Title
University Voucher MSR_Faisal Nazeer
Code
I/12
Solver
Start year
2025
End year
2028
Provider
Moravian-Silesian Region
Category
Obecná forma
Type
Vouchery pro univerzity – Moravskoslezský kraj
Summary
Aircraft turbine engines require higher operating temperatures in their hot sections to increase overall fuel efficiency while reducing harmful byproducts. Silicon based ceramics matrix composites (CMCs) are promising materials for hot section components due to their exceptional low density, high temperature mechanical, thermal, and chemical properties. However, SiCf/SiC based CMCs' surface
silica scale can quickly degrade in hot engine moisture containing surroundings, leading to significant strength degradation and recession. To address this issue, coating materials with low thermal conductivity, phase stability, matched coefficient of thermal expansion (CTE) to SiCf/SiC, and excellent resistance to calcium-magnesium-alumina-silicate (CMAS) and water vapor are required.
Recently, high entropy rare earth silicates are being developed as potential thermal/environmental barrier coating (T/EBC) materials and have caught the significant attention of researchers to address the issue at hand more precisely. This necessitates moving from single rare earth silicate to multicomponent adoption, which expands the potential and versatility of T/EBC development. Keeping this concept in mind this project involves the use of different high entropy rare earth silicates materials for coating on SiCf/SiC substrate via more convenient and cost-effective laser surface roughness and atmospheric plasma spray coating method and studying their anticorrosion properties after coating on SiCf/SiC substrate. Techniques are employed to examine coating surface morphology and high temperature corrosion resistance against CMAS and water vapor attack at high temperature. The results will highlight the merit of multicomponent high entropy rare earth silicate coating engineering in advanced T/EBC materials for crucial corrosion resistance improvement in high temperature engine applications.
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