Hot Corrosion Evaluation of Coated Turbine Materials

An environmental burner rig test has been developed to support the development and evaluation of oxidation and sulfidation resistant alloys and coating systems. This test facility has been extensively utilized in the development of inherently sulfidation resistant alloys and the evaluation of various alloy/coating systems. Environment burner rig tests have shown that the simple aluminide coatings on C101 provide exceptional resistance to sulfidation attack. These alloy/coating systems are, in fact, competitive with some of the more expensive overlay coating systems.