钛粉粒度对轧制烧结多孔钛板力学性能的影响

Effect of powder sizes on the mechanical properties of porous titanium sheets prepared by rolling and sintering process

对不同粒度钛粉的流动性、松装密度和振实密度进行分析,经轧制和烧结制备出满足湿法冶金需求的多孔钛板,研究了钛粉粒度对轧制烧结多孔钛板力学性能的影响。结果表明:轧制烧结多孔钛板的最大孔径和孔隙度随钛粉粒度的减小而减小,钛板密度、剪切强度、抗弯强度、抗拉强度及伸长率均随钛粉粒度的减小有所增加;当钛粉粒度范围为89~104μm时,粉末轧制烧结多孔钛板的综合力学性能较高。

The fluidity, loose packing density, and vibrating density of titanium powders with different powder sizes were studied and analyzed, and the porous titanium sheets were prepared by rolling and sintering using the corresponding titanium powders to meet the demand of hydrometallurgy. Effect of the powder sizes on the mechanical properties of the porous titanium sheets were detailed discussed. The results show that, the maximum pore size and porosity of titanium sheets decrease with the decrease of powder size, while the density shows an opposite trend, and the tensile strength, elongation, shear strength, and bending strength of the porous titanium sheets increase with the decrease of powder size. The porous sheets prepared by the titanium powder size ranging from 89 μm to 104 μm exhibit the better comprehensive mechanical properties.