电泳沉积时间对SiCf/SiC复合材料性能的影响

摘要/Abstract

摘要： 针对电泳沉积结合先驱体浸渍裂解的方法制备SiC_f/SiC复合材料过程,探讨沉积时间对SiC纤维及SiC_f/SiC复合材料性能的影响规律。实验结果得出:随电泳沉积时间的延长,SiC纤维逐渐被腐蚀,致使其单丝强度下降;而在SiC纤维表面覆盖PyC涂层可以有效地保护SiC纤维,由于悬浮液中的通电作用,PyC涂层与SiC纤维的界面结合强度略有降低,纤维单丝强度随电泳时间的延长先增大后减小。5 min的电泳沉积结合9个周期的PIP得到了SiC_f/SiC复合材料最大的弯曲强度为731 MPa,随后其力学性能随着沉积时间的延长先降低后略微回升;SiC_f/SiC复合材料的热导率随沉积时间的延长先增大后减小,10 min电泳沉积得到了常温下SiC_f/SiC复合材料的最大热导率为4.658 W/(m·K)(25 ℃)。

关键词: 电泳沉积, 先驱体浸渍裂解, SiC_f/SiC复合材料

Abstract: This paper pays attention to the hybrid method of Electrophoretic Deposition (EPD) and Precursor Infiltration and Pyrolysis (PIP) for fabricating the SiC_f/SiC composites. Influence of deposition time on SiC_f/SiC composites is analyzed. It is concluded that SiC fibers would be gradually corroded with EPD time prolonged, and the fibers′ peak strength would decrease as well. While, the existence of PyC interphases in front of the SiC fibers would effectively protect the SiC fibers. Because of the electric power of EPD suspension, interfacial strength between PyC interphases and SiC fibers would drop slightly. Therefore, the peak strength of SiC fibers would increase at first then decrease with EPD time. 5 min EPD and 9 cycles PIP result in a maximum bending strength of 731 MPa for SiC_f/SiC composites. After that, its mechanical property first dropped then grew a little with EPD time. Thermal conductivity of SiC_f/SiC composites rose first and then fell with EPD time. With 10 min EPD, thermal conductivity of SiC_f/SiC composites in room temperature reaches the maximum of 4.658 W/(m·K).

Key words: EPD, PIP, SiC_f/SiC composites

中图分类号:

TB332

侯慧宁, 周新贵, 李明远. 电泳沉积时间对SiC_f/SiC复合材料性能的影响[J]. 玻璃钢/复合材料, 2018, 0(1): 60-67.

HOU Hui-ning, ZHOU Xin-gui, LI Ming-yuan. INFLUENCE OF ELECTROPHORETIC DEPOSITION TIME ON SiC_f/SiC COMPOSITES PROPERTIES[J]. Fiber Reinforced Plastics/Composites, 2018, 0(1): 60-67.

