Vol. 49, Issue 2, pp. 355-364

Vol. 49 Issue 2 pp. 355-364

On the possibility of using arc plasma melting technique in preparation of transparent yttria ceramics

Andrzej Kruk, Benedykt R. Jany, Karolina Owczarczyk, Dominika Madej

Keywords

plasma arc melting, transparent ceramic, yttrium oxide, optical properties

Abstract

A state-of-the-art fabrication of Y2O3 transparent ceramic by arc plasma synthesis using commercial micron-size powders is reported. The morphological observations of the surface by scanning electron microscope shows that a dense microstructure can be obtained. Arc melted samples are made of a white core and transparent layer. X-ray diffraction studies and also Raman spectroscopy confirm that only one phase occurred in the core and in the transparent layer, and that the physicochemical difference exists. The obtained Y2O3 shell ceramics have pores but also relative low absorbance in the VIS-NIR region after double side polishing. The optical band gap and the refractive index are reported. It is concluded that arc plasma melting allows obtaining quickly (10 minutes) dense and highly transparent polycrystalline samples, especially in the VIS-IR spectral region.

Vol. 49
Issue 2
Article No: 15
pp. 355-364

2.14 MB
OPTICA APPLICATA - a quarterly of the Wrocław University of Science and Technology, Faculty of Fundamental Problems of Technology