@article{b0b89aba573c4362a992754a264460e5,
title = "Evolution on phase composition and properties of alumina-based ceramics fabricated from high-titania special-grade natural bauxite micropowder",
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 = "AlO-Based ceramics, Natural bauxite, Phase compositions, Properties",
author = "Riqing Du and Lvping Fu and Huazhi Gu and Or, {Siu Wing} and Ao Huang and Renxiang Lv and Qiong Luo",
note = "Funding Information: The authors are thankful for the financially support from the National Natural Science Foundation of China (Grant No. 51802231 ), the Hong Kong Scholars Program (Grant No. XJ2020023 ), the China Postdoctoral Science Foundation (Grant No. 2017M622535 ) and the WUST National Defence Pre-research Foundation (Grant No. GF201905 ). Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd and Techna Group S.r.l. Funding Information: The authors are thankful for the financially support from the National Natural Science Foundation of China (Grant No. 51802231), the Hong Kong Scholars Program 2020 (Grant No. G-YZ4E/ XJ2020023), the China Postdoctoral Science Foundation (Grant No. 2017M622535) and the WUST National Defence Pre-research Foundation (Grant No. GF201905). Funding Information: The authors are thankful for the financially support from the National Natural Science Foundation of China (Grant No. 51802231 ), the Hong Kong Scholars Program (Grant No. XJ2020023 ), the China Postdoctoral Science Foundation (Grant No. 2017M622535 ) and the WUST National Defence Pre-research Foundation (Grant No. GF201905 ). Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd and Techna Group S.r.l.",
year = "2021",
month = sep,
day = "1",
doi = "10.1016/j.ceramint.2021.05.177",
language = "English",
volume = "47",
pages = "24574--24581",
journal = "Ceramics International",
issn = "0272-8842",
publisher = "Elsevier Ltd",
number = "17",
}