Sintering Temperaure Effect on Tantalum Porous Materials Performance

Abstract:

With the secondary sphericity particles mading of 1~2μm size Ta powder as raw material,Tantalum porous material was prepared by compression molding, vacuum sintering. The effect of sintering temperature on Ta porous material performance was researched. The results show that the Ta green body occur shrinkage because of sintering-neck come into being and growing up during the sinter. The porosity and penetrate coefficient of decrease and the shear strength improved with increase the sintering temperature. Ta porous material was provided with favorable three-dimensional meshwork in connection with big and small pore while maximum pore size is the minimum for 1600℃sintering temperature. The pore size less than 3.1μm is proportion of 98%.