COLUMNAR ZIRCONIUM OXIDE ABRASIVE COATING FOR A GAS TURBINE ENGINE SEAL SYSTEM

摘要

A gas turbine engine seal system includes a rotating member having an abrasive tip disposed in rub relationship to a stationary, abradable seal surfac e. The abrasive tip comprises a zirconium oxide abrasive coat having a columnar structu re that is harder than the abradable seal surface such that the abrasive tip can cu t the abradable seal surface.