A PROCESS FOR MAKING OPEN CELL ALUMINUM FOAM USING MELT ROUTE

摘要

(i) melting of alloy, (ii) degassing and cleaning of the molten alloy, (iii) preheating the thickening agent, (iv) addition of preheated thickening agent through mechanical stirring using specially designed stirrer systems at a speed of 600 to 700 rpm (v) Transfer the composite melt into a metallic die, (vi) Addition of foaming agent into the metallic die and stir at a speed of 600-900 rpm, (vii) The formed material is cooled once the foaming is over. The process developed results in open pore Al foam with uniform distribution of pores. The pore size and density of the material is controlled by the concentration of thickening agent and temperature of foaming. The open pore Al foam thus developed has thermal management applications and can be used as a evaporate. A climatizer has been made out of this material and can effectively reduce the chamber temperature by 10 to 12°C as compared to the ambient temperature.