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HS25 cobalt-based superalloy was investigated between 100 and 600°C under fretting wear (small amplitude reciprocating displacements) in a cross-cylinder contact. Tribological behavior was compared to pure cobalt, chromium and nickel tested under the same conditions and analyzed in terms of friction, wear, interface morphology and chemical composition by SEM-EDX and Raman spectroscopy. On HS25, the...
The third body formed in a contact between HS25 cobalt-based superalloy versus ceramic under fretting wear (small reciprocating displacements) was investigated. This tribomaterial, commonly called “glaze layer”, was created from nanosized, compacted and sintered wear debris and adheres on both rubbed parts. The glaze layer was investigated both from tribological and rheological points of view. In...
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