Events () 9 RIPT 2019 (9th edition of Les Rencontres Internationales de la Projection Thermique)
Jülich, Germany - Previously held in Limoges, the 9th annual RIPT will feature invited speakers to present their findings in thermal spray technology.
Thursday, December 12 - Room 338 - 2:30 pm
"Similarities and Differences in the Design, Development and Commercialization of Advanced TBC’s and Environmental Barrier Coating Materials”
M.R. Dorfman, D. Chen, D. Dwivedi
Thermal Barrier Coating (TBC) systems started to see commercialization into the turbine market by key aerospace engine manufactures in the late 1960s-1970s. Value of these coating systems was to extend life of critical engine components designed using superalloy materials. Several improvements have been brought into TBCs over the year through material chemistry design, powder manufacturing routes, oxidation and hot corrosion resistant metallic bond coats, thermal spray technologies (Plasma, HVOF) along with greater understanding of the thermal spray process and critical process variables that influence the performance of the TBC systems. In addition, advancements in material characterization methods have also played an important role towards the current successful status of TBCs in the gas turbine industries. Needless to say that the lessons learned over the years cannot be underestimated, and today, 50 years later, we are seeing the transformation of many of these thermal barrier applications into the new era of protective coatings- Environmental Barrier coatings (EBCs). This presentation attempt to provide an overview in terms of the similarities and differences of these various coating systems. In particular, the presentation will address requirements of EBCs when applied to Ceramic Matrix Composites (CMCs)- the base material for next generation turbine engine components, and the challenges seen today compared to the challenges that a material designer faced 50 years ago when developing TBCs to superalloys.
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