DEVELOPMENT OF HARD POROUS CARBON MATERIALS RB CERAMICS AND EVALUATION OF THEIR TRIBOLOGICAL PROPERTIES

本研究的目的是分析新型多孔炭材料“RB陶瓷”的摩擦学性能。该材料是由脱脂米糠浸渍苯酚树脂，在真空炉中高温碳化而成。从1998年的研究得出，RB陶瓷的摩擦系数和比磨损率随碳化温度的升高而减小，在干燥、浸油和水中。从1999年的研究得出，用RB陶瓷可以制成直线滑动轴承，而且由于静摩擦和动摩擦差很小，所以噪音很小。2000年的研究表明，RB陶瓷的摩擦系数和比磨损率随碳化温度的升高而降低。结果表明，即使在高接触压力下，Rb陶瓷也不会产生噪音或严重磨损，因此Rb陶瓷可以作为新型离合器材料。

The aim of this research is to analyze tribological properties of new porous carbon materials "RB ceramics" which is made of defatted rice bran impregnated with phenol resin and carbonized in a vacuum furnace at high temperatures.From the research in 1998, it is obtained that friction coefficient and specific wear rate of RB ceramics decrease with carbonizing temperature, under dry condition, oil impregnated condition or in water.From the research in 1999, it is obtained that a linear slide bearing can be made by using RB ceramics, and it shows low noise because difference of static friction and kinetic friction is very small.From the research in 2000, it is obtained that RB ceramics shows no noise or no severe wear even in high contact pressure, so RB ceramics can be used as new clutch materials.