METHOD FOR PRODUCING GAS TURBINES, GAS TURBINE AND METHOD FOR OPERATING GAS TURBINE PLANTS

Durch die Verwendung verschiedener keramischer Schichten können verschiedene Konfigurationen von Gasturbinen hergestellt werden, die dann optimiert sind für ein jeweiliges Einsatzgebiet von Grundlastbetrieb oder Spitzenlastbetrieb. Producing a second gas turbine, comprises removing at least one first ceramic thermal barrier coating starting from first turbine blades of a first gas turbine; and applying a second ceramic thermal barrier coating on de-coated first turbine blades to produce second turbine blades (7); and/or applying a second ceramic thermal barrier coating on a novel second turbine blades, where the second ceramic thermal barrier coating differs from the first ceramic thermal barrier coating, and the factors include e.g. different coating thickness, different porosity and/or different ply-speed. Producing a second gas turbine, comprises removing at least one first ceramic thermal barrier coating starting from first turbine blades of a first gas turbine; and applying a second ceramic thermal barrier coating on de-coated first turbine blades, to produce second turbine blades; and/or applying a second ceramic thermal barrier coating on a novel second turbine blades, where the second ceramic thermal barrier coating differs from the first ceramic thermal barrier coating, and the factors include: different coating thickness with the difference in the reduced and enlarged coating thickness of at least 50mm; different porosity with the absolute difference in the reduced or enlarged porosity of at least 2%; and/or different ply-speed, preferably a single- or double layering speed of the ceramic thermal barrier coating. The novel second- and/or the second turbine blades are mounted in the second gas turbine. Independent claims are also included for: (1) gas turbine comprising turbine blades, which have a single-layer ceramic thermal barrier coating with a porosity of 18% +- 4%; and (2) operating a gas turbine system, comprising altering the type of ceramic layers of the turbine blades of the gas turbine.