Effect of Graphitization Degree of Mesophase Pitch-based Carbon Fibers on Carbon Fiber/Al Interface Damage

被引：0

作者：

Zhang P. ^{[1
]}

Huang D. ^{[1
,2
]}

Zhang F. ^{[1
]}

Ye C. ^{[1
,2
]}

Wu X. ^{[1
,2
]}

Wu H. ^{[1
]}

机构：

[1] College of Materials Science and Engineering, Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology, Hunan University, Changsha

[2] Hunan Province Engineering Research Center for High Performance Pitch-based Carbon Materials, Hunan Toyi Carbon Material Technology Co. Ltd., Changsha

来源：

Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2022年 / 36卷 / 08期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Cf/Al interface; composite; interface damage; magnetron sputtering; mesophase pitch-based carbon fiber;

D O I：

10.11901/1005.3093.2021.181

中图分类号：

学科分类号：

摘要：

Composite of carbon fiber (Cf) with Al-film (Cf/Al) was constructed by magnetron sputtering with mesophase pitch-based carbon fibers of different graphitization degrees as matrix and Al-plate as sputtering target. Then, the microstructure evolution of Cf /Al interface of the prepared composites was investigated, and the damage mechanism of Cf /Al interface was revealed in comparison to that prepared with polyacrylonitrile carbon fiber. The results show: With the increase of graphitization temperature, the size, the degree of orientation and graphitization of graphite micro-crystallites in mesophase asphalt based carbon fiber increased, whilst both of the reaction degree of Cf /Al interface and the damage of carbon fiber reduced. The damage of Cf /Al interface of the composites prepared with Cf of different graphitization degrees depends on the number of initial defects and the propagation of subsequent cracks in the carbon fiber. The graphitization treatment at 2400℃ and 2700℃ could facilitate the crack propagation through graphite micro-lamellas located in between mesophase asphalt-based carbon fibers, however after removing the Al-coating, the fiber damage was 5.19% and 3.70% higher than that of polyacrylonitrile carbon fiber respectively. After graphitization at 3000℃, the mesophase bituminous carbon fiber with higher chemical inertia could reduce the number of defects generated by interfacial reaction, whilst, after removing the Al-coating, the damage of the fiber was 1.85% lower than that of polyacrylonitrile carbon fiber. © 2022 Chinese Journal of Materials Research. All rights reserved.

引用

页码：579 / 590

页数：11

共 21 条

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