軟質表層を有する摩擦面の始動摩擦特性 : 静止荷重時間,相手面特性および関節液成分の影響

概要

論文の詳細を見る
The application of a low elastic modulus layer lining on the bearing surface of the joint prosthesis has been investigated to promote continuous film of lubricant between articulating surfaces by soft-elastohydrodynamic effect. However, these elastomeric bearing surfaces generally have poor tribological properties when a fluid film is not present. The purpose of this research is to elucidate and characterize the starting (from the start-up to the steady state) friction of conductive silicone rubber against either stainless steel or glass. The smooth surface of a stainless steel plate gave a start-up friction which was significantly higher than that of glass plate. This seems to be reflected in the hydrophobic character of the plate surface. Roughened surface of a stainless steel made a start-up friction smaller, whereas, that of a glass raised the friction. Roughness of the surface seems to have two typical effects on the starting friction. First, the roughened surface reduces the reab contact arel, so that the adhesive action becomes less effective. Secondly, the growing interference between sliding surfaces raises the traction coefficient under the mixed lubrication condition. Adsorbed protein onto the sliding surface might reduce the adhesive action. However, in some cases, the adsorbed layer raised friction.
一般社団法人日本機械学会の論文
1999-04-25