Oxidation behaviour of uncoated and PDC-SiAlOC glass-coated TiAl at 750 °C in dry and humid air

• DOI: 10.1016/j.apsusc.2023.157601
• Publication Date: 2023-05-27T23:06:29Z
• Authors: Maciej Bik; Mathias Galetz; Lukas Mengis; Emma White; Wojciech Wieczorek; Klaudia Łyszczarz; Krzysztof Mroczka; Jakub Marchewka; Maciej Sitarz
• Keywords: ddc:620; Engineering & allied operations; info:eu-repo/classification/ddc/620; 620

In this work polymer derived ceramic (PDC) coatings, based on SiAlOC glasses, were successfully applied 48-2-2 TiAl alloy samples. These coatings showed a significant improvement in oxidation resistance both dry and humid air conditions. The uncoated material poor independent of the atmosphere. SEM, EPMA Raman confocal imaging used to investigate mechanisms coated air. coating suppressed outward Ti diffusion promoted alumina scale formation.