Abstract
The efficiency of multifunctional composite coatings consisting of an intermediate adhesive layer and a surface wear-resistant layer undergoing thermoelastic martensitic transformations (TMT) is discussed. Using the example of a propeller blade, it is shown that materials with TMT in the composition of the surface composition provide an effective response to external influences (an increase in the endurance limit in seawater by 30%, wear resistance by 3.0—3.2 times, cavitation resistance by 15—20 times as compared to the base) and adaptation to loading conditions, that contributes to an increase in the service life. Evaluation of the stress-strain state of a propeller with the composite coating Ni—TiNiZr—TiNiCo showed a decrease in stresses in the most dangerous zone and confirmed the expediency of using materials with TMF to improve reliability.
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