Microstructures andMechanical Behavior of C/C Composites Prepared by ICVI Using n-propanol asPrecursor

doi:10.3724/SP.J.1077.2011.00191

Abstract

Abstract: Two dimension needle-punched carbonfiber felts with an initial bulk density of 0.43 g/cm³ weredensified by isothermal-isobaric chemical vapor infiltration (ICVI) at 1050,1100, 1150℃and total pressure of 6kPa, using n-propanoldiluted by nitrogen as the precursor of pyrolytic carbon. The bulk density ofC/C composite after densified for 96h were 1.64 g/cm³, 1.68g/cm³and 1.69/cm³, respectively. Bulk densities of the infiltrated sampleswere determined as a function of infiltration time. The flexural strength wasinvestigated by three-point bending test. Texture and fracture surface morphologyof the samples were studied by polarized light microscope (PLM) and scanningelectron microscope (SEM). A layer of midium-textured carbon followed by alayer of high-textured carbon matrix were formed at 1050 and 1150 ℃. WhileC/C composites with pure high-textured pyrolytic carbon matrix was obtained at1100℃, with the flexural strength of 199.24MPa. No oxidationtrace was found on the surface of carbon fiber from PLM and SEM observation. Consequently,n-propanol is a promising precursor in CVI process for the densification of high-performanceC/C composites.

Key words: C/Ccomposites, n-propanol, ICVI, microstructures

CLC Number:

TB332

LIU Zhi-Cheng, ZHANGShou-Yang, LI He-Jun, LI Wei. Microstructures andMechanical Behavior of C/C Composites Prepared by ICVI Using n-propanol asPrecursor[J]. Journal of Inorganic Materials, 2011, 26(2): 191-196.

References

[1] 李贺军. 炭/炭复合材料. 新型炭材料, 2001, 16(2): 79-80.

[2] 黄伯云, 熊翔. 高性能炭/炭航空制动材料的制备技术. 湖南: 湖南科技技术出版社, 2007: 28-36.

[3] Reznik B, Gerthsen D, Zhang W G, et al. Texture changes in the matrix of an infiltrated carbon fiber felt studied by polarized light microscopy and selected area electron diffraction. Carbon, 2003, 41(2): 369-384.

[4] Zhang W G, Hüttinger K J. Densification of a 2D carbon fiber perform isothermal, isobaric CVI: kinetics and carbon microstructure. Carbon, 2003, 41(12): 2325-2337.

[5] Zhang W G, Hu Z J, Hüttinger K J. Chemical vapor infiltration of carbon fiber felt: optimization of densification and carbon microstructure. Carbon, 2002, 40(14): 2529-2545.

[6] Zhang S Y, Yan X F, Li H J, et al. Deposition of carbon using ethanol as precursor in chemical vapor infiltration. Journal of Inorganic Materials. 2009, 24(5): 1073-1076.

[7] 颜夏峰, 张守阳, 李贺军, 等. 乙醇热解制备C/C复合材料探索研究. 新型炭材料, 2008, 23(4): 314-318.

[8] Alessio Frassoldati, Alberto Cuoci, Tiziano Faravelli. An experimental and kinetic modeling study of n-propanol and iso-propanol combustion. Combustion and Flame, 2010, 157(1): 2-16.

[9] Zhou W D, Zhang J S. Ultraviolet photo dissociation dynamics of 1-propanol and 2-propanol by high-nryderg-atom time-of-flight (HRTOF) Technique. Chinese Journal of Chemical Physics, 2002, 3(15): 233-236.

[10] 王晶. C2-C4醇的低温热解及低温等离子体的研究. 合肥: 中国科学技术大学博士论文, 2008.

[11] 和永岗, 李克智, 魏建锋, 等(HE Yong-Gang, et al). 2D C/C复合材料微观结构与力学性能的研究. 无机材料学报(Journal of Inorganic Materials), 2010, 25(2):-173-176.

[12] Benzinger W, Hüttinger K J. Chemistry and kinetics of chemical vapor in-ltration of pyrocarbon–VI mechanical and structural properties of in-ltrated carbon -ber felt. Carbon, 1999, 37(6): 1311-1322.

[13] 张伟刚. 化学气相沉积—从烃类气体到固体碳. 北京: 科学出版社.

