碳酸镁发泡剂制备泡沫铝的研究  

Preparation of Aluminum Foam by MgCO_3 Foaming Agent

作　　者：周全[1] 吴蒙[1] 

机构地区：[1]南昌航空大学材料科学与工程学院,江西南昌330063

出　　处：《铸造技术》2009年第2期257-259,共3页Foundry Technology

基　　金：江西省教育厅资助项目(GJJ08208)

摘　　要：选用ZL102合金为主体原料,钙为增粘剂,碳酸镁为发泡剂,对用熔体直接发泡法制备泡沫铝进行了研究。结果表明,采用碳酸镁作为发泡剂,钙作为增粘剂,可以制备出低密度、高孔隙率的泡沫铝;随着碳酸镁或钙加入量的增加,泡沫铝的密度逐渐减小;但当碳酸镁或钙加入量超过1%时,泡沫铝的密度有所增加;泡沫铝平均孔隙率的变化规律与密度的变化规律相反。The preparation of aluminum form was studied by direct foaming process, in which ZL102 alloy, calcium and MgCO3 were selected as the main raw material, viscocity-increasing agent and foaming agent, respectively. The results show that aluminum form with low density and high porosity can be obtained with foaming agent of MgCO3 and viscocity-increasing agent of Ca. With the increase of the MgCO3 or Ca addition, the density of aluminum form decreases. However, when the MgCO3 or Ca addition is above 1 wt%, the density of aluminum foam increases slightly. On the contrary, variation of porosity of aluminum form has a reverse rule.

关 键 词：泡沫铝 熔体发泡 碳酸镁 

分 类 号：TB383.4[一般工业技术—材料科学与工程]