Gas turbine coatings – An overview

Effect of heat treatment on deformation and mechanical properties of 8 mol% yttria-stabilized zirconia by Berkovich nanoindentation

“…In particular, the top ceramic coatings have been applied to reduce the surface temperature of turbine blades, control on-demand air-cooling, and thus extend TBC service life, and improve aero-engine efficiency. However, TBCs are susceptible to various life limiting issues associated with their operating environment conditions including erosion [9][10][11], corrosion [12,13], oxidation [14,15], sintering [3,16,17], and foreign object damage (FOD) [18,19].…”

On the performance and failure mechanism of thermal barrier coating systems used in gas turbine blade applications: Influence of bond coat/superalloy combination

“…In addition to providing oxidation resistance by means of an intermediate metallic bond coat, the outermost layer of a ceramic insulator allows the turbine inlet temperature to be increased by up to 200°C [1][2][3][4][5]. This results in higher energy conversion efficiency, less fuel consumption, more power output and cleaner environment.…”

Microstructure and wear resistance of one-step in-situ synthesized TiN/Al composite coatings on Ti6Al4V alloy by a laser nitriding process

“…Two different surface modification methods by using thermal spraying [6][7][8] or high-energy laser have been usually used to develop the surface coatings to improve the erosion resistance of titanium alloys. Because of the nature of the coating process, the microstructures of thermal sprayed coatings were often characterized by lamellar structure with the existence of various pores, microcracks, splat boundaries, and some unmelted particles.…”