| 摘要 |
PURPOSE:To obtain iron-base composite powder contg. Sn and having superior characteristics as a starting material for sintering by mixing iron powder with powder of Sn or a compound forming Sn and powder contg. a required element and by heating the mixture in a reducing or nonoxidizing atmosphere. CONSTITUTION:Iron-base powder contg. practically no Sn is mixed with 0.1- 20wt% (expressed in terms of Sn) powder of Sn or a compound forming Sn by thermal decomposition such as SnO and powder of one or more kinds of components selected among C, Co, Cr, Cu, Mn, Mo, Ni, P, Si, etc. and compounds each contg. such elements by an amount <50 times the amount of Sn. The powdery mixture is heated at 250-900 deg.C in a reducing or nonoxidizing atmosphere. By this method, composite powder contg. well compounded alloying elements and having high compressibility can be manufactured at a low cost. |
