Al2O3界面修饰单向纤维C/C复合材料组织结构及其力学性能

兰州理工大学学报 ›› 2023, Vol. 49 ›› Issue (6): 1-8.

• 材料科学与工程 • 下一篇

Al₂O₃界面修饰单向纤维C/C复合材料组织结构及其力学性能

贾建刚^*1, 钮超¹, 张真¹, 伏芳杏², 潘子康¹

1.兰州理工大学材料科学与工程学院, 甘肃兰州 730050;
2.上海大学材料科学与工程学院, 上海 200444

收稿日期:2023-05-15 出版日期:2023-12-28 发布日期:2024-01-05
通讯作者: 贾建刚(1977-),男,河北邯郸人,教授.Email:jiajg@lut.edu.cn
基金资助:
国家自然科学基金(52162005)

Organizational structure and mechanical properties of Al₂O₃ interfacially modified unidirectional fiber C/C composites

JIA Jian-gang¹, NIU Chao¹, ZHANG Zhen¹, FU Fang-xing², PAN Zi-kang¹

1. School of Materials Science and Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China;
2. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China

Received:2023-05-15 Online:2023-12-28 Published:2024-01-05

摘要/Abstract

摘要： 为了缓解C/C复合材料脆性,利用勃姆石溶胶对单向碳纤维预制体进行处理,在纤维表面制备了Al₂O₃涂层.使用自制的热梯度化学气相沉积(TG-CVI)设备对预制体进行致密化,得到致密的C/C复合材料.通过高温热处理进一步调节界面的结合强度和基体碳的石墨化程度.利用排水法测试复合材料的密度,万能材料试验机测试其拉伸性能,采用可视化石墨烯片层技术(VGT)对试样进行处理,使用偏光显微镜(PLM)、扫描电子显微镜(SEM)、X-射线衍射(XRD)分别研究复合材料的微观组织、界面和断面形貌、以及物相组成.结果表明:涂覆Al₂O₃涂层的C/C复合材料在沉积后期转变为粗糙层(RL)织构.经过高温热处理后,碳基体的石墨化程度提高,改变了C/C复合材料的断裂机制.由复合材料最初的脆性断裂向拟延性转变,延伸率提高.C_f(Al₂O₃)/C-3样品的峰值应力达到了77.3 MPa,延伸率达到了15%.

关键词: C/C复合材料, 氧化铝, 界面改性, 热解碳基体, 组织结构

Abstract: In order to alleviate the brittleness of C/C composites, the unidirectional carbon fiber preform was treated with Boehm sol, and the Al₂O₃ coating was prepared on the fiber surface. The preform was densified by self-made thermal gradient chemical vapor infiltration (TG-CVI) deposition equipment to obtain a dense C/C composite. The bonding strength of the interface and the graphitization degree of the matrix carbon were further adjusted by high-temperature heat treatment.The density of the composite material was tested by drainage method, while tensile properties were assessed with the universal material testing machine. The sample was treated with the visualization of graphene texture (VGT). The microstructure, interfacial, and cross-sectional morphologies of the composite were studied using polarizing microscope (PLM), scanning electron microscope (SEM), and X-ray diffraction (XRD) to analyze phase composition. The results showed that the C/C composites coated with Al₂O₃ coating transform into rough layer (RL) texture in the late deposition stage. After high-temperature heat treatment, the graphitization degree of the carbon matrixis increased. As a result of this, the fracture mechanism of the C/C compositeis significantly changed. The elongation is improved from the initial brittle fracture of the composite to the quasi-ductility. The peak stress of the C_f(Al₂O₃)/C-3 sample reached 77.3 MPa, and the elongation reached 15%.

Key words: C/C composites, Al₂O₃, interfacial modification, pyrolytic carbon matrix, microstructure

中图分类号:

TB332

贾建刚, 钮超, 张真, 伏芳杏, 潘子康. Al₂O₃界面修饰单向纤维C/C复合材料组织结构及其力学性能[J]. 兰州理工大学学报, 2023, 49(6): 1-8.

JIA Jian-gang, NIU Chao, ZHANG Zhen, FU Fang-xing, PAN Zi-kang. Organizational structure and mechanical properties of Al₂O₃ interfacially modified unidirectional fiber C/C composites[J]. Journal of Lanzhou University of Technology, 2023, 49(6): 1-8.

