Sintering of 17-4PH stainless steel feedstock for metal injection molding

摘要

The sintering behavior of 17-4PH stainless steel feedstock for metal injection molding was investigated in the temperature range of 650\u20131050 \ub0C. Effects of sintering conditions, such as sintering temperature and sintering atmosphere, were examined. Results showed that when sintered in the hydrogen/nitrogen atmosphere, the 17-4PH feedstock was oxidized over the temperature range of investigation. The degree of oxidization increased with the sintering temperature. The main oxidization product was Cr2O3 as revealed by X-ray diffraction and composition analysis. The oxidation can be avoided by sintering in vacuum or argon atmosphere.