Tadlya K. Methods development for life time and operation temperatures estimation of protective coatings for gas turbine blades

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0404U003718

Applicant for

Specialization

  • 05.05.16 - Турбомашини та турбоустановки

06-10-2004

Specialized Academic Board

К 26.224.02

Essay

In work approaches are developed for estimation of life time, residual life time and average operation temperature of protective metal coatings for gas turbine blades. Physi-cal and mathematical models are developed in work for describing mass transfer processes in system "coating - base alloy of gas turbine blades". For use offered models and approaches in the practical purposes the software COLTAN is developed. Identification model parameters and the calculating analysis of NiCoCrAlY coatings on substrate IN 738 LC is executed. Calculating results of Al distribution in coatings and life time estimation for NiCrAlSiTaY coatings on CM247LC are received. The received calculating results have passed check with long-term experiments and have shown the good agreement with experimental data. Also in work average operation temperatures are calculated for NiCoCrAlY coatings on a contour of cross-section of two turbine rotor blades.

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