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The selection and performance of thermal sprayed abradable seal coatings for gas turbine engines

Conference ·
OSTI ID:6881042

Criteria used in designing thermal sprayed abradable seal coatings for gas turbine engines are discussed. These include the conditions of being readily abradable and yet being resistable to particle impact erosion from engine-ingested abrasive dust at high gas velocities. Other important criteria include temperature stability, inertness, and consistency. The paper describes the classes of abradable seal materials; the characterization of thermal sprayed abradables; the current coating materials' temperature, erosion, and abradability performance; and current research in thermal sprayed abradable coating materials. 5 refs.

OSTI ID:
6881042
Report Number(s):
CONF-8903145--
Country of Publication:
United States
Language:
English