Please use this identifier to cite or link to this item:
https://doi.org/10.1016/j.solidstatesciences.2009.04.001
Title: | Mullitization behavior and microstructural development of B2O3-Al2O3-SiO2 mixtures activated by high-energy ball milling | Authors: | Kong, L.B. Zhang, T.S. Ma, J. Boey, F.Y.C. |
Keywords: | Anisotropic grain growth Boron oxide Mechanical milling Mullite |
Issue Date: | Aug-2009 | Citation: | Kong, L.B., Zhang, T.S., Ma, J., Boey, F.Y.C. (2009-08). Mullitization behavior and microstructural development of B2O3-Al2O3-SiO2 mixtures activated by high-energy ball milling. Solid State Sciences 11 (8) : 1333-1342. ScholarBank@NUS Repository. https://doi.org/10.1016/j.solidstatesciences.2009.04.001 | Abstract: | This paper reports on phase formation and microstructural development of mullite, derived from B2O3-Al2O3-SiO2 mixtures activated with different milling methods. It is found that the addition of B2O3 has a positive effect on mullite phase formation from the mixture of Al2O3-SiO2, which can be qualitatively attributed to the fact that B2O3 brought out higher nucleation density and enhanced reaction kinetics. Anisotropic grain growth of mullite was not observed in the unmilled mixture since mullite phase formation occurred after densification. Dense and interlocking microstructures of mullite ceramics were produced from the mixture activated with stainless steel milling media, whereas mullite whiskers were formed in the samples milled with tungsten carbide media. The high-energy ball milling refined the precursors and thus reduced the mullitization temperature. As a result, anisotropic microstructures and mullite whiskers could be derived from the milled mixtures. This way to produce anisotropic microstructures of mullite ceramics is very simple and requires temperatures much lower than those reported in the literature. This method is believed to be useful to fabricate reinforced mullite or mullite-related materials via in-situ anisotropic grain growth. © 2009 Elsevier Masson SAS. All rights reserved. | Source Title: | Solid State Sciences | URI: | http://scholarbank.nus.edu.sg/handle/10635/115193 | ISSN: | 12932558 | DOI: | 10.1016/j.solidstatesciences.2009.04.001 |
Appears in Collections: | Staff Publications |
Show full item record
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.