落葉起因のレール面上黒色皮膜に対するクエン酸による対策法の検討

抄録

In mountainous areas in autumn, wheels frequently slip or slide due to black film on rail surface caused by fallen leaves. In this study, the effect of citric acid solution, which is expected to remove the black film, was investigated by measuring the tangential force coefficient and observing the appearance. The results suggested that the removal effect of citric acid solution was obvious and the higher the concentration, the higher the effect. On the other hand, it is expected that the rails need to be washed with water after the removal of the black film using citric acid solution.