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Effects of the Gas Environment on the Destruction Process of Blade Roots of Land-Based Gas Turbines
Journal of Machinery Manufacture and Reliability  (IF),  Pub Date : 2021-07-13, DOI: 10.3103/s1052618821030122
S. A. Naprienko, E. V. Filonova, E. B. Chabina, D. S. Gorlov

Abstract

During operation, parts of the high temperature section of land-based gas turbine units are subjected to an aggressive gas environment, which affects adversely the durability of components and assemblies. When analyzing operational fractures of the ZhS32-VI alloy blade roots after operation as parts of land-based gas turbines, we found that cracks developed in the places of active sulfide-oxide corrosion. In this paper, it is shown that the presence of silver accelerates the corrosion of turbine blade roots. It is proposed to use TiN-based technological barrier layers to protect the blade root surfaces from sulfide-oxide corrosion.