全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

无压渗透法制备Al/AlN复合材料及其性能

DOI: CNKI:11-1801/TB.20110720.1417.019, PP. 166-171

Keywords: AlN多孔坯体,Al/AlN复合材料,无压渗透,力学性能,热学性能

Full-Text   Cite this paper   Add to My Lib

Abstract:

在常压下通过熔渗工艺将AlSi7Mg合金渗入由AlN粉末模压成形、预烧所获得的预烧结坯中,得到了不同Al含量的Al/AlN复合材料。采用X射线衍射仪对复合材料的相组成进行了测试,采用金相显微镜和SEM对其显微组织进行了观测,并对不同Al含量的Al/AlN复合材料的维氏硬度、抗弯强度、热膨胀系数及导热系数等进行了测试分析。结果表明:在900℃下,N2气氛中通过熔渗工艺可以制备出相对密度高于98.5%的Al/AlN复合材料,且在整个制备过程中AlN坯体尺寸几乎没有变化;Al/AlN复合材料的硬度和强度随Al含量的增加而降低,导热系数和热膨胀系数则随Al含量增加有所增加;Al体积分数为38%和62%时,Al/AlN复合材料维氏硬度分别为HV715和HV203,抗弯强度分别为492MPa和388MPa,室温导热系数分别为73W/(m·K)和120W/(m·K),室温至200℃的平均线膨胀系数分别为8.60×10-6K-1和1.11×10-5K-1;Al/AlN复合材料的热膨胀系数与Al含量的关系符合Kerner模型。

References

[1]  Zhao M, Wu G H, Zhu D Z, et al. Effects of thermal cycling on mechanical properties of AlNp/Al composite [J]. Materials Letters, 2004, 58(12/13): 1899-1902.
[2]  Wang J H, Yi D Q, Su X P, et al. Properties of submicron AlN particulate reinforced aluminum matrix composite [J]. Materials and Design, 2009, 30(1): 78-81.
[3]  Chedru M, Vicens J, Chermant J L, et al. Aluminium-aluminium nitride composites fabricated by melt infiltration under pressure [J]. Journal of Microscopy, 1999, 196: 103-112.
[4]  Lee L G, Ma H A, Lee X L, et al. Preparation and characterization of Al/AlN composites sintered under high pressure [J]. Journal of Materials Science, 2007, 42(22): 9460-9464.
[5]  Li D F, Huang J L, Chang S T. The mechanical properties of AlN/Al composites manufactured by squeeze casting [J]. Journal of the European Ceramic Society, 2002, 22(2): 253-261.
[6]  Lee K B, Sim H S, Kwon H. Fabrication of Al/AlN composites by in situ reaction [J]. Journal of Materials Science, 2006, 41(19): 6347-6352.
[7]  黄 强, 金燕萍, 顾明元. 电子封装用金属基复合材料的制备 [J]. 材料导报, 2002, 16(9): 18-19. Huang Qiang, Jin Yanping, Gu Mingyuan. Processing routes of metal matrix composite for electronic packaging [J], Materials Review, 2002, 16(9): 18-19.
[8]  崔 岩, 陈续东. 低膨胀、超高模量铝基复合材料及其无压浸渗制备加工技术[J]. 中国有色金属学报, 2004, 14(S3): 33-36. Cui Yan, Chen Xudong. Aluminium matrix composites with low coefficient of thermal expansion and ultra-high modulus and their near net-shape fabrication technology based on pressureless infiltration [J]. The Chinese Journal of Nonferrous Metals, 2004, 14(S3): 33-36.
[9]  Aghajanian M K, Rocazella M A, Burke J T, et al. The fabrication of metal matrix composites by a pressureless infiltration technique [J]. Journal of Materials Science, 1991, 26(2): 447-454.
[10]  Cook A J, Werner P S. Pressure infiltration casting of metal matrix composites [J]. Materials Science & Engineering A, 1991, A144: 189-206.
[11]  Nagendra N, Rao B S, Jayaram V. Microstructures and properties of Al2O3/Al-AlN composites by pressureless infiltration of Al-alloys [J]. Materials Science & Engineering A, 1999, A269(1/2): 26-37.
[12]  Liu J W, Zheng Z X, Wang J M, et al. Pressureless infiltration of liquid aluminum alloy into SiC preforms to form near-net-shape SiC/Al composites [J]. Journal of Alloys and Compounds, 2008, 465(1/2): 239-243.
[13]  McCormick A L, Aghajanian M K, Marshall A L. The effect of particle size, particle loading and thermal processing conditions on the properties of alumina reinforced aluminum metal matrix composites [J]. Ceramic Engineering and Science Proceedings, 2010, 30(5): 105-111.
[14]  Rhee S K. Wetting of ceramics by liquid aluminum [J]. Journal of the American Ceramic Society, 1970, 53(7): 386-389.
[15]  Rodríguez-Reyes M, Pech-Canul M I, Parras-Medecigo E E, et al. Effect of Mg loss on the kinetics of pressureless infiltration in the processing of Al-Si-Mg/SiCp composites [J]. Materials Letters, 2003, 57(13/14): 2081-2089.
[16]  Wang S R, Wang Y Z, Wang Y, et al. Microstructure and infiltration kinetics of Si3N4/Al-Mg composites fabricated by pressureless infiltration [J]. Journal of Materials Science, 2007, 42(18): 7812-7818.
[17]  Geiger A L, Jackson M, Low-expansion MMCs boost avionics [J]. Advanced Materials & Processes, 1989, 136(7): 23-28.
[18]  Turner P S, Res J. Thermal expansion stresses in reinforced plastics [J]. Journal of Research of the National Bureau of Standards, 1946, 37: 238-241.
[19]  Kerner E H. The elastic and thermo-elastic properties of composite media [J]. Proceedings of the Physical Society, 1956, 69: 808-810.
[20]  Davis L C, Artz B E. Thermal conductivity of metal-matrix composites [J]. Journal of Applied Physics, 1995, 77(10): 4954-4960.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133