|About this Abstract
||Materials Science & Technology 2020
||High Temperature Corrosion and Degradation of Structural Materials
||Effect of Al Addition on Oxidation Behavior of a New Mo-Si-B Alloy
||Longfei Liu, John H. Perepezko
|On-Site Speaker (Planned)
||John H. Perepezko
Both isothermal and cyclic oxidation behavior of Mo-6Si-12B-(1, 2, 4, 8)Al samples have been studied. With increase of Al content, isothermal oxidation resistance gets better while cyclic oxidation resistance becomes worse. Mo-6Si-12B-4Al sample oxide layer consist of both Al-doped borosilicate glass phase and mullite phase and has the best overall oxidation performance. Al diffusion rate is two orders bigger than Si in mullite, it explains the high Al sample has best isothermal resistance. Low viscosity of Al-doped borosilicate glass provide self-healing effect which related good cyclic oxidation performance of low Al content samples.