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采用Thermo-Calc软件分别计算硅在不同温度Zn-50%Al-x Fe-y Si(原子数分数)熔池液相中的溶解度及不同温度Zn-30%Al-2%Fe-x Si(质量分数)熔池中开始形成τ5渣相和Fe Al3渣相消失时该熔池中硅含量,采用平衡合金法测定Zn-50%Al-x Fe-y Si合金液相中硅的溶解度和不同硅含量的Zn-30%Al-2%Fe-x Si合金的相平衡关系.当温度分别为540、560、580、600和620℃时,硅在Zn-50%Al-x Fe-y Si体系液相中的溶解度(原子数分数)计算值分别为0.82%、0.95%、1.11%、1.28%和1.47%,实验结果与计算结果吻合很好.当熔池温度分别为580、600和620℃时,在Zn-30%Al-2%Fe-x Si合金中刚开始出现τ5相时所对应硅质量分数的计算值分别为0.6%、0.72%和0.84%,发生Fe Al3相消失对应的锌池中硅质量分数的计算值分别为1.12%、1.22%和1.34%,实验结果与计算预测结果基本一致.
The solubility of silicon in the liquid phase of Zn-50% Al-x Fe-y Si (atomic fraction) molten pool at different temperatures was calculated by Thermo-Calc software. Mass fraction) began to form molten pool τ5 slag phase and Fe Al3 slag phase disappeared when the molten silicon in the bath, the equilibrium alloy method was used to determine the Zn-50% Al-x Fe-y Si alloy liquid phase of silicon solubility and different The content of silicon in Zn-50% Al-x Fe-x Si alloy at the temperature of 540, 560, 580, 600 and 620 ℃ respectively. The calculated results of the solubility (atomic number) in the liquid phase of the system are 0.82%, 0.95%, 1.11%, 1.28% and 1.47% respectively. The experimental results agree well with the calculated results. When the bath temperature is 580, 600 and 620 ℃, the calculated values of the mass fraction of silicon corresponding to the beginning of τ5 phase in Zn-30% Al-2% Fe-x Si alloy are 0.6%, 0.72% and 0.84%, respectively, corresponding to the disappearance of Fe Al3 phase The calculated values of the mass fraction of silicon in the zinc pool are 1.12%, 1.22% and 1.34%, respectively. The experimental results are in good agreement with the calculated results.