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为了得到一种轻质、高强度、耐烧灼的新型碳泡沫材料,以无定形AlN为添加剂,在空心微球/网络复合型碳泡沫的基础上,采用退火热处理工艺成功地制备出了AlN/C复合泡沫材料.通过扫描电镜、透射电镜对样品进行表征,测试结果表明无定形AlN在碳微球的表面重结晶为AlN晶须,其直径大约为50nm左右,长度10m以上,具有较大的长径比.X-射线衍射峰证明样品石墨化程度高,且AlN晶须为六方结构.X-射线光电子能谱测试发现在287.5eV处有较明显的CN峰出现,这表明AlN和碳泡沫在界面处通过CN键结合.同时,对其力学性能进行测试,通过分析应力-应变测试结果,AlN/C复合泡沫材料的压缩强度为40.27MPa,相对碳泡沫材料而言提高了近一个数量级.测试结果表明,AlN晶须显著增强了碳泡沫的压缩强度,这种新型复合泡沫材料有望应用于各种抗压减震航空材料.
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关键词:
- AlN/C复合泡沫材料 /
- 扫描电镜 /
- X-射线衍射 /
- X-射线光电子能谱
Order to get a new type carbon foam material, AlN/C composite foam was successfully synthesized by using AlN as an additive and hollow microspheres/reticulated carbon foam as a basement thought the annealing high-temperature heated process. The prepared samples were characterized by Scanning Electron Microscope (SEM) and Transmission Electron Microscope (TEM). The results of test indicated that AlN whiskers with diameter of 50nm, length large than 10 um and larger length-diameter ratio were prepared by amorphous AlN recrystallization at the surface of carbon microspheres. Diffraction peaks of XRD demonstrated that the sample was characterized as graphitization and AlN whiskers were hexagonal structure. XPS test showed that there was an obvious peak of CN bond on 287.5 eV, which revealed that AlN and carbon foam through CN bond combined on their interfaces. Meanwhile, it was showed that AlN/C foam material's compression strength was 40.27 MPa through the analysis of the stress-strain of mechanical performance, which increased nearly one order of magnitude compared with the carbon foam material. The results of test showed that compressive strength of carbon foam was obvious reinforced by AlN whisker. And this new composite foam has infinite applications value in various kinds of resist compression and absorbing aeronautical materials.-
Keywords:
- AlN/C composite foam /
- scanning electron microscope /
- X-ray Diffraction /
- X-ray photoelectron spectroscopy
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[17] Drum C M, Mitchell J W 1964 Appl. Phys. Lett. 4 164
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[19] Moulder J F, StickleWF, Sobol P E, Bomben K D 1992 Handbookof X-ray Photoelectron Spectroscopy (Minnesota: Perkin-ElmerCorp.) p40
[20] Li W 2005 Inorganic Whisker (Beijing:Chemical Industry Press)p34 (in Chinese) [李武 2005 无机晶须 (北京: 化学工业出版社) 第34页]
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[1] Shi Z H, Li K Z, Li H J, Wang C, Li Z Q 2005 J. Funct. Mater. 361944 (in Chinese) [石振海, 李克智, 李贺军, 王闯, 李照谦 2005 功能材料 36 1944]
[2] Lü H M, Shi Z H, Zhao C, Wei P 2010 Acta Phys. Sin. 59 7956 (in Chinese) [吕惠民, 石振海, 赵超, 魏萍 2010 59 7956]
[3] Klett J, Hardy R, Romine E, Walls C, Burchell T 2000 Carbon 38953
[4] Bruneten E, Tallaron C, Gras-Naulin N 2002 Carbon 40 1919
[5] Li W Q, Zhang H B, Xiong X A 2011 J. Mater. Sci. 46 1143
[6] Gan L H, Liu M X, Wang X, Tian C 2008 J. Tongji Univ. (NaturalScience) 36 1552(in Chinese) [甘礼华, 刘明贤, 王曦, 田辞 2008 同济大学学报 (自然科学版) textbf{36 1552]
[7] Xiao N, Ling Z, Wang L P, Zhou Y, Qiu J S 2011 Carbon 49 1052
[8] Luo R Y, Ni Y F, Li J S, Yang C L, Wang S B 2011 Mater. Sci.Eng. A 528 2023
[9] Li W Q, Zhang H B, Xiong X, Feng X 2010 Mater. Sci. Eng. A527 2993
[10] Lü H M, Chen G D, Yan G J, Ye H G 2007 Acta Phys. Sin. 562808 (in Chinese) [吕惠民, 陈光德, 颜国君, 耶红刚 2007 56 2808]
[11] Lü H M, Shi Z H, Chen G D 2009 Acta Phys. Sin. 58 6403 (in Chinese) [吕惠民, 石振海, 陈光德 2009 58 6403]
[12] Kohn J A, Cotter P G, Potter R A 1956 Am. Mineral. 41 355
[13] Wang Y D, Zhou H P, Qiao L, Jin H B, Fu R L 2001 Acta Metal.Sin. 37 109 (in Chinese) [汪雨荻, 周和平, 乔梁, 金海波, 傅仁利 2001 金属学报 37 109]
[14] Tang Y B, Liu Y Q, Sun C H 2007 J. Mater. Res. 22 2711
[15] Radwan M, Bahgat M 2007 J. Mater. Process. Technol. 181 99
[16] Xu Z J, Chu R Q 2010 Nanomaterials and Nanotechnology (Beijing:Chemical Industry Press) p11 (in Chinese) [徐志军, 初瑞清 2010 纳米材料与纳米技术 (北京: 化学工业出版社) 第11页]
[17] Drum C M, Mitchell J W 1964 Appl. Phys. Lett. 4 164
[18] Yan G J, Chen G D, Lü H M 2006 Acta Chim. Sin. 64 1688 (in Chinese) [颜国君, 陈光德, 吕惠民 2006 化学学报 64 1688]
[19] Moulder J F, StickleWF, Sobol P E, Bomben K D 1992 Handbookof X-ray Photoelectron Spectroscopy (Minnesota: Perkin-ElmerCorp.) p40
[20] Li W 2005 Inorganic Whisker (Beijing:Chemical Industry Press)p34 (in Chinese) [李武 2005 无机晶须 (北京: 化学工业出版社) 第34页]
[21] Masaya K, Junya Y A, Yasushi S 2007 Carbon 45 1105
[22] Wu W, Du J H, Lin Y R, Chow L C, Bostanci H, Saarloos B A, Rini D P 2011 J. Heat Transfer 133 054504
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