催化FBCVI制备碳纳米纤维增强碳/碳复合材料的组织与力学性能研究

王建阳; 李克智; 卢锦花; 李伟; 李贺军

催化FBCVI制备碳纳米纤维增强碳/碳复合材料的组织与力学性能研究

1.
西北工业大学材料学院, 西安 710072

基金项目:

国家自然基金项目(51002124)

国家“973”项目计划项目(2011CB605806)资助

详细信息

作者简介:
王建阳(1988-)，硕士研究生，研究方向为自增韧C/C复合材料制备工艺，526959778@qq.com;李克智(联系人)，教授，博士生导师，likezhi@nwpu.edu.cn

王建阳(1988-)，硕士研究生，研究方向为自增韧C/C复合材料制备工艺，526959778@qq.com;李克智(联系人)，教授，博士生导师，likezhi@nwpu.edu.cn

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出版历程
- 收稿日期: 2013-01-16
- 刊出日期: 2015-06-10

Microstructure and Mechanical Properties of Carbon Nanofibers Reinforced Carbon/Carbon Composites Prepared by Catalyze FBCVI

1.
School of Materials Science, Northwestern Polytechnical University, Xi'an 710072

摘要

摘要: 采用薄膜沸腾气相沉积(film-boiling chemical vapor infiltration,FBCVI)工艺,制备原位碳纳米纤维增强碳/碳复合材料(carbon nanofibers-reinforced carbon/carbon composites,CNFs-C/C))。研究了致密化过程中CNFs的生长情况和催化剂的引入对材料组织结构和力学性能的影响。研究表明,致密化前期,原位生长CNFs困难;随着沉积时间延长,CNFs大量增多并被碳基体包覆,CNFs主要为碳纳米线(carbon nanowires,CNWs)。CNFs-C/C的碳基体结构为粗糙层(RL),且存在大量的生长锥。相比于未加催化剂的试样,CNFs-C/C的弯曲强度和模量分别提高了30.9%和39.1%,断裂模式为假塑性断裂。
- 碳纳米纤维 /
- C/C复合材料 /
- FBCVI /
- 组织结构 /
- 力学性能
Abstract: In-situ grown carbon nanofibers reinforced carbon /carbon (CNFs-C /C) composites were prepared by catalyze film-boiling chemical vapor infiltration (FBCVI). After investigating the growing process of CNFs, the influence of catalyst on microstructure and mechanical properties of C /C composites was studied in this paper. The results show that the growth of CNFs at the beginning of deposition was very difficult. As the deposition time increased, the number of CNFs increased sharply. The CNFs were wrapped by PyC matrix after deposition process.The PyC type was ＲL with a great quantity of cone-shaped PyC. The mechanical strength and modulus of CNFs-C / C composites increased by 30.9% and 39.1% respectively, compared to the pure one. The fracture mode of CNWs-C /C composites is pseudo plastic fracture.
- carbon carbon composites /
- carbon nanofibers /
- catalysts /
- chemical vapor infiltration /
- experiments

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参考文献(12)

[1]	Lau K T, Hui D. Effectiveness of using carbon nanotubes as reinforcements for advanced composite structures [J]. Carbon,2002,40(9): 1605-1606
[2]	Xiao P, Lu X F, Liu Y Q, et al. Effect of in situ grown carbon nanotubes on the structure and mechanical properties of unidirectional carbon /carbon composites[J].Materials Science and Engineering A, 2011, 528 (8): 3056-3061
[3]	李克智,宋强,武立言, 等. 碳纳米管含量对炭炭复合材料组织及力学性能的影响[J]. 无机材料学报, 2011,27(5): 1001-1007 Li K Z, Song Q, Wu L Y, et al. Influence of carbon nanotube content on microstructures and mechanical properties of carbon /carbon composite [J]. Chinese Journal of Inorganic Chemistry,2011,27(5): 1001-1007 (in Chinese)
[4]	Gong Q M, Li Z, Bai X D, et al. Thermal properties of aligned carbon nanotube /carbon nanocomposites[J]. Materials Science and Engineering A, 2004, 384: 209-214
[5]	Gong Q M, Li Z, Zhou X W, et al. Synthesis and characterization of in situ grown carbon nanofiber /nanotube reinforced carbon /carbon composites [J]. Carbon, 2005,43: 2426-2429
[6]	Zhang J C, Luo R Y, Wu X W, et al. Fabrication and characteristics of carbon nanofiber-reinforced carbon / carbon composites [J]. Chemical Vapor Deposition, 2009,15: 8-14
[7]	Deng H L, Li K Z, Li H J, et al. Densification behavior and microstructure of carbon /carbon composites prepared by chemical vapor infiltration from xylene at temperatures between 900 and 1250 ℃[J]. Carbon,2011, 49: 2561-2570
[8]	Wang J P, Qian J M, Qiao G J, et al. Improvement of film boiling chemical vapor infiltration process for fabrication of large size C /C composite[J]. Materials Letter, 2006,60: 1269-1272
[9]	Delhaès P, Trinquecoste M, Lines J F, et al. Chemical vapor infiltration of C /C composites: fast densification processes and matrix characterizations [J]. Carbon, 2005,43: 681-691
[10]	李新涛. 化学液相汽化沉积制备炭 /炭复合材料工艺及性能研究[D]. 西安: 西北工业大学,2012 Li X T. Process and properties of carbon/carbon composites prepared by chemical liquid-vapor infiltration[D]. Xi' an: Northwestern Polytechnical University,2012 (in Chinese)
[11]	Li X T, Li K Z, Li H J, et al. Microstructures and mechanical properties of carbon /carbon composites reinforced with carbon nanofibers /nanotubes produced in situ[J]. Carbon,2007,45: 1662-1668
[12]	邓海亮. C /C 复合材料 FBCVI 制备工艺及摩擦学行为研究[D]. 西安: 西北工业大学,2012 Deng H L. Process and tribological behavior of carbon/ caarbon composites prepared by film boiling chemical vapor infiltration[D]. Xi'an: Northwestern Polytechnical University, 2012 (in Chinese)