Breaking through the conventional P / M processing,a new process for preparing high density Fe- Cu- C alloys was designed. Through sulfuring treatments on the surface of iron powder,Fe reacts with moderate S to generate Fe S,which is uniformly coated on the surface of iron powder particles and formed a thin-layered Fe S lubrication film. The Fe S lubrication film is useful for reducing the friction of compaction. The phase,element distribution and microstructure were characterized by X-ray diffraction,scann...