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American Journal of Materials Research

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Effect of TiO₂ and MnO Addition on the Sintering and Corrosion Behavior of Alumina

American Journal of Materials Research
Vol.4 , No. 4, Publication Date: Aug. 29, 2017, Page: 27-31

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Authors

[1]	Shahab Khamneh Asl, Department of Materials Engineering, Faculty of Mechanics, Tabriz University, Tabriz, Iran.
[2]	Dariush Rasouli, Department of Materials Engineering, Faculty of Mechanics, Tabriz University, Tabriz, Iran.

Abstract

The effect of additives on the densification behavior of alumina has been investigated. Fast milling was used for the mixing of these additives in order to achieve a uniform distribution and thereafter homogeneous microstructure on sintering. Sintered density and microstructures were evaluated along with the mechanical properties. Effect of manganese oxide and titanium oxide as additives on sintering of alumina is described. Manganese oxide and titanium oxide dopants lead to achieving theoretical density. The alumina +2wt% MnO₂ or 1wt% TiO₂ system resulted in high densification giving a uniform microstructure at temperature low as 1300°C. The higher density and lower porosity of doped alumina increased the corrosion resistivity of alumina rings.

Keywords

Alumina, Liquid Phase Sintering, TiO₂, MnO

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