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Influence of Additives on the Width of the Metastable Zone

机译:添加剂对亚稳区宽度的影响

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摘要

The width of metastable zone of unseeded potassium alum solutions was determined for different conditions and in the presence of additives. The measurements were taken at three different cooling rates and for three different saturation temperatures at a cooling rate of 10 K/h by means of an ultrasonic measuring technique. The influence of Cr~(3+), Cu~(2+), and Mg~(2+) ions on the width of metastable zone of a potassium alum solution was investigated at a cooling rate of 5 K/h. The influence of Mg~(2+) ions on the width of metastable zone of potassium chloride solutions was also investigated at a cooling rate of 10 K/h. Cr~(3+), Cu~(2+), and Mg~(2+) ions show both enlargement and suppression effects on the width of metastable zone of potassium alum and potassium chloride solutions depending on their concentrations. Cr~(3+), Cu~(2+), and Mg~(2+) ions also change the saturation temperature of potassium alum solutions depending on their concentrations.
机译:在不同条件下和添加剂存在下,测定了未接种钾明矾溶液的亚稳区宽度。通过超声波测量技术,在三种不同的冷却速率和三种不同的饱和温度下,以10 K/h的冷却速率进行测量。研究了Cr~(3+)、Cu~(2+)和Mg~(2+)离子对钾明矾溶液亚稳区宽度的影响。在10 K/h的冷却速率下,还研究了Mg~(2+)离子对氯化钾溶液亚稳区宽度的影响。Cr~(3+)、Cu~(2+)和Mg~(2+)离子对钾明矾和氯化钾溶液亚稳区宽度的放大和抑制作用取决于其浓度。Cr~(3+)、Cu~(2+) 和 Mg~(2+) 离子也会根据钾明矾溶液的浓度改变饱和温度。

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  • 来源
    《Crystal growth & design》 |2002年第5期|371-374|共4页
  • 作者

    S. Titiz-Sargut; J. Ulrich;

  • 作者单位

    Istanbul Technical University, Faculty of Chemical and Metallurgical Engineering, Chemical Engineering Department, Istanbul, Turkey;

    Martin-Luther-Universitat Halle-Wittenberg, FB Ingenieurwissenschaften, Institut fur Verfahrenstechnik/TVT, Halle, Germany;

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  • 原文格式 PDF
  • 正文语种 英语
  • 中图分类 晶体学;
  • 关键词

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