ULTIMATE Refractory Alloy Innovations for Superior Efficiency (RAISE)
Project Innovation + Advantages:
GE Research has proposed transformational material solutions to potentially enable a gas turbine blade alloy-coating system capable of operating at a turbine inlet temperature of 1800 °C for more than 30,000 hours. GE aims to develop a (1) niobium (Nb)-based alloy that can operate at 1300 °C (2372 °F), (2) coating system consisting of a novel oxidation resistant bond coat compatible with the new Nb-based alloy, and (3) thermal barrier coating for improved durability that can operate at 1700 °C (3092 °F) and a scalable manufacturing process for producing internally cooled gas turbine blades with the new alloy. Application of the new technologies to existing combined cycle gas turbines in the U.S. could increase the thermal efficiency by approximately 7%. If the benefit could be applied to the entire installed base of combined cycle gas generation across the country, it would yield $100 billion of net present value and reduce CO2 emissions by 23 million metric tons (equivalent to emissions from 5 million cars).
Combining development of new ultrahigh temperature materials with compatible coatings and manufacturing technologies has the potential to increase gas turbine efficiency up to 7%, which will significantly reduce wasted energy and carbon emissions.