炭化ケイ素，鋼，アルミニウムと摩擦したアルミニウムのエタノール中での摩擦摩耗特性

摘要

Aluminum disk were slid against silicon carbide (SiC) pin, SUS 440 C stainless steel pin and aluminum pin in ethanol to evaluate the effect of the material of the mating pin on the friction and wear behavior. The friction and wear behavior of the aluminum disk was hardly influenced by the mating pin material in ethanol. Steady state friction coefficient was about 0.3 for all pairs of pin and disk. The specific wear rate of the aluminum disks slid against SiC pin, SUS 440 C stainless steel pin and aluminum pin were approximately the same order (2.4×10~(-3)~3.7× 10~(-3) mm~3/Nm). All aluminum disks were worn mainly due to the plastic deformation such as cutting, ploughing and adhesion to the mating pin surface. The chemical compositions of the worn aluminum disk surfaces were mainly metallic aluminum. The thin films of the oxide of aluminum were partly formed on the worn aluminum disk surfaces. The oxide appears to be formed by the reaction of aluminum with ethanol and water. Metallic aluminum and the oxide of aluminum adhered to all pin surfaces slid against aluminum disk.%油圧機器などの産業用機械の使用に伴うCO_2排出量の削減に寄与するため，CO2を増加させない流体と軽量材料を用いた潤滑システムの探索を行っている．前報では，軽量金属であるアルミニウムの水中での摩擦摩耗特性に及ぼす相手材の材質の影響について調べた1）．