Articolo in rivista, 2022, ENG, 10.1016/j.jeurceramsoc.2022.02.003

Magnesium fluoride (MgF2) - A novel sintering additive for the preparation of transparent YAG ceramics via SPS

Necina, Vojtech; Hostasa, Jan; Pabst, Willi; Vesely, Martin

Department of Glass and Ceramics, University of Chemistry and Technology, Prague (UCT Prague), Technická 5, Prague 6, 166 28, Czech Republic CNR ISTEC, National Research Council of Italy, Institute of Science and Technology for Ceramics, Via Granarolo 64, Faenza, 48018 RA, Italy Department of Organic Technology, University of Chemistry and Technology, Prague (UCT Prague), Technická 5, Prague 6, 166 28, Czech Republic

The effect of MgF2 as a sintering additive for the preparation of YAG ceramics via spark plasma sintering (SPS) is investigated with promising results, as nearly complete densification (0.58% porosity) is achieved at relatively low temperature and moderate pressure. Higher temperature and dwell time resulted in a translucent/trans-parent body. On the other side, significant grain growth was observed with MgF2 addition.

Journal of the European Ceramic Society 42 (7), pp. 3290–3296

Keywords

Yttrium aluminum garnet, Transparent ceramics, Spark plasma sintering (SPS), Sintering additives, Magnesium fluoride

CNR authors

Hostasa Jan

CNR institutes

ISTEC – Istituto di scienza e tecnologia dei materiali ceramici