| Sintering behavior of iron compacts with 2.5 wt.% of(Sn, Cu) additives has been investigated, and the results were compared with those of Fe compact and Fe-4.0 wt.% Cu compact. In this work, the effects of sintering temperature, composition of Sn-Cu additive and admixing method of the additives on dimensional change, formation of interconnecting porosity and radial crushing strength were experiementally studied. The Fe-2.5 wt.% (Sn, Cu) compacts sintered at 890℃ showed better properties for porous bearing application than any of the Fe compact and the Fe-4.5 wt.% Cu compact sintered at 1150℃. Specimen admixed with (Sn, Cu) additive whose Sn/Cu ratio of 35/65 showed highest radial crushing strength, and admixing methods did not show any noticable differences in the strength. Sintering process during heating was studied by analyzing room temperature microstructures with EPMA and X-ray diffraction and the role of the additives in this system was discussed in detail. |
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