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100th anniversary of the “Metal forming” dept. of Ural federal university
ArticleName Role of surface phenomena in deformation and fracture of gas turbine blades and stamping tools under intense mechanical and thermal loading
DOI 10.17580/chm.2023.09.07
ArticleAuthor B. N. Guzanov, N. B. Pugacheva, E. Yu. Slukin, S. M. Nikiforova

Russian State Vocational Pedagogical University, Ekaterinburg, Russia:

B. N. Guzanov, Dr. Eng., Prof., Head of the Dept. of Engineering and Vocational Training in Mechanical Engineering and Metallurgy, Institute of Engineering and Pedagogical Education, e-mail:

Institute of Engineering Science, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, Russia:
N. B. Pugacheva, Dr. Eng., Associate Prof., Chief Researcher, Laboratory of Micromechanics of Materials, e-mail:

Ural Federal University named after the first President of Russia B. N. Yeltsin, Ekaterinburg, Russia:
E. Yu. Slukin, Cand. Eng., Associate Prof., Institute of New Materials and Technologies, e-mail:
S. M. Nikiforova, Cand. Eng., Associate Prof., Institute of New Materials and Technologies, e-mail:


A study of the damageability of most parts and products of modern technology, operated under non-stationary thermal and mechanical loading, shows that their premature failure is mainly due to changes occurring in the near-surface thin layers of steels and alloys, where, first of all, plastic deformation processes proceed intensively, origin and accumulation of centers of destruction. The analysis performed shows that the magnitude of surface damage can be very large and largely depends on contact with the external environment, the degree of impact of which is determined by its aggressiveness, state of aggregation and force contact pressure. In such operating conditions, the task of creating reliable surface hardening systems is quite difficult and in most cases should be reduced to the development of a good protective coating for a particular alloy and a particular application. In order to maintain the calculated durability and reliability of the parts of the blade apparatus of gas turbine plants, the article proposes to use protective multilayer combined coatings applied to the contact surface using the thermal diffusion and plasma spraying methods. Under conditions of moderate temperatures and non-stationary mechanical loading, which is typical for hot-forming dies, in order to achieve high protective properties, thermal diffusion boride coatings are proposed, applied in coatings based on specially developed active pastes.

keywords Protective coating, surface layer, mechanical and thermal loading, deformation, destruction, corrosion resistance, wear resistance

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