参考文献

[1] 李贺军,史小红,沈庆凉,等.国内C/C复合材料研究进展[J].中国有色金属学报,2019,29(9):2142-2154.
[2] DAI J X,SHA J J,ZU Y F,et al.Microstructural tailoring and its influence on oxidation resistance of carbon fiber-reinforced C-SiC matrix composites[J].Ceramics International,2019,45(2):2044-2052.
[3] 廖晓玲,李贺军,孙国栋,等. 3D C/C复合材料的热膨胀性能[J].新型炭材料,2010,25(1):60-64.
[4] MANOCHA L M,BAHL O P.Influence of carbon fiber type and weave pattern on the development of 2D carbon-carbon composites[J].Carbon,1988,26(1):13-21.
[5] 陈腾飞.炭纤维坯体结构及增密方式对炭/炭复合材料界面及性能的影响研究[D].湖南: 中南大学,2003.
[6] 崔红,苏君明,王俊.C/C复合材料界面及其对性能的影响[J].宇航材料工艺,1996(2):69-72.
[7] KIU G,GUO L J,LIU N K,et al.Significant influence of Al₂O₃ on the flexural properties of C/C composites[J].Vacuum,2018,151:294-297.
[8] SCHUEPFER D B,BADACZEWSKI F,GUERRA-CASTRO J M,et al.Assessing the structural properties of graphitic and non-graphitic carbons by Raman spectroscopy[J].Carbon,2020,161:359-372.
[9] JIA J G,ZHANG B,LIU D Q,et al.Effects of Al₂O₃ coating induced structural and mechanical changes of C/C composites[J].Journal of Alloys and Compounds,2020,818:1-9.
[10] LEE O J,LEE K H,YIM T J,et al.Determination of mesopore size of aerogels from thermal conductivity measurements[J].Journal of Non-Crystalline Solids,2002,298(2):287-292.
[11] HU Z J,HUTTINGER K J.Mechanisms of carbon deposition—a kinetic approach[J].Carbon,2001,40(4):617-636.
[12] GUELLALI M,OBERACKER R,HOFFMANN M J.Influence of the matrix microstructure on the mechanical properties of CVI-infiltrated carbon fiber felts[J].Carbon,2005,43(9):1954-1960.
[13] ZHANG W G,HUETTINGER K J.Influence of initial surface area/volume ratio of the fiber preform on kinetics of chemical vapor infiltration and texture of infiltrated Carbon[J].Mater China,2013,32(11):646-675.
[14] HUTTINGER K J.CVD in hot wall reactors—The interaction between homogeneous gas-phase and heterogeneous surface reactions[J].Chem Vapor Depos,1998,4(4):151-158.
[15] LIEBERMAN M L,PIERSON H O.Effect of gas phase conditions on resultant matrix pyrocarbons in carbon carbon composites[J].Carbon,1974,12(3):233-241.
[16] PIERSON H O,LIEBERMAN M L.The chemical vapor deposition of carbon on carbon fibers[J].Carbon,1975,13(3):159-166.
[17] HAYNES W M,LIDE D R,BRUNO T J.CRC handbook of chemistry and physics[M].Boca Ratou:CRC Press,2016.
[18] MEI H,BAI Q L,JI T M,et al.Effect of carbon nanotubes electrophoretically-deposited on reinforcing carbon fibers on the strength and toughness of C/SiC composites[J].Composites Science and Technology,2014,103:94-98.
[19] YU J K,UENO S,LI H X,et al.Improvement of graphitization of isotropic Carbon by Al₂O₃ formed fromaluminium chelate compound[J].Journal of the European Ceramic Society,1999,19:2483-2488.
[20] COCHRAN C N.Aluminum suboxide formed in reaction of aluminum with alumina[J].Journal of the American Chemical Society,1955,77(8):2190-2191.
[21] SONG Q,LI K Z,LI H J,et al.Increasing the tensile property of unidirectional Carbon/Carbon composites bygrafting Carbon nanotubes onto Carbon fibers by electrophoretic deposition[J].Journal of Materials Science & Technology,2013,29(8):711-724.

Al₂O₃界面修饰单向纤维C/C复合材料组织结构及其力学性能

Organizational structure and mechanical properties of Al₂O₃ interfacially modified unidirectional fiber C/C composites

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 3

编辑推荐

Metrics

本文评价

[1]	黄国威, 李婷, 孙立, 狄正贤, 樊恒中. 烧结工艺对透明氧化铝陶瓷性能的影响[J]. 兰州理工大学学报, 2022, 48(6): 8-15.
[2]	赵燕春,李泽锋,王博,寇生中,李文生. 多组元铁基非晶复合材料的力学性能研究[J]. 兰州理工大学学报, 2021, 47(6): 1-5.
[3]	季根顺, 赵浩, 贾建刚, 张胜, 李周, 郝相忠. 定向脉冲气流TG-CVI法致密C/C复合材料工艺及性能[J]. 兰州理工大学学报, 2020, 46(1): 20-23.