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首页> 外文期刊>Metallurgical and Materials Transactions >Activities in CaO-SiO_2-Al_2O_3 Slags and Deoxidation Equilibria of Si and Al
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Activities in CaO-SiO_2-Al_2O_3 Slags and Deoxidation Equilibria of Si and Al

机译：CaO-SiO_2-Al_2O_3炉渣中的活性及Si和Al的脱氧平衡

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摘要

By using the data in previous and present slag-metal equilibrium experiments, the activities of SiO_2 along the liquidus lines in CaO-SiO_2-Al_2O_3 slags were determined at 1823 and 1873 K from the reaction Si + 2O = SiO_2 (s), in which the oxygen activities were estimated from the measured oxygen contents or from the combination of nitrogen distribution ratios (L_N) and nitride capacities (C_N). The activities of Al_2O_3 were also determined from the reaction 2Al + 30 = Al_2O_3 (s), in which the oxygen activities were estimated from the values for L_N and C_N, or from the reaction 3SiO_2 (s) + 4Al = 2Al_2O_3 (s) + 3Si, in which the activities of SiO_2 and the contents of Al and Si along with the respective interaction coefficients were used. The activities of Al_2O_3 and CaO in the entire liquid region were estimated from the Rein and Chipman's activities of SiO_2 by using the method of Schuhmann. On the basis of these activities, the deoxidation equilibria of Si and Al in steels were discussed.
机译：利用之前和现在的炉渣-金属平衡实验中的数据，通过反应Si + 2O = SiO_2（s）确定了CaO-SiO_2-Al_2O_3炉渣中SiO_2沿液相线的活动在1823和1873K。根据测得的氧含量或氮分布比（L_N）和氮化物容量（C_N）的组合估算氧活度。还根据反应2Al + 30 = Al_2O_3（s）确定Al_2O_3的活性，其中根据L_N和C_N的值或反应3SiO_2（s）+ 4Al = 2Al_2O_3（s）+估算氧活度3Si，其中使用了SiO_2的活度以及Al和Si的含量以及各自的相互作用系数。采用舒曼法，根据SiO_2的Rein和Chipman活性，估算了整个液态区域的Al_2O_3和CaO的活性。基于这些活性，讨论了钢中Si和Al的脱氧平衡。

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