This article discusses the problem of increasing the physical and mechanical properties of thermal barrier plasma sprayed coatings from the powder ZrO2-7% Y2O3, which are widely used to protect against corrosion and to reduce gas temperature of gas turbine engine blades surface. Analyzed the current methods provide enhanced properties of these coatings and revealed the necessity of the use predrecrystallization heat treatment to solve this problem. Yttria-stabilized zirconia thermal barrier coatings were produced by atmospheric plasma spraying. These coatings were subjected to heat treatment in air at 1200 °C and 1300 °C from 5, 10, 15, 20, 25 and 30 min. The structural characteristics of powders and coatings were evaluated using optical microscope.It is found that the optimum heat treatment conditions of thermal barrier plasma sprayed coatings from the powder ZrO2-7% Y2O that enhances hardness by 13% and reduced the thermal conductivity of the ceramic layer is 15% compared with the state after deposition by changes substructure is heated to a temperature of 1300 ° C, aged for 15 minutes and cooling in air. The phase analyses of coatings were conducted by X-ray method. The phase analysis of the ceramic layer after heat treatment, showed the following phase content,%: monoclinic - 5; tetragonal - 25; cubic - 70. It is shown that the rapid cooling prevents phase transformation: with increasing cooling rate during heat treatment with 0.02 ° C/sec to 34 ° C/sec tetragonal phase content increased to 40% and the content of monoclinic - not fixed.