Near Net Shape Turbine Blade Repair Using a Joining and Coating Hybrid Process (B01)

• Subject Area: Coating and Surface Technology ; Metallurgical, Thermal and Thermomechanical Treatment of Materials
• Term: from 2010 to 2021
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 119193472

The hybrid process which was developed in the first two funding periods will be developed further, with regards to the functionality of the overall jet engine system. This reproducibility of this process will also be investigated, and thus the resulting process reliability. Furthermore, the thermal barrier coating (TBC) will be integrated in this hybrid technology in the third funding period. Since it was shown in the second funding period that the aluminium impregnation was performed successfully by thermal spraying, it seems to be consistent to carry out the common heat treatment (brazing and aluminising) of the coating system filler-metal/MCrAlY/Al/TBC as a continuous process in a shielding gas furnace.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 871: Regeneration of Complex Capital Goods
• Applicant Institution: Gottfried Wilhelm Leibniz Universität Hannover
• Project Heads: Professor Dr.-Ing. Hans Jürgen Maier; Professor Dr.-Ing. Kai Möhwald