PARTIALLY HARDENED SINTERED BODY AND METHOD OF MANUFACTURING SAME

摘要

A partially hardened sintered body such as a rocker arm comprises powder forming a main body and a capsule-like powder composite (1) disposed adjacent to the powder and composed of core particles (2) made of a material harder than the powder and covering particles (3) covering the core particles and made of the same material as the powder. The powder and the capsule-like powder composite (1) are solidified into the partially hardened sintered body.