Preparation and properties of CNTs-Al2O3 porous ceramic composites

被引：0
|
作者：
Peng M.-H. [1 ]
Cheng X.-Y. [1 ]
Zhou B. [1 ]
Yan M.-W. [1 ]
Zhang J.-F. [1 ]
机构：
[1] College of Engineering, Shantou University, Shantou, 515063, Guangdong
来源：
Cheng, Xi-Yun (xycheng@stu.edu.cn) | 2016年 / Beijing Institute of Aeronautical Materials (BIAM)卷 / 44期
关键词：
Al[!sub]2[!/sub]O[!sub]3[!/sub; CNTs; Ice-template; Porous ceramic;
D O I：
10.11868/j.issn.1001-4381.2016.06.018
中图分类号：
学科分类号：
摘要：
Carbon nanotubes-alumina (CNTs-Al2O3) porous composite with high porosity and excellent compressive strength was prepared by ice-template technique. Effects of different CNT concentrations on microstructure and properties of the composite were investigated intensively by SEM, XRD and Raman. The results show that the bulk density, porosity and compressive strength of the composite will change with the increase of CNT content. Adding appropriate amount of CNTs will be able to increase the density of ceramic lamellae and enhance the compressive strength of the composite. However, excessive CNTs adversely will decrease the density and compressive strength of material due to the micro pores caused by CNT agglomerations anchored on the internal wall of porous ceramic. The composite reaches a maximum compressive strength of 4.52 MPa when additive amount of CNTs at 2.0% (mass fraction), which increases by 66% comparing to pure Al2O3 porous ceramic. © 2016, Journal of Materials Engineering. All right reserved.
引用
收藏
页码：117 / 122
页数：5
相关论文
共 25 条
  • [1] Li X., Wu P., Zhu D., Properties of porous alumina ceramics prepared by technique combining cold-drying and sintering, Int J Refract Met H, 41, pp. 437-441, (2013)
  • [2] Deville S., Freeze-casting of porous ceramics: a review of current achievements and issues, Adv Eng Mater, 10, 3, pp. 155-169, (2008)
  • [3] Li D., Li M., Preparation of porous alumina ceramic with ultra-high porosity and long straight pores by freeze casting, J Porous Mater, 19, 3, pp. 345-349, (2011)
  • [4] 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 Eur Ceram Soc, 30, 16, pp. 3389-3396, (2010)
  • [5] Hunger P.M., Donius A.E., Wegst U.G., Structure-property processing correlations in freeze-cast composite scaffolds, Acta Biomater, 9, 5, pp. 6338-6348, (2013)
  • [6] Iijima S., Helical microtubes of graphitic carbon, Nature, 354, 7, pp. 56-58, (1991)
  • [7] Sun L.L., Zhong Y.L., Crystallization and dielectric properties of carbon nanofiber/high-density polyethylene composites, Journal of Materials Engineering, 4, pp. 17-22, (2013)
  • [8] Nyan H.T., Meng K.Y., Jia H., Enhancement of the mechanical properties of carbon nanotube/phenolic composites using a carbon nanotube network as the reinforcement, Carbon, 42, 12-13, pp. 2774-2777, (2004)
  • [9] Wang J., Kou H., Liu X., Et al., Reinforcement of mullite matrix with multi-walled carbon nanotubes, Ceram Int, 33, 5, pp. 719-722, (2007)
  • [10] Zhang J., Zou H.L., Qing Q., Et al., Effect of chemical oxidation on the structure of single-walled carbon nanotubes, J Phys Chem B, 107, 161, pp. 3712-3718, (2003)
123