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In situ generated ß-Yb¿Si¿O¿ environmental barrier coatings to protect non-oxide silicon-based ceramics in gas turbines

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In face of an accelerating climate change, the reduction and substitution of fossil fuels is crucial to decarbonize energy production. Gas turbines can operate with versatile fuel sources like natural gas and future fuels such as hydrogen and ammonia. In a next future, thermal efficiencies above 65% are expected to be achieved by implementing non-oxide silicon-based (i.e. Si¿N¿, SiC and SiC/SiC) ceramic components. However, water vapor is one of the main combustion products, which leads to rapid corrosion due to the volatilization of the protective SiO¿ layer above 1200 °C. Hence, an in si...