Method for testing heat insulation performance of thermal protection ceramic coating

The invention relates to a method for testing the heat insulation performance of a thermal protection ceramic coating. The surface of the thermal protection ceramic coating is rapidly heated and subjected to heat preservation, cooling is conducted at the same time, and the surface temperature of the ceramic coating and the back temperature of a metal matrix are recorded in real time; and the surface of a coating only provided with an alloy bonding layer is rapidly pre-heated and subjected to heat preservation, cooling is conducted on the back surface of the metal matrix, the coating surface temperature of the alloy bonding layer and the back surface temperature of the metal matrix are recorded in real time, and the oxygen flow is adjusted to ensure that the back surface temperatures of the two metal matrixes are consistent, at the moment, the actual coating surface temperature of the alloy bonding layer is the recorded temperature, and the difference between the ceramic coating surface temperature under the s