▎ 摘　　要

NOVELTY - Powder metallurgy gearbox material comprises 0.1-1.5 wt.% polyvinyl isobutyl ether, 0.1-1.5 wt.% zinc stearate, 1-3 wt.% copper powder, 0.5-5 wt.% oligomeric graphene, and rest of iron powder. USE - Powder metallurgy gearbox material (claimed). ADVANTAGE - The powder metallurgy material improves wear resistance and strength of the gearbox.