CMAS and High Temperature Resistant LaMgAl11O19 TBC Coatings Using a Microwave Based Uniform-Melt-State Plasma Process (UniMelt)

Amastan, in collaboration with the University of Connecticut, proposes to produce high temperature phase stable and CMAS resistant coatings of lanthanum magnesium hexaaluminate (LMHA) material as a suitable substitute to YSZ top coat for thermal barrier coating (TBC) applications. In phase I feasibility effort, Amastan demonstrated high temperature (1600 C) phase stable LMHA coatings that are phase pure upon annealing using its Uniform Melt State Process (UniMelt) spray process. In Phase II, Amastan will focus on two other precursor chemistries that have shown promising preliminary results, as well as increase process power to achieve the desired coating characteristics. Furthermore, the coating will be optimized to meet or exceed the specifications for TBC systems required in high temperature operations and CMAS resistance applications. Amastan will also optimize the production cost and team up with a turbine manufacturer to conduct tests on turbine components at the manufacturers testing rig. This step will position Amastans technology towards commercialization.