| abstract |
In order to improve machinability of a sintered compact, a phosphate compound of annalkali earth metal (calcium phosphate compound or the like) is mixed with an iron-basednpowder, or an alkali earth metal fluoride (calcium fluoride, or the like) is further mixed withnthe iron-based powder. Alternatively, the alkali earth metal fluoride, together with a graphitenpowder, is preferably fixed to recesses of the iron-based powder. |