参考文献

[1] 石德珂. 材料科学基础(第2版)[M]. 北京: 机械工业出版社, 2003.
[2] Kim T T. Thermo-mechanical characterization of silicon carbide-silicon carbide composites at elevated temperatures using a unique combustion facility[J]. Dissertations & Theses-Gradworks, 2009.
[3] D. Anson, D. W. Richerson. The benifits and challenges of the use of ceramics in gas turbines. In: M. van. Roode, M. K. Ferber, D. W. Richerson, eds. Ceramic Gas Turbine Component Development and Characterization[M]. New York: ASME press, 2002.
[4] Zinkle S J, Snead L L. Designing radiation resistance in materials for fusion energy[J]. Annual Review of Materials Research, 2014, 44(1): 241-267.
[5] Katoh Y, Snead L L, Jr C H H, et al. Current status and critical issues for development of SiC composites for fusion applications[J]. Journal of Nuclear Materials, 2007, s 367-370(5): 659-671.
[6] Taylor N P, Forrest R A. Neutronic aspects of the safety and environmental performance of silicon carbide as blanket structural material[J]. Fusion Engineering & Design, 2001, 54(3): 617-625.
[7] Jones R H, Steiner D, Heinisch H L, et al. Radiation resistant ceramic matrix composites[J]. Journal of Nuclear Materials, 1997, 245(2-3): 87-107.
[8] Sawan M, Sharpe P, Smolentsev S. Overview of fusion nuclear technology in the US[J]. Fusion Engineering & Design, 2006, 81(1): 33-43.
[9] Nozawa T, Hinoki T, Hasegawa A, et al. Recent advances and issues in development of silicon carbide composites for fusion applications[J]. Journal of Nuclear Materials, 2010, 41(17): 622-627.
[10] R. W. Rice, S. W. Freiman, P. F. Bencher. Grain-size dependence of fracture energyin ceramic: I, Experiment [J]. Journal of American Ceramic Society, 1981, 64(6): 345-350.
[11] Eaton H E, Linsey G D, More K L, et al. EBC protection of SiC/SiC composites in the gas turbine combustion environment[C]. 2001: V004T02A018-V004T02A018.
[12] Roode M V. Ceramic gas turbine development: Need for a 10-year plan[J]. Journal of Engineering for Gas Turbines & Power, 2010, 132(1): 279-288.
[13] Roode M V, Price J, Kimmel J, et al. Ceramic matrix composite combustor liners: a summary of field evaluations[J]. Journal of Engineering for Gas Turbines & Power, 2005, 129(1): 283-292.
[14] Langenbrunner N, Weaver M, Dunn M G, et al. Dynamic response of a metal and a CMC turbine blade during a controlled rub event using a segmented shroud[J]. Journal of Engineering for Gas Turbines & Power, 2015, 137(6).
[15] Sayano A, Sutoh C, Suyama S, et al. Development of a reaction-sintered silicon carbide matrix composite[J]. Journal of Nuclear Materials, 1999, 271-272(5): 467-471.
[16] Snead L L, Jones R H, Kohyama A, et al. Status of silicon carbide composites for fusion[J]. Journal of Nuclear Materials, 1996, s 233-237(96): 26-36.
[17] Nannetti C A, Ortona A, Pinto D A D, et al. Manufacturing SiC-fiber-reinforced SiC matrix composites by improved CVI/slurry infiltration/polymer impregnation and pyrolysis[J]. Journal of the American Ceramic Society, 2004, 87(7): 1205-1209.
[18] Novak S, Rade K, Knig K, et al. Electrophoretic deposition in the production of SiC/SiC composites for fusion reactor applications[J]. Journal of the European Ceramic Society, 2008, 28(14): 2801-2807.
[19] Novak S, Draic′ G, Knig K, et al. Preparation of SiC_f/SiC composites by the slip infiltration and transient eutectoid (SITE) process[J]. Journal of Nuclear Materials, 2010, 399(2): 167-174.
[20] Yin J, Lee S H, Feng L, et al. Fabrication of SiC_f/SiC composites by hybrid techniques of electrophoretic deposition and polymer impregnation and pyrolysis[J]. Ceramics International, 2016, 42(14): 16431-16435.
[21] A. Ivekovic, G. Drazic, S. Novak. Densification of a SiC-matrix by electrophoretic deposition and polymer infiltration and pyrolysis process [J]. Journal of the European Ceramic Society, 2011, (31): 833-840.
[22] S. Novak, A. Ivekovic. Fabrication of SiC_f/SiC composites by SITE-P process [J]. Journal of Nuclear Materials, 2012, (427): 110-115.
[23] A. Ivekovic′, S. Novak. Electrophoretic (Infiltration) deposition of thick conductive fiber preforms[J]. Journal of the Electrochemical Society, 2015, 162(11): D3049-D3056.
[24] Partho Sarkar, Patrick S. Nicholson. Electrophoretic deposition (EPD): mechanisms, kinetics, and application to ceramics[J]. Journal of the American Ceramic Society, 1996, 79(8): 1987-2002.
[25] Stoll E, Mahr P, Krüger H G, et al. Fabrication technologies for oxide-oxide ceramic matrix composites based on electrophoretic deposition[J]. Journal of the European Ceramic Society, 2006, 26(9): 1567-1576.