在1500℃下以金属Sn作熔剂,石墨作还原剂,采用相同组成熔渣与不同组成的锡合金在CO-Ar混合气体条件下,使反应达到平衡,测定了锡基稀溶液中Ca,Ti和Mg的自身和相互作用系数。指出在用此法测定熔渣中组元的活度时,忽略Sn中元素的自身作用系数,将带来较大误差。
The interaction parameters of Ca, Ti and Mg in the Sn-based dilutesolution have been determined at 1500℃. Experimental measurements were taken byequilibrating the systems composed of the same component slags and various compo-nents Sn-based alloys with metallic Sn as flux and graphite as reducing agent un-der Ar atmosphere mixed with different portions of CO. It was found that a con-siderable error would be ommitted owing to neglect of the parameters ε_(Ca)~(Ca), ε_(Mg)~(Mg) andε_(Tl)~(Tl) in the Sn melts when the activities of the components CaO, MgO and TiO_2 inthe slags were estimated by this method.
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