Fabrication and technological properties of nanoporous spinel/forsterite/zirconia ceramic composites |
| |
| Affiliation: | 1. Department of Chemistry, Faculty of Science, Ain Shams University, Abbassia, Cairo, Egypt;2. Egyptian Petroleum Research Institute, Nasr City 11727, Cairo, Egypt;1. Institute of Chemistry, University of Campinas, UNICAMP, P.O. Box 6154, 13084–971 Campinas, SP, Brazil;2. Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS Institute of Information Technology, Lahore, Pakistan;3. UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK |
| |
| Abstract: | In this work, nanoporous spinel/forsterite/zirconia ceramic composites were fabricated at 1600 °C for 2 h. The influence of zirconia content (up to 10 mass%) on the technological properties, nanopores formation, phase compositions, microstructure and thermal diffusivity of nanoporous ceramic composites was investigated. Nanospinel and nanoforsterite powders were synthesized via a modified co-precipitation and sol–gel techniques, respectively. Results indicated that apparent porosity of the fired nanoporous ceramic composites is mostly in the range 14.26–56.14% with the average pores diameter 35.8 nm. Using of nanopowders (spinel and forsterite) as the staring materials were achieved high mechanical (cold crushing strength ～ 235–164 MPa) and elastic (Young’s modulus ～ 123.6–4.5 GPa) properties of the prepared nanoporous ceramic composites. Microstructure analysis exhibited all of the crystalline phases and pores of the nanoporous ceramic composites are in the nanosize (35–40 nm). These nanoporous ceramic composites are promising porous ceramic materials for using in advanced applications due to their excellent combination properties. |
| |
| Keywords: | Nanoporous Ceramic matrix composites Mechanical properties Thermal diffusion Microstructure |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
