HIP SINTERING AND SATURATION MAGNETIZATION OF Fe4N

Abstract

Abstract-Fe"N powder has been sintered at below the decomposition temperature applying a hipping pressure. and the influence of oxygen content on saturation magnetization of hipped Fe"N has been studied. The bipping temperature was restricted below 500'C. because Fe"N was decomposed at 550'C. The maximum relative density of 97% was obtained for the Fe"N bipped at 500'C under 200MPa. The Fe"N hipped at 450'C under 200MPa revealed the maximum saturation magnetization of 182ernu/g with a high relative density of 95%. It was confirmed that the presence of oxygen decreased saturation magnetization of Fe"N. The Vickers hardness was measured as Hv5.5 X 10 2 • and the corrosion resistance was higher than that of steel