ほう化処理および浸炭を施した鉄系焼結体のすべり摩耗特性

抄録

The wear-resistance of Fe-1.5% Cu-0.6% C and Fe-2.0% Cu sintered ferrous products surface treated with bonding and carburizing was investigated. Low carbon (0.07% C) steel and cemented carbide alloy were used as rotory test pieces in the wear test. The surface of the bonded products was found to have higher wear-resistance than that of carburized products under the following sliding wear conditions: Fe-1.5% Cu-0.6% C or Fe-2.0% Cu-low carbon steel, lubricated; and Fe-1.5% Cu-0.6% C-low carbon steel and Fe-2.0% Cu-cemented carbide alloy, unlubricated. Oxidation or adhesion of frictional surface with rotory test pieces was less for the bonded products than for those that had been carburized. In the wear mechanism at slow sliding velocities under unlubricated conditions for bonded Fe-1.5% Cu-0.6% C-low carbon steel, oxidative wear was observed, and with increasing sliding velocity, there was a change from oxidative wear to mechanical wear. In the wear mechanism at sliding velocities between 0.1 and 4.4m/s under unlubricated conditions for bonded Fe-1.5% Cu-0.6% C or Fe-2.0% Cu-cemented carbide alloy, oxidative wear was mainly observed.