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Fretting wear of nickel-aluminum bronze (NAB) alloys and 15wt% Ti3SiC2/NAB composites against the 42CrMo4 steel was studied through flat-on-flat testing at oil-lubrication conditions with varying free-water contents (0, 26.8, 52.3 and 76.7wt%). Tribological test results revealed that the addition of Ti3SiC2 substantially reduced the fretting wear and the friction coefficient of NAB alloys at all testing...
Torsional fretting exists in many engineering applications and the contact configurations have great effects on the fretting wear behavior. Influence of angular displacement amplitudes and normal loads on torsional fretting were investigated under flat on flat contact. Friction torque versus angular displacement amplitudes and friction torque versus number of cycle curves were used to analyze the...
Loose powder is used to lubricate the tribopair with the replenishing mechanism. This work analyzes the contact and the damage behavior of the powder layer during powder lubrication. The typical life cycle of a powder layer includes the full powder layer, partial detachment, serious detachment, and complete destruction, which can be concluded from the powder layer images. The carbon and copper content...
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