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About Electrochemical Reactions Between a BaO- and a PbO-Rich Melt, Short-Circuited by Platinum

机译:关于铂短路的BaO和PbO含量高的熔体之间的电化学反应

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摘要

The "Reboiling" effect is well known. If glass fragments with very different alkali oxide contents are remelted together in a platinum crucible, there can take place a local generation of gas bubbles. Similