真空/加压感应炉以1.0 MPa高纯氮(体积分数≥99.999%)为氮源熔炼了Fe-Cr-V高氮钢,分析了氮的溶解度与氮分压和铬、钒含量的关系.氮在Fe-Cr-V合金中的溶解服从Sievert定律,氮的溶解度随铬和钒含量的增加而增加.用Al和Fe-Al(铝的质量分数为50%)合金加顶渣对Fe-Cr-V合金进行了脱氧实验,Fe-Al合金加CaF2-CaO-Al2O3(各成分比例为1∶4∶1)顶渣40 min可使Fe-20Cr-1.93V合金的氧的质量分数降低到0.007 2%.
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