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Oxidation behaviour of uncoated and PDC-SiAlOC glass-coated TiAl at 750°C in dry and humid air
Applied Surface Science ( IF 6.7 ) Pub Date : 2023-05-27 , DOI: 10.1016/j.apsusc.2023.157601
Maciej Bik, Mathias Galetz, Lukas Mengis, Emma White, Wojciech Wieczorek, Klaudia Łyszczarz, Krzysztof Mroczka, Jakub Marchewka, Maciej Sitarz

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



中文翻译:

未涂层和 PDC-SiAlOC 玻璃涂层 TiAl 在 750°C 干燥和潮湿空气中的氧化行为

在这项工作中,基于 SiAlOC 玻璃的聚合物衍生陶瓷 (PDC) 涂层成功应用于 48-2-2 TiAl 合金样品。这些涂层在干燥和潮湿的空气条件下均显示出抗氧化性的显着改善。未涂层的 48-2-2 TiAl 合金材料表现出较差的抗氧化性,与大气无关。SEM、EPMA 和拉曼共聚焦成像用于研究未涂层和涂层 48-2-2 TiAl 合金在干燥和潮湿空气中的氧化机制。该涂层抑制了 Ti 向外扩散并促进了氧化铝垢的形成。

更新日期:2023-05-28
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