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首页> 外文期刊>Materials transactions >Development of a New Method for Manufacturing Iron Foam Using Gases Generated by Reduction of Iron Oxide
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Development of a New Method for Manufacturing Iron Foam Using Gases Generated by Reduction of Iron Oxide

机译：利用氧化铁还原气体生产铁泡沫的新方法的开发

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A new method for manufacturing iron foam using CO and CO{sub}2 as foaming gases was studied. This method consists of three stages: (1) mixing powders of pure iron, graphite, and hematite; (2) preparing the precursor by cold pressing the mixed powders; and (3) foaming by heating the precursor at temperatures between the liquidus and solidus in the Fe-C binary system. Molten iron containing carbon is foamed by gases generated by a reduction reaction. Optimizations of both the composition of the precursor and the heating conditions are required to produce the iron foam with high porosity. It was found that the content and powder size of hematite in the precursor significantly affect the porosity and pore diameter of the iron foam. Iron foam with a porosity of 55% and average pore diameter of around 500 μm is obtained by heating the precursor of Fe-3.1 mass%C-1.0mass%Fe{sub}2O{sub}3 at 1543K.
机译：研究了一种利用CO和CO {sub} 2作为发泡气体制备泡沫铁的新方法。该方法包括三个阶段：（1）混合纯铁，石墨和赤铁矿的粉末; （2）通过冷压混合粉末制备前驱体; （3）通过在Fe-C二元体系中在液相线和固相线之间的温度下加热前体来发泡。含碳的铁水被还原反应产生的气体发泡。为了生产高孔隙率的泡沫铁，需要对前体的组成和加热条件进行优化。发现前体中赤铁矿的含量和粉末尺寸显着影响泡沫铁的孔隙率和孔径。通过在1543K下加热Fe-3.1质量％C-1.0质量％Fe {sub} 2O {sub} 3的前体，获得孔隙率为55％且平均孔径为约500μm的铁泡沫。

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