ПРИМЕНЕНИЕ СИЛЬНОТОЧНЫХ ИМПУЛЬСНЫХ ЭЛЕКТРОННЫХ ПУЧКОВ ДЛЯ МОДИФИЦИРОВАНИЯ ПОВЕРХНОСТИ ЛОПАТОК ГАЗОТУРБИННЫХ ДВИГАТЕЛЕЙ. ОБЗОР

The experimental data on the influence of irradiation by heavy-current pulsed beams (HPEBs) on physicochemical state of surface layers and  operational properties of gas-turbine engines made of heat-resistant materials are analyzed. It is shown that  the HPEB of the microsecond duration is a highly efficient tool for modifying the surface of blades of the turbine and  compressor, which provides the performance of high-speed thermal treatment (quenching), material recrystallization in surface layers of 20–30 μm, and  surface cleaning and smoothing. These processes cause an increase in fatigue strength of blades (by 10–30 %), heat resistance (by a factor of 2–3), and  resistance against salt corrosion (up to sixfold).