The Solubility of CaO·Cr2O3 in the CaO-CaF2 System Associated with Dephosphorization of Fe-Cr-C Melts
The Solubility of CaO·Cr2O3 in the CaO-CaF2 System Associated with Dephosphorization of Fe-Cr-C Melts
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DOI：
10.2355/tetsutohagane1955.80.1_13
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发表时间：
1994
影响因子：
0.3
通讯作者：
Y. Kanzaki;F. Tsukihashi;N. Sano
中科院分区：
文献类型：
--
作者：
Y. Kanzaki;F. Tsukihashi;N. Sano
简介：在氧分压为2.28 × 10 ~（-3）Pa的条件下，用CaO·Cr_2 O_3平衡熔剂，测定了1773 K时氧化铬在CaO-CaF_2系中的溶解度。随着CaO含量从15.6质量%增加到20.6质量%，Cr2 O3在熔剂中的溶解度从0.80质量%变化到1.28质量%。在用含CaO的熔剂对Fe-Cr-C熔体进行脱磷的情况下，系统的主要氧分压由Ca 0和Cr 2 O3之间形成CaO·Cr 2 O3的反应控制。磷在Fe-Cr -Csatd.在1573 K下测定了合金和CaO-SiO2-CaF 2系熔剂中CaO·ECr 2 O3、CaO和3CaO·ESiO 2的饱和度。磷和铬的分配比随着金属的铬含量从1质量%增加到13质量%而降低。
Synopsis : The solubility of chromium oxide in the CaO-CaF2 system has been determined at 1773K by equilibrating the flux with a CaO.Cr2O3 pellet at the oxygen partial pressure of 2.28 x 10' Pa. The solubility of Cr2O3 varies from 0.80 to 1.28 mass% in the flux with increasing the CaO content from 15.6 to 20.6 mass%. In case of the dephosphorization of Fe-Cr-C melts with CaO bearing fluxes, the prevailing oxygen partial pressure of the system is controlled by the reaction between Ca0 and Cr203 forming CaO.Cr2O3. The phosphorus distribution ratio between Fe-Cr -Csatd. alloys and CaO-SiO2-CaF2 fluxes saturated with CaO•ECr2O3, CaO and 3CaO•ESiO2 has been measured at 1573K. The phosphorus and chromium distribution ratios decrease with increasing chromium content of the metal from 1 to 13 mass%.