Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/93946
Title: | Evolution on phase composition and properties of alumina-based ceramics fabricated from high-titania special-grade natural bauxite micropowder | Authors: | Du, R Fu, L Gu, H Or, SW Huang, A Lv, R Luo, Q |
Issue Date: | 1-Sep-2021 | Source: | Ceramics international, 1 Sept. 2021, v. 47, no. 17, p. 24574-24581 | Abstract: | In this study, Al2O3-based ceramics were fabricated with natural bauxite powder as the raw material. The phase compositions evolution behavior during the heat treatment and its influence on the properties of fabricated ceramics were investigated. With increasing heat treatment temperature, the sintering degree of high-titania special-grade bauxite became better. The samples showed decreased porosity, increased bulk density, Vickers hardness, fracture toughness and flexural strength. However, when the heat temperature increased to 1650 °C, decomposition of tieillite occurs in sample, leading to increased Al2O3 and TiO2 content in the liquid phase. Corundum and mullite grains with anisotropic growth appeared in the samples, leading to a decrease in the density, the Vickers hardness and flexural strength of samples decreased consequently. However, those anisotropic grains could prolong the crack propagation path and improve the fracture toughness of the material. | Keywords: | Al2O3-Based ceramics Natural bauxite Phase compositions Properties |
Publisher: | Pergamon Press | Journal: | Ceramics international | ISSN: | 0272-8842 | EISSN: | 1873-3956 | DOI: | 10.1016/j.ceramint.2021.05.177 | Rights: | © 2021 Elsevier Ltd and Techna Group S.r.l. All rights reserved. © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. The following publication Du, R., Fu, L., Gu, H., Or, S. W., Huang, A., Lv, R., & Luo, Q. (2021). Evolution on phase composition and properties of alumina-based ceramics fabricated from high-titania special-grade natural bauxite micropowder. Ceramics International, 47(17), 24574-24581 is available at https://doi.org/10.1016/j.ceramint.2021.05.177. |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Fu_Evolution_Phase_Composition.pdf | Pre-Published version | 1.67 MB | Adobe PDF | View/Open |
Page views
51
Last Week
1
1
Last month
Citations as of Apr 28, 2024
Downloads
16
Citations as of Apr 28, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.