Patent ID: 8449941

Claim:
A method for formation of a thermal barrier coating on a gas turbine during operation thereof, the method comprising: adding, during the operation of the gas turbine, an organic compound containing silicon to a fuel under a first condition, so as to form a base layer on the surface of a part coming into contact with a combustion gas of the fuel in the gas turbine; and adding the organic compound containing silicon to the fuel under a second condition, so as to form, above the formed base layer, a porous layer having more pores than the base layer, wherein: the first condition includes the ratio of moles of silicon contained in the organic compound relative to moles of carbon in the fuel ranging from 0.01 to 0.05 mol %, and the second condition includes the ratio of moles of silicon contained in the organic compound relative to moles of carbon in the fuel ranging from 0.05 to 1 mol %.