HIGH-TEMPERATURE COMPOSITE MATERIAL FOR SEALING COATING

摘要

FIELD: powder metallurgy and sealing materials. ^ SUBSTANCE: invention provides high-temperature composite material, which can be used for applying sealing coatings on the parts of gas-turbine engines. Material contains 10-15% zirconium dioxide stabilized with 7% yttrium oxide, fraction 100-250 mum; 15-25% boron nitride fraction 450-630 mum; 9-12% nichrome fiber 3-5 mm in length; and stabilized zirconium dioxide of activated dusty fraction - the rest. ^ EFFECT: increased stability under thermocyclation conditions and reduced wear of counter-body. ^ 1 tbl