成型参数对Ti-35%Al多孔材料孔结构的影响

Effect of Molding Parameters on Pore Structure Ti-35%Al Porous Material

成型参数是影响Ti-35%Al多孔材料孔结构的主要因素之一.采用元素粉末反应合成工艺合成了Ti-35%Al多孔材料,在其他制备参数一定的条件下,系统研究了成型参数与Ti-35%Al多孔材料的孔隙度、孔径和透气度等孔结构参数之间的关系.结果表明:Ti-Al合金多孔材料中,压制压力对Ti-Al合金多孔材料的孔隙度的影响并不明显;Ti-Al合金多孔材料的最大孔径随压制压力的增大而逐渐减小,压制压力对Ti-Al合金多孔材料孔径的影响,实质上是通过压制过程对压坯粉末颗粒的塑性变形以及对压坯间隙孔的影响来实现的;Ti-Al合金多孔材料的透气度随压制压力的增加呈线性关系递减,对不同压制压力下Ti-Al合金多孔材料Hagen-Poiseuille方程进行了验证,Hagen-Poiseuille方程适用于不同压制压力制备条件下的Ti-Al多孔体.

Molding parameters is one of the main factors affecting the pore structure of Ti-35%Al porous material. In this paper, Ti-35% AI porous material was synthesized by reaction of synthesis of elemental powders, keeping other parameters unchanged this paper studies the relationship between the porosity, pore size and porosity and pore structure parameters of molding parameters and porous Ti-SS;Al material. The effect of pressing pressure on the porosity of Ti-Al porous material is not obvious with the pressing pressure increase. The maximum pore size of Ti-Al porous material decrease gradually with the increase of the pressure. The effect of pressing pressure on Ti-Al porous material is that pressing process affect the plastic deformation of compaction powder particles and mesopore porosity of Ti-Al porous material. Hagen- Poiseuille equation is verified on Ti-Al porous material under different pressing pressure, Hagen-Poiseuille equation is applicable to Ti-Al porous material manufactured by different pressing pressure.