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The human body joint motion is very complicated, which mainly includes sliding, swing, rotation. Therefore, cartilage covering the joint surface bears the repeated friction which is caused by the different movements during the whole life. So sliding, swing and torsion friction behavior of hydrogels need to be researched as synthetic articular cartilage. In this paper, PVA/HA composite hydrogel is...
Mine hoists for medium depth and deep mines in China rely on friction hoists. Proper function of the equipment involves controlled frictional contact between a rope and a lining. While there has been a lot of empirical testing of friction hoist materials, studies of the effects of their microstructure and basic properties on friction and wear have largely been neglected. Three commercial grade linings...
A new high-entropy alloy system, AlCoCrFeMoNi, was designed based on the AlCoCrCuFeNi, by replacing Cu with Mo to improve strength and thermal stability. The effect of iron content on hardness and wear behavior of AlCoCrFe x Mo 0.5 Ni alloys is related to the microstructural change. As the iron content is increased, the microstructure changes from “dendritic” for Fe0.6 and Fe1.0 alloys...
The Al x CoCrCuFeNi alloys with different aluminum contents prepared by arc melting were investigated on their adhesive wear behaviors. With increasing aluminum content, both the volume fraction of BCC phase and the hardness value increase, and thus the wear coefficient decreases. Moreover, the wear mechanism changes from delamination wear to oxidative wear. For low aluminum content, x=0.5,...
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