混合前驱体制备高织构三维C/C复合材料的微观结构及疲劳行为

doi:10.15541/jim20190364

无机材料学报 ›› 2020, Vol. 35 ›› Issue (5): 589-592.DOI: 10.15541/jim20190364

所属专题：结构陶瓷论文精选(二)

混合前驱体制备高织构三维C/C复合材料的微观结构及疲劳行为

姚西媛,李克智,任俊杰,张守阳

西北工业大学材料学院, 西安 710072

收稿日期:2019-07-18 修回日期:2019-08-26 出版日期:2020-05-20 网络出版日期:2019-10-25
作者简介:姚西媛(1984-), 女, 助理研究员. E-mail: yaoxiyuan@nwpu.edu.cn<br/>YAO Xiyuan(1984-), female, assistant researcher. E-mail: yaoxiyuan@nwpu.edu.cn
基金资助:
国家自然科学基金重点项目(51502245);中央高校基本科研业务费专项资金(3102019TS0409)

Microstructure and Fatigue Behavior of High Texture Three-dimensional C/C Composites Prepared by Mixed Precursors

YAO Xiyuan,LI Kezhi,REN Junjie,ZHANG Shouyang

School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China

Received:2019-07-18 Revised:2019-08-26 Published:2020-05-20 Online:2019-10-25
Supported by:
National Natural Science Foundation of China(51502245);Fundamental Research Funds for the Central Universities(3102019TS0409)

摘要/Abstract

摘要：

以乙醇和甲烷为前驱体, 采用化学气相渗透工艺制备了三维五向编织C/C复合材料。利用偏光显微技术分析了复合材料的微观结构, 考察了复合材料的静态弯曲性能和疲劳行为, 研究了不同循环加载周期对复合材料弯曲强度和力学行为的影响。结果表明: 采用混合前驱体可成功制备高织构3D C/C复合材料, 材料的平均弯曲强度为379.2 MPa, 其疲劳极限为静态弯曲载荷的80.3%。加载循环应力后, C/C复合材料的弯曲强度在不同周次均有所提升, 循环10 ⁵周后弯曲强度的增幅达16.8%。材料弯曲承载时的“屈服区”随着循环次数的增加出现先增大后减小的变化趋势, 这与材料疲劳过程中纤维与基体、基体与基体的结合状态有关。

关键词: C/C复合材料, 高织构, 疲劳行为

Abstract:

Three-dimensional five-way braided C/C composites were prepared by chemical vapor infiltration using ethanol and methane as precursors. Their microstructure of the composites was analyzed by polarizing microscope. The static bending properties and fatigue behavior of prepared composites were investigated. Effects of loading cycles on bending strength and mechanical behavior of the prepared composites were studied. Results show that high texture C/C composites can be successfully fabricated by using mixed precursors. Average bending strength of the composites is 379.2 MPa, and their fatigue limit is 80.3% of the static bending load. Under cyclic loading, the flexural strength of C/C composites increases in different cycles. The bending strength is increased by 16.8% after 10 ⁵ cycles. "Yield zone" of the bending bearing capacity of the material increases firstly and then decreases with the increase of the cyclic loading, which is related to the bonding state of fiber-matrix and matrix-matrix in the fatigue process.

Key words: C/C composite, high texture, fatigue behavior

中图分类号:

TQ332

姚西媛, 李克智, 任俊杰, 张守阳. 混合前驱体制备高织构三维C/C复合材料的微观结构及疲劳行为[J]. 无机材料学报, 2020, 35(5): 589-592.

YAO Xiyuan, LI Kezhi, REN Junjie, ZHANG Shouyang. Microstructure and Fatigue Behavior of High Texture Three-dimensional C/C Composites Prepared by Mixed Precursors[J]. Journal of Inorganic Materials, 2020, 35(5): 589-592.

图/表 6

图1 3D C/C复合材料的PLM照片

Fig. 1 PLM images of 3D C/C composites (a) Fiber bundle morphology; (b) Microstructure of high texture pyrolytic carbon

图2 复合材料静态弯曲应力-应变曲线

Fig. 2 Three point bending stress-strain curves of 3D braided C/C composites

图3 3D C/C复合材料的弯曲疲劳寿命曲线

Fig. 3 S-N diagram of 3D braided C/C composites under flexural fatigue

表1 不同循环加载周次3D C/C复合材料的弯曲强度及增幅

Table 1 Increasing amplitude of flexural strength of 3D C/C composites after different cyclic loading

Cycles	0	25000	10⁵	10⁶
Strength /MPa	379.2	431.9	443.0	412.7
Strength increase /%	0	13.9	16.8	8.9

图4 3D C/C复合材料不同周次疲劳加载后的弯曲应力-应变曲线

Fig. 4 Bending stress-strain curves of C/C composites after different fatigue cyclic loading (a) n=0; (b) n=25000; (c) n=105; (d) n=106

图5 高织构3D C/C复合材料经历不同周次循环加载后的断口SEM照片

Fig. 5 Fracture morphologies of high texture 3D C/C composites after different fatigue cyclic loading (a) n=0; (b) n=25000; (c) n=105; (d) n=106

参考文献 14

[1]	LI HE-JUN . Carbon/Carbon composites.New Carbon Materials, 2001(2):79-80.
[2]	SAVAGE G . Carbon-carbon composites. Chapman and Hall, 1993: 198-209.
[3]	LI HE-JUN, XUE-HUI, FU QIAN-GANG , et al. Research status and prospect of anti-oxidation coatings for carbon/carbon composites. Journal of Inorganic Materials, 2010,25(4):337-343. DOI URL
[4]	WINDHORST T, BLOUNT G . Carbon-carbon composites: a summary of recent developments and applications. Materials & Design, 1997,18(1):11-15.
[5]	SHEEHAN J E, BUESKING K W, SULLIVAN B J . Carbon-carbon composites. Annual Review of Materials Science. 1994,24(1):19-44.
[6]	OHLHORST C W, GLASS D E, BRUCH W E , et al. Development of X-43A Mach 10 Leading Edges. The 56th International Astronautical Congress. Fukuoka, Japan, 2005.
[7]	LU QIAN, JIANG GUI-QING, LUO XIAO-GUANG , et al. Lightweight and non-ablation new TPS for X-37B aerospace vehicle. Morden Defence Technology, 2012,40(1):16-20.
[8]	DE PAUW V, REZNIK B, KALHÖFER S , et al. Texture and nanostructure of pyrocarbon layers deposited on planar substrates in a hot-wall reactor. Carbon, 2003,41(1):71-77.
[9]	ZHANG W G, HUTTINGER K J . Densification of a 2D carbon fiber preform by isothermal, isobaric CVI: kinetics and carbon microstructure. Carbon, 2003,41(12):2325-2337.
[10]	REN J J, LI K Z, ZHANG S Y , et al. Preparation of carbon/carbon composite by pyrolysis of ethanol and methane. Materials & Design, 2015,65:174-178.
[11]	FITZER E . The future of carbon-carbon composites. Carbon, 1987,25(2):163-190.
[12]	TANABE Y, YOSHIMURA T, WATANABE T , et al. Fatigue of C/C composites in bending and in shear modes. Carbon, 2004,42(8/9):1665-1670.
[13]	ZHOU HAI-HAO, LI KE-ZHI, LI HE-JUN , et al. Effect of cycles on flexural fatigue strength for 2D C/C composites. Acta Materiae Compositae Sinica, 2011,28(2):100-104.
[14]	LIAO XIAO-LING, LI HE-JUN, LI KE-ZHI . Effect of stress level on bending fatigue damage mode of 3D C/C composites. Science China Technological Sciences, 2007,37(1):53-59.

[1]	吴小军,杨杰,郑蕊,张兆甫,杨毅. 烧蚀型面结构对CVI+HPIC工艺制备针刺C/C喉衬等离子烧蚀性能的影响[J]. 无机材料学报, 2020, 35(6): 654-660.
[2]	庞生洋, 王佩瑶, 胡成龙, 赵日达, 汤素芳. 碳纤维预制体结构对C/C复合材料及其螺栓力学性能的影响[J]. 无机材料学报, 2019, 34(12): 1272-1278.
[3]	齐乐华, 舒扬, 李贺军, 黎云玉, 马海丽, 宋强. 电泳沉积CNTs掺杂C/C复合材料的微观组织与弯曲性能[J]. 无机材料学报, 2016, 31(2): 201-206.
[4]	沈学涛, 李伟, 李克智. C/C-ZrC复合材料的微观结构和力学性能研究[J]. 无机材料学报, 2015, 30(5): 459-466.
[5]	胡钢, 曾燮榕, 马俊, 邹继兆, 彭彪林. 炭/炭复合材料微观结构对热电性能的影响[J]. 无机材料学报, 2015, 30(4): 357-362.
[6]	毛金元, 刘敏, 毛杰, 邓春明, 曾德长, 徐林. 等离子喷涂制备ZrB₂-MoSi₂复合涂层及其抗氧化性能[J]. 无机材料学报, 2015, 30(3): 282-286.
[7]	李艳, 崔红, 张华坤, 嵇阿琳, 介玉洁. 热梯度CVI制备大尺寸C/C复合材料的致密化行为[J]. 无机材料学报, 2015, 30(2): 153-158.
[8]	田聪, 成来飞, 栾新刚. C/C复合材料在原子氧辐照下的结构性能演变[J]. 无机材料学报, 2013, 28(8): 853-858.
[9]	周海军, 张翔宇, 高乐, 胡建宝, 吴斌, 董绍明. ZrB₂-SiC超高温陶瓷涂层的抗烧蚀性能研究[J]. 无机材料学报, 2013, 28(3): 256-260.
[10]	林剑锋, 袁观明, 李轩科, 董志军, 张江, 张中伟, 王俊山. 一维高导热C/C复合材料的制备研究[J]. 无机材料学报, 2013, 28(12): 1338-1344.
[11]	朱焕霞, 李克智, 卢锦花, 李贺军, 王建阳. CeO₂掺杂MAS中间层对C/C-LAS接头性能的影响[J]. 无机材料学报, 2013, 28(12): 1345-1348.
[12]	任晓斌, 李贺军, 卢锦花, 郭领军, 王杰, 宋忻睿. 中间层厚度对LAS玻璃陶瓷与C/C复合材料连接强度的影响[J]. 无机材料学报, 2011, 26(8): 847-851.
[13]	孙慧慧, 李贺军, 沈学涛, 曹高翔, 强新发, 任晓斌, 付前刚. ZrB₂改性C/C复合材料微观结构及烧蚀性能的研究[J]. 无机材料学报, 2011, 26(6): 669-672.
[14]	苏哲安, 杨鑫, 黄启忠,黄伯云, 张明瑜,黄艳. 化学气相反应法制备 SiC 涂层对 C/C 复合材料力学性能影响[J]. 无机材料学报, 2011, 26(3): 233-238.
[15]	刘志成,张守阳,李贺军,李伟. 正丙醇 ICVI 制备 C/C 复合材料的组织结构及力学性能[J]. 无机材料学报, 2011, 26(2): 191-196.

混合前驱体制备高织构三维C/C复合材料的微观结构及疲劳行为

Microstructure and Fatigue Behavior of High Texture Three-dimensional C/C Composites Prepared by Mixed Precursors

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

图/表 6

参考文献 14

相关文章 15

编辑推荐

Metrics

本文评价