Iron-graphite composite powders and sintered articles produced therefrom

摘要

An iron-graphite composite powder has a microstructure comprising carbon clusters in a ferrous matrix. Independent claims are also included for: (A) a process for preparing the iron-graphite composite (1) atomizing a liquid iron to form an atomized iron powder, (2) heating the atomized iron powder to greater than 900[deg]C, and (3) cooling the powder to greater than 600[deg]C; and (B) a sintered article prepared by sintering the iron-graphite composite powder.