Vol. 52 No. 4 (2015)   New Products & Technologies
Technical Papers

Development of Advanced Materials and Manufacturing Technologies for High-efficiency Gas Turbines

HIDETAKA OGUMA
KOJI TSUKIMOTO
SANEYUKI GOYA
YOSHIFUMI OKAJIMA
KOUICHI ISHIZAKA
EISAKU ITO

The market for gas turbine combined cycle (GTCC) power generation is expected to grow on a long-term basis as the cleanest and most economic thermal power generating system that can coexist with renewable energy. To further achieve further efficiency, it is essential to improve the properties of turbine component materials and develop manufacturing technologies for building the complicated structures required by advanced blade design. This report presents the development of technologies including alloy design and casting, coating, welding repair, and cooling-hole drilling processes, as material and manufacturing technologies for the higher-temperature application of gas turbines.