FIELD: mechanical engineering; gas-turbine engines.
SUBSTANCE: proposed abradable sealing system of gas-turbine engine has sectional seal and turbine blade engaging with seal. End part of turbine blade has cubical abrasive particles of boron nitride for bringing into contact with sectional seal to create sealing. Sectional seal with base made of superalloy, binding coating of MCrAIY on surface of base, with surface roughness exceeding 300 Ra, in which M is chosen from group consisting of Co, Ni or Ni and Co and porous ceramic abradable sealing material on binding coating, porosity from 5 to 15 vol %.
EFFECT: increased erosion strength of sealing system.
11 cl
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