Abstract
β-FeSi2 phase of high density (about 90%TD) was produced by two-steps spark plasma sintering using commercial FeSi2 powder which consists of a-FeSi2 and ε-FeSi. In order to advance the transformation to β-FeSi2 enough, it was clarified that it is necessary to lengthen comparatively holding time (30 minutes) in the 2nd step sintering performed at temperatures ranging from 700 to 850°C. On the other hand, it was found that the holding time in the 1st step sintering performed at 1000°C hardly showed influence to the transformation to β-FeSi2 phase.
