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- 2018
球磨对碳纳米管增强泡沫铝基复合材料压缩与吸能性能的影响
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Abstract:
因碳纳米管（CNTs）具有优异的性能，被认为是金属基复合材料理想的增强体，因此如何制备得到CNTs增强体均匀分散的金属基复合材料一直是本领域的研究热点。本文通过原位化学气相沉积（CVD）、短时球磨和填加造孔剂的工艺成功制备了CNTs增强的泡沫铝基复合材料，着重研究了球磨过程对复合泡沫铝的微观形貌、压缩性能和吸能性能的影响规律。结果表明，随着球磨时间的延长，CNTs的分散性提高并逐步嵌入铝基体中，使复合泡沫铝的组织均匀性得到改善。相对于未球磨的含CNTs 3.0wt%的复合泡沫材料，当球磨时间增加至90 min时，复合泡沫铝的孔壁硬度、屈服强度和吸能能力分别提高了67%、126%和343%。 Due to its superior properties, carbon nanotubes (CNTs) have been regarded as a promising reinforcement for the metal matrix composites (MMCs). How to fabricate the MMCs with homogeneous CNTs reinforcement is a hot research field. In the present study, the CNTs reinforced Al composite foams were successfully prepared through a combination of in-situ chemical vapor deposition (CVD), short time ball milling and the space holder method. The effects of ball milling time on the micro morphology, compressive property and energy absorption capacity of the CNTs/Al composite foams were investigated. The results show that with the ball milling time increasing, the microstructure uniformity of the composite foams is improved as a result of the enhanced CNTs dispersion in the Al matrix. Besides, the CNTs are deeply embedded inside the Al matrix after 90 min ball milling. Moreover, compared to the non-ball-milling 3.0wt% CNTs/Al composite foams, when the ball milling time increases to 90 min, the pore wall hardness, yield strength and energy absorption capacity of the composite foams are increased by 67%, 126% and 343%, respectively. 国家自然科学基金（51301198；51531004）
| [1] | YANG X, SHI C, HE C, et al. Synthesis of uniformly dispersed carbon nanotube reinforcement in Al powder for preparing reinforced Al composites[J]. Composites Part A:Applied Science & Manufacturing, 2011, 42(11):1833-1839. |
| [2] | CHOI H J, SHIN J H, BAE D H. The effect of milling conditions on microstructures and mechanical properties of Al/MWCNT composites[J]. Composites Part A:Applied Science & Manufacturing, 2012, 43(7):1061-1072. |
| [3] | BANHART J, SEELIGER H W. Aluminum foam sandwich panels:Manufacture, metallurgy and applications[J]. Advanced Engineering Materials, 2008, 10(9):793-802. |
| [4] | BANHART J. Metal foams:Production and stability[J]. Advanced Engineering Materials, 2006, 8(9):781-794. |
| [5] | XIA X, CHEN X, ZHANG Z, et al. Compressive properties of closed-cell aluminum foams with different contents of ceramic microspheres[J]. Materials and Design, 2014, 56(4):353-358. |
| [6] | DU Y, LI A B, ZHANG X X, et al. Enhancement of the mechanical strength of aluminum foams by SiC nanoparticles[J]. Materials Letters, 2015, 148:79-81. |
| [7] | BANERJEE S, HEMRAJ-BENNY T, WON S S. Covalent surface chemistry of single-walled carbon nanotubes[J]. Advanced Materials, 2005, 17(1):17-29. |
| [8] | LIU J, QU Q, LIU Y, et al. Compressive properties of Al-Si-SiC composite foams at elevated temperatures[J]. Journal of Alloys and Compounds, 2016, 676:239-244. |
| [9] | WONG E W, SHEEHAN P E, LIEBER C M. Nanobeam mechanics:Elasticity, strength, and toughness of nanorods and nanotubes[J]. Science, 1997, 277(5334):1971-1975. |
| [10] | SALVETAT-DELMOTTE J P, RUBIO A. Mechanical properties of carbon nanotubes:A fiber digest for beginners[J]. Carbon, 2002, 40(10):1729-1734. |
| [11] | HE C, ZHAO N, SHI C, et al. An approach to obtaining homogeneously dispersed carbon nanotubes in Al powders for preparing reinforced Al-matrix composites[J]. Advanced Materials, 2007, 19(8):1128-1132. |
| [12] | DUARTE I, VENTURA E, OLHERO S, et al. A novel approach to prepare aluminum-alloy foams reinforced by carbon-nanotubes[J]. Materials Letters, 2015, 160:162-166. |
| [13] | ZHANG Z, DING J, XIA X, et al. Fabrication and characterization of closed-cell aluminum foams with different contents of multi-walled carbon nanotubes[J]. Materials Design, 2015, 88:359-365. |
| [14] | ALDOSHAN A, KHANNA S. Effect of relative density on the dynamic compressive behavior of carbon nanotube reinforced aluminum foam[J]. Materials Science and Engineering A, 2017, 689:17-24. |
| [15] | WANG J, YANG X, ZHANG M, et al. A novel approach to obtain in-situ growth carbon nanotube reinforced aluminum foams with enhanced properties[J]. Materials Letters, 2015, 161:763-766. |
| [16] | YANG K, YANG, X, LIU E, et al. Elevated temperature compressive properties and energy absorption response of in-situ grown CNT-reinforced Al composite foams[J]. Materials Science and Engineering A, 2017, 690:294-302. |
| [17] | YANG X, LIU E, SHI C, et al. Fabrication of carbon nanotube reinforced Al composites with well-balanced strength and ductility[J]. Journal of Alloys and Compounds, 2013, 563(1):216-220. |
| [18] | 于英华, 李智超, 刘敬福. 多孔泡沫铝性能研究现状及应用前景展望[J]. 辽宁工程技术大学学报, 2003, 22(2):259-260. YU Y H, LI Z C, LIU J F. Research present situation and prospect for application on porous foam aluminum[J]. Journal of Liaoning Technical University, 2003, 22(2):259-260(in Chinese). |
| [19] | DENG C F, WANG D Z, ZHANG X X, et al. Processing and properties of carbon nanotubes reinforced aluminum composites[J]. Materials Science and Engineering A, 2007, 444(1-2):138-145. |
| [20] | CHOI H J, KWON G B, LEE G Y, et al. Reinforcement with carbon nanotubes in aluminum matrix composites[J]. Scripta Materials, 2008, 59(3):360-363. |
| [21] | TJONG S C. Recent progress in the development and properties of novel metal matrix nanocomposites reinforced with carbon nanotubes and graphene nanosheets[J]. Materials Science and Engineering Report, 2013, 74(10):281-350. |
| [22] | ESAWI A, MORSI K. Dispersion of carbon nanotubes (CNTs) in aluminum powder[J]. Composites Part A:Applied Science & Manufacturing, 2007, 38(2):646-650. |
| [23] | GUO C, ZOU T, SHI C, et al. Compressive properties and energy absorption of aluminum composite foams reinforced by in-situ generated MgAl2O4 whiskers[J]. Materials Science and Engineering A, 2015, 645:1-7. |
