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Open AccessProceedings

The Effect of the Addition of Y2O3 on the Microstructure of Polycrystalline Alumina Ceramics

1
Department of Materials Science and Engineering, Çanakkale Onsekiz Mart University, 17100 Çanakkale, Turkey
2
Department of Bioengineering and Materials Engineering, Çanakkale Onsekiz Mart University, 17100 Çanakkale, Turkey
*
Author to whom correspondence should be addressed.
Presented at the 2nd International Research Conference on Sustainable Energy, Engineering, Materials and Environment (SEEME), Mieres, Asturias, Spain, 25–27 July 2018.
Proceedings 2018, 2(23), 1407; https://doi.org/10.3390/proceedings2231407
Published: 2 November 2018
In the scope of this study, a powder mixture was prepared that contained 3 Al2O3-Y2O3 consisting of 99.99% pure Al2O3 and aluminum oxide of 65–67% and 70% by weight of 99.999% pure Y2O3 powders. After the powders were weighed on a precision scale, the milling process was carried out in a vibratory disc mill. For the granulation, 3 powder mixtures that were subject to sintering were sieved to a size of less than 106 µm in a powder sieve shaker. The powders were shaped with a cold isostatic press after this step and the 3 acquired samples were sintered for 12 h under a temperature of 1923 K. Selected physical and mechanical behaviors were taken by evaluating microhardness measurements, bending strength XRD analysis and electron microscope images of the 3 sintered samples. The changes in the Y2O3 additive and phase composition, microstructure, and mechanic properties were examined.
Keywords: alumina; yttrium aluminum garnet; composites; energy efficiency; sintering; mechanical properties; microstructure alumina; yttrium aluminum garnet; composites; energy efficiency; sintering; mechanical properties; microstructure
MDPI and ACS Style

Abalı, S.; Karaçam, C.U. The Effect of the Addition of Y2O3 on the Microstructure of Polycrystalline Alumina Ceramics. Proceedings 2018, 2, 1407.

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