【摘要】 计算了用 Ｃａ还原 Ｄｙ２Ｏ３生成纯金属 Ｄｙ和 Ｄｙ与 Ｆｅ反应生成 ＤｙＦｅ２合金时，标准自由能和自由能的变化以及反应平衡时的钙分压，在 １０７３、 １１２３、 １２２３以及 １３２３Ｋ的温度下制得了ＤｙＦｅ２合金，用 ＸＲＤ和 ＥＤＸ鉴定了反应产物的物相更多还原

【Abstract】 The standard free energy, the free energy change, the equilibrium vapor pressure of Ca in the reduction reaction (3Ca + Dy2O3 = 2Dy + 3CaO) and the formation of DyFe2 by the reaction of Dy and Fe(Dy + 2Fe = DyFe2) were calculated. The DyFe2 powders were experimentally prepared at 1073. 1123, 1223 and 1323 K. XRD and EDX analyses confirmed that DyFe2 formed.更多还原