Abstract:Nb2O5-xtargets were prepared by vacuum sintering process.The effects of sintering temperature on the phase structure,weight loss,density and electrical resistivity of the target were investigated.The excellent comprehensive properties Nb2O5-xtargets can be prepared by control the sintering temperature.The results show that the non-stoichiometric is Nb2O4.59when the vacuum sintering temperature is 1200℃,and the properties is the best.At this time,the electrical resistivity is 2.32 mΩ· cm,the target density is 4.85 g/cm3,and the weight loss is 2.47,.