Abstract
Laser heating method is proposed for the evaluation of high-temperature stability of thermal protective coatings of zirconium dioxide. Structural-phase state of plasma thermal protective coating of zirconium dioxide has been investigated after laser pulse altering with a different energy. Processes of phase transformation, melting and recrystallization are registered. It has been found that the degradation of the coating affects the surface layers with a thickness of several layers. By changing the parameters of laser radiation it is possible to carry out rapid diagnostics and comparative tests of heat resistance of ceramic protective coatings obtained by different methods from different initial materials.
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