抄録
Rice Hull is one of the agricultural by-products, and is required to utilize as the industrial resources from a viewpoint of recycling. Previously, authors have proposed a manufacturing process of a carbon material made from the rice hull. The rice hull is impregnated with a phenol resin and is carbonized in a nitrogen gas atmosphere at 900°C. The carbon material is called rice-hull silica carbon (RHS carbon). The RHS carbon has the porous structure that is originated from the natural structure of the rice hull. In this study, the authors proposed an artificial procedure to control the porosity of the RHS. carbon. Then, the effect of the porosity on the mechanical and frictional properties was discussed. The friction coefficient is excellent in the porosity-controlled RHS carbon. It is expected to use the material for the application of the linear motion bearing and so on.
