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Co-dopants effect on translucent SiAlON ceramics production

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Abstract

SiAlON is a ceramic alloy (solid solution of Si3N4-Al2O3) which is discovered in the early 1970s. Since then, SiAlON ceramics have been used for structural applications due to its excellent fracture toughness and strength, outstanding chemical stability, and wear resistance. However, this material has also an enormous potential for functional applications. In this study, the effects of co-dopants on the IR transmittance of α-SiAlON ceramics were investigated. Compositions were designed by using two different cation combinations (Dy3+-La3+) and (Y3+-La3+). Starting powder mixtures were sintered by means of spark plasma sintering (SPS) technique. Microstructure and phase characterization of the samples was carried out by scanning electron microscope (SEM) and X-ray diffraction (XRD), respectively. The infrared transmission of α-SiAlON ceramics was measured by Fourier transform infrared spectroscopy (FTIR) in the range of 2000–7000 cm−1. The results were discussed according to the relationship between density, phase composition, microstructure, and optical properties.

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Funding

This study received financial support from The Scientific & Technological Research Council of Turkey (Project: 111M427).

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Authors and Affiliations

  1. Department of Metallurgy and Materials Engineering, Ondokuz Mayıs University, Kurupelit Campus, 55139, Samsun, Turkey

    Suna Avcioglu

  2. Department of Materials Science and Engineering, Eskisehir Technical University, Iki Eylul Campus, 26555, Eskisehir, Turkey

    Semra Kurama

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  1. Suna Avcioglu
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  2. Semra Kurama
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Correspondence to Semra Kurama.

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Avcioglu, S., Kurama, S. Co-dopants effect on translucent SiAlON ceramics production. J Aust Ceram Soc 56, 1397–1404 (2020). https://doi.org/10.1007/s41779-020-00480-2

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