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Researchers at the University of Virginia develop advanced coatings to boost turbine engine efficiency and reduce emissions.
A University of Virginia-led research team has made significant progress in developing coatings that enable turbine engines to function at higher temperatures, leading to increased efficiency, reduced emissions, and lower fuel consumption. The coatings, created with rare earth oxides, represent an innovative solution to the limits of current materials, which have constrained the temperatures that turbines can safely withstand.
Currently, turbines rely on nickel-based superalloys or ceramic composites, which cap operating temperatures at around 2,200°F and 2,577°F respectively. The Department of Energy (DOE) seeks a breakthrough that will push this limit to nearly 3,300°F for enhanced efficiency. By experimenting with refractory metal alloys combined with rare earth oxides like yttrium, erbium, and ytterbium, the UVA team has developed a single-layer coating that resists oxidation and offers high durability.
Collaborative Innovation and Future Impact
The project relied on interdisciplinary expertise, including machine learning and simulation models, to identify and test material combinations. Collaborating with UVA’s ExSiTE Lab, researchers analyzed the thermal resistance and structural strength of the coatings. Although additional refinement is needed, the findings are promising: more durable, heat-resistant coatings could significantly enhance performance in power generation and aviation while benefiting the environment and lowering operational costs for industries and consumers alike.
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