Abstract
Reliable and effective use of coatings for increasing the supporting capacity of gas-turbine engine blades is hindered by an insufficient study of the effect of a number of factors such as the action of transcient thermal loads. In the present work, the effect of such factors is considered with a view to studying the supporting capacity of alloy ZhS6U with protective coatings in a gas stream under thermocyclic loading. The types of coating tested were represented by two groups differing in the method of protective layer application, the slip method and electron beam precipitation in a vacuum. Analysis of test results showed that for all of the types of coating there was accelerated crack growth in the initial stage of development.
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