[1]	XU Puhao, ZHANG Xiangzhao, LIU Guiwu, ZHANG Mingfen, GUI Xinyi, QIAO Guanjun. Microstructure and Mechanical Properties of SiC Joint Brazed by Al-Ti Alloys as Filler Metal [J]. Journal of Inorganic Materials, 2022, 37(6): 683-690.
[2]	WANG Meng-Qian, JIA Lin-Tao, LI Ai-Jun, PENG Yu-Qing, ZHANG Fang-Zhou. Preparation of Boron Nitride Coating from BCl₃-NH₃-H₂-N₂ Precursor by Chemical Vapor Deposition [J]. Journal of Inorganic Materials, 2018, 33(11): 1179-1185.
[3]	ZHANG Cui-Ping, GAO Xiang-Wei, RU Hong-Qiang, SUN Wei-Kang, ZHU Jing-Hui, ZONG Hui. Effect of Forming Pressure on Microstructure and Mechanical Properties of SiC/TiB₂ Composites [J]. Journal of Inorganic Materials, 2017, 32(5): 502-508.
[4]	SUN Qing-Lei, ZHOU Hong-Qing, QIAN-Lei, WANG Ya-Zhou, ZHU Hai-Kui, YUE Zhen-Xing. Effects of MgO, SrO and La₂O₃ Co-doping on Structure and Properties of (Zr_0.8Sn_0.2)TiO₄ Ceramics [J]. Journal of Inorganic Materials, 2016, 31(8): 812-818.
[5]	LI Lei, LIANG Li-Zhi, WU Heng, LIANG Shuang, ZHU Ying-Ying, ZHU Xin-Hua. Advances on Low-dimensional Perovskite Manganite Nanostructures [J]. Journal of Inorganic Materials, 2015, 30(4): 337-344.
[6]	ZHU Xin-Hua, LI Ai-Dong, LIU Zhi-Guo. Applications of Scanning Transmission Electron Microscopy (STEM) in the New Generation of High-K Gate Dielectrics [J]. Journal of Inorganic Materials, 2014, 29(12): 1233-1240.
[7]	ZHENG Yi-Fan, ZHAO Na, ZHANG Jie, YU Xiao-Ye, MO Wei-Min. Microstructures and Properties of WC/Natural Zeolite Composites [J]. Journal of Inorganic Materials, 2012, 27(2): 129-133.
[8]	LI Hai-Liang, LI He-Jun, LU Jin-Hua, LI Ke-Zhi, YAO Dong-Jia, WU Heng. Microstructures and Bending Property of Mesophase Based C/C Composites withAir Oxidation Process [J]. Journal of Inorganic Materials, 2011, 26(2): 197-202.
[9]	LI Jia-Ke, LIU Lei, LIU Xin. Joining of SiC Ceramic by 22Ti-78Si High-temperature Eutectic Brazing Alloy [J]. Journal of Inorganic Materials, 2011, 26(12): 1314-1318.
[10]	WU Jia-Min, LÜ Wen-Zhong, LIANG Jun, WANG Xiao-Hong. Microwave Dielectric Properties of 0.9Al₂O₃-0.1TiO₂Ceramics Prepared by Aqueous Gelcasting [J]. Journal of Inorganic Materials, 2011, 26(1): 102-106.
[11]	WU Heng,LI He-Jun,WANG Yong-Jie,FU Qian-Gang,HE Zi-Bo,WEI Jian-Feng. Effect of Deposition Temperature on Microstructures and Properties of MoSi₂ Coatings Prepared by Low Pressure Chemical Vapor Deposition [J]. Journal of Inorganic Materials, 2009, 24(2): 392-396.
[12]	SUN Le-Min,LI He-Jun,ZHANG Shou-Yang. Microstructural Characteristics of Pitch-Based Carbon-Carbon Composites [J]. Journal of Inorganic Materials, 2000, 15(6): 1111-1116.
[13]	XU Jun-Hua,LI Ge-Yang,GU Ming-Yuan. Microstructures and Superhardness Effects of NbN/TaN Nano-multilayer Films [J]. Journal of Inorganic Materials, 2000, 15(3): 561-564.
[14]	CHEN Wei-Wu,SUN Wei-Ying,YAN Dong-Sheng. Microstructures of Ln-α-Sialon-AlN-Polytypoid (Ln=Y, Y+Sm and Sm)Dual-phase Ceramics [J]. Journal of Inorganic Materials, 2000, 15(3): 441-446.
[15]	CHEN Wei-Wu,SUN Wei-Ying,YAN Dong-Sheng. Microstructural Characteristic of α -AlN-polytypoids Multi-phase Sialon [J]. Journal of Inorganic Materials, 1999, 14(6): 887-892.