The MgB 2 superconductive material was synthesized by means of solid
sintering reaction under the flowing argon atmosphere and in the vacuum sealed
quartz glass tube respectively. The effects of the phase change in Mg-B synthetic
process and the ratio of powder on synthetic samples purity in solid sintering reaction
were investigated in this paper. Besides, the effects of sintering technology on synthetic
process of MgB 2 were also discussed.