface roughness increases, and the ring pores around the carbon fibers on the surface are generated. After pack cementation process, the thickness of coating increases and becomes more uniform and compact. After the sample is oxidized in static air at 1 500 ℃ for 334 h, the oxidation mass loss rate is 0.684×10-4 g/(cm2·h). The mullite phase is formed on the surface of the sample, and the oxidation resistance was significantly improved.
Key wordscarbon/carbon composites    silicon carbide coating    pre-oxidation    pack cementation    anti-oxidation resistance
收稿日期: 2020-12-02      出版日期: 2021-05-07
ZTFLH:  TB332  
基金资助:装备预研项目(4142××××107)
引用本文:   
杨凡, 谢奥林, 张贝, 易茂中. C/C复合材料密度及预氧化处理对SiC涂层的影响[J]. 粉末冶金材料科学与工程, 2021, 26(2): 132-138.
YANG Fan, XIE Aolin, ZHANG Bei, YI Maozhong. Effect of the density of C/C composites and pre-oxidation process on SiC coatings. Materials Science and Engineering of Powder Metallurgy, 2021, 26(2): 132-138.
链接本文:  
http://pmbjb.csu.edu.cn/CN/     或     http://pmbjb.csu.edu.cn/CN/Y2021/V26/I2/132
版权所有 © 《粉末冶金材料科学与工程》编辑部
地址:长沙市麓山南路中南大学粉末冶金研究院 邮编:410083 电话:0731-88877163 邮箱:pmbjb@csu.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn