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发明授权
CN108384975B 一种多孔铝合金的制备方法 有权

一种多孔铝合金的制备方法
摘要：
本发明公开一种多孔铝合金的制备方法，属于多孔金属技术领域。首先，将预热的NaCl颗粒与铝合金熔体进行液态搅拌均混，冷却凝固后得到盐/铝合金复合坯；其次，将盐/铝合金复合坯加热到铝合金的半固态温度区，通过半固态挤压及剪切获得一定外观形状和长度的盐/铝合金复合体；最后，用水溶除盐/铝合金复合体中的NaCl颗粒，得到孔径范围5~200μm、孔隙率40%~70%的微米孔径多孔铝合金。本发明所制得的微米孔径多孔铝合金，孔结构及外观形状可控，制备工艺简单，成本低，可实现工业化生产。
摘要（英）：

The invention discloses a preparation method of a porous aluminum alloy, and belongs to the technical field of porous metals. The preparation method comprises the steps that firstly, preheated NaCl particles and aluminum alloy melt are subjected to liquid stirring and uniform mixing, and acquiring a salt/aluminum alloy composite blank after cooling solidification; then, heating the salt/aluminum alloy composite blank to be at the temperature in a semisolid temperature zone of the aluminum alloy, and acquiring a salt/aluminum alloy composite with a certain appearance shape and length through semisolid extrusion and shearing; and finally, removing the NaCl particles in the salt/aluminum alloy composite through a water solution, and acquiring the micron-aperture porous aluminum alloy of whichthe aperture range is 5 m to 200 m and the porosity is 40% to 70%. According to the obtained micron-aperture porous aluminum alloy, the pore structure and appearance shape are controllable, apreparation technology is simple, cost is low, and industrial production can be achieved.

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