抄録
The present study describes erosive wear of hardened chromium alloy steel against fine sphere particle. A sand blast apparatus consisted from double walled nozzle and rubber balls enclosed tank used for the experiment. Alumina beads of 50 um in diameter were impacted to the mirror finished specimen surface at various treatment times. Results showed that the eroded surface has hardened by the particle impacts at initial stage of the experiment. The increase of the erosive wear loss corresponded to that of the hardness. Consequently, it was estimated that the erosive wear of the alloy steel against the fine particle impact occurred in the work hardened region.
