硅酸盐学报

纤维增强冰模板氧化铝多孔陶瓷的微观结构与力学性能

作者：李玲玉1 杜海燕1 2 刘家臣1 胡小侠1 2 陈小平2 王文杰1 武劲宇1

单位：(1. 天津大学材料科学与工程学院先进结构陶瓷实验室天津 300072 2. 天津大学分析测试中心天津300072)

关键词：冰模板孔形貌纤维增韧力学性能

分类号：TQ133.1

出版年,卷(期):页码：2019,47(9):0-0

DOI：

摘要：

采用定向冷冻冰模板法制备了具有定向直通孔结构的纤维增韧氧化铝多孔陶瓷以及纯颗粒氧化铝多孔陶瓷，研究了固含量和纤维引入对材料微观结构及力学性能的影响。结果表明：随着固含量从15% (体积分数)提高至40%，材料的微观形貌从层状孔到枝状孔再到各向同性孔变化，层间距逐渐减小直到消失；材料的强度从7 MPa提高至70 MPa；纤维的引入增大了层间距并在层状孔壁间形成桥联，从而降低了材料的密度；在低固含量时，纤维的引入改变了直通孔多孔材料的应力应变行为，形成应力平台区，使得冰模板多孔陶瓷从脆性断裂转变为渐进式断裂，材料的抗压强度和断裂能量吸收能力提高。

基金项目：

国家自然科学基金(51472176)。

作者简介：

参考文献：

[1] LIU R, XU T, WANG C A, et al. A review of fabrication strategies and applications of porous ceramics prepared by freeze-casting method[J]. Ceram Int, 2016, 42(2): 2907–2925.

[2] PARLETT M M, MCKITTRICK J, MEYERS M A, et al. Hierarchical porous materials: catalytic applications[J]. Chem Soc Rev, 2013, 42(9): 3876–3893.

[3] JORI S, JEROME L, STEPHANE R, et al. Fabrication of ice-templated tubes by rotational freezing: Microstructure, strength, and permeability[J]. J Eur Ceram Soc, 2017, 37(6): 2423–2429.

[4] SYLVAIN D, EDUARDO S, RAI K, et al. Freezing as a path to build complex composites[J]. Science, 2006, 311(27): 515–518.

[5] MACAN J, GAJOVI? A, IVANKOVI? H, et al. Porous zirconium titanate ceramics synthesized by sol-gel process[J]. J Eur Ceram S℃, 2009, 29(4): 691–696.

[6] 刘海燕, 刘家臣, 张鹏宇, 等. 蛋白质发泡法制备多孔氧化锆陶瓷. 稀有金属材料与工程. 2007, 36(1): 590-592.

LIU Haiyan, LIU Jiachen, ZHANG Pengyu, et al. Rare Metal Mat Eng (in Chinese), 2007, 36(1): 590–592.

[7] POT℃ZEK M. Gel-casting of alumina foams using agarose solutions[J]. Ceram Int, 2008, 3(34): 661–667.

[8] SYLVAIN D, EDUARDO S, et al. Ice-templated porous alumina structures[J]. Acta Mater. 2007, 55(6): 1965–1974.

[9] SYLVAIN D. Freeze-casting of porous ceramics: A review of current achievements and issues[J]. Adv Eng Mater, 2008, 10(3): 155–168.

[10] HU L, WANG C A, HUANG Y, et al. Control of pore channel size during freeze casting of porous YSZ ceramics with unidirectional aligned channels using different freezing temperatures[J]. J Eur Ceram Soc, 2010, 30(16): 3389–3396.

[11] MAHESH B, DIPANKAR G. Effects of porosity and strain rate on the uniaxial compressive response of ice-templated sintered macroporous alumina[J]. Acta Mater, 2018, 1(149): 179–192.

[12] HUAGER P M, DONIUS A E, WEGST U G. Structure- property- processing correlations in freeze-cast composite scaffolds[J]. Acta Biomater, 2013, 9(5): 6338–6348.

[13] PAOLO. C. Conventional and novel processing methods for cellular ceramics[J]. Phil Trans R Soc, 2006, 1838(364): 109–124.

[14] LI Y Y, LI Z Y, LI X T, et al. Influence of fibers on the microstructure and compressive response of directional ice-templated alumina ceramics[J]. J Eur Ceram Soc, 2018, 10(38): 3595–3602.

[15] VALENTINA N, HRISHIKESH A B, BERND G, et al. On the development of ice-templated silicon carbide scaffolds for nature-inspired structural materials[J]. Acta Mater, 2013, 18(61): 6948–6957.

[16] JORDI S, SYLVAIN D, CHRISTIAN G, et al. Mechanical properties and failure behavior of unidirectional porous ceramics[J]. Sci Rep, 2016, 6: 24326.

[17] FERRARO C, ESTHER G.T, VICTORIA G.R, et al. Light and strong SiC newworks[J]. Adv Func Mater, 2016, 10(26): 1636–1645.

[18] 彭美华, 程西云, 周彪, 等. CNTs-Al2O3多孔陶瓷复合材料的制备与性能. 材料工程. 2016, 44(6): 117–122.

PENG Meihua, CHENG Xiyun, ZHOU Biao, et al. J Mater Eng (in Chinese), 2016, 44(6): 117–122.

[19] DIPANKAR G, AARON W, ROBERT. D.C. Uniaxial quasistatic and dynamic compressive response of foams made from hollow glass microspheres[J]. J Eur Ceram Soc, 2016, 36(3): 781–789.

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