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Cobalt–chromium–molybdenum (CoCrMo) alloys are widely applied as wear-resistant material. This article aims to illustrate the influence of phase constitution and precipitate morphology on the wear behavior of hot-pressed high carbon alloys. Wear behavior of two kinds of CoCrMo alloys, HP (hot-pressed) and HPA (hot-pressed+annealing) with various microstructure, hardness and surface topography were...
This study aims to elucidate the synergy effects of the σ phase and carbide on the wear behavior of low-carbon (LC) and high-carbon (HC) cobalt–chromium–molybdenum (CoCrMo) alloys, by using pin-on-disc tests under Hanks' lubricated conditions. Fractured or torn-off σ-phase precipitates were observed to be the main reason for abrasion for both LC and HC alloys. Carbides were torn off at the initial...
Tribological properties of carbon/carbon composites with various pyrolytic carbon microstructures have been investigated. Three kinds of samples characterized by rough laminar (IT-a), smooth laminar (IT-b) and duplex microstructure containing both rough laminar and smooth laminar (TG-c) structures were used in the current study. The minimum coefficient of friction was observed for the IT-b sample,...
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