Development of a Multi fuel-Multi geometry-Multi atmosphere rig for testing high temperature performance of thermal/environmental barrier coatings

Kurzfassung

High temperature testing of thermal and environmental coatings under aggressive environments such as high gas/steam velocities, CMAS/VA deposition, application of thermal gradient under cyclic conditions etc. is quite challenging. Completely different experimental set ups were in use in order to simulate each condition. Sometimes, due to the limitations of the setup, a compromise has to be made in terms of sample geometry. However, testing of the engine hard ware such as vanes or blades made of alloys or ceramic composites is very complicated. A novel test set up has been designed and constructed in order to integrate all the aforementioned environments in a single set up for the first time. M3 test rig mainly contains a burner which can handle hydrogen, methane and their mixtures, inter changeable substrate holder module, a combustion chamber where coated specimen or hardware can be placed and tested under gas velocities up to 45m/s.