High speed rub wear mechanism in IN-718 vs. NiCrAl–Bentonite

A matrix of rub tests with blade tip speeds and infeed rates as variables gave rub force and tip wear results. Here, the rubbed tip material (bare IN-718, Rc = 43) and the abradable coating NiCrAl–Bentonite (HR15Y = 52) were examined in the SEM and polished cross section to gain insight into the wea...

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Bibliographic Details
Published in:Surface & coatings technology 2007-12, Vol.202 (4), p.698-703
Main Authors: Taylor, T.A., Thompson, B.W., Aton, W.
Format: Article
Language:English
Subjects:
Abradables
Applied sciences
Clearance control
Contact of materials. Friction. Wear
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
High speed rub
Materials science
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Physics
Surface treatments
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Summary:A matrix of rub tests with blade tip speeds and infeed rates as variables gave rub force and tip wear results. Here, the rubbed tip material (bare IN-718, Rc = 43) and the abradable coating NiCrAl–Bentonite (HR15Y = 52) were examined in the SEM and polished cross section to gain insight into the wear mechanism involved.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2007.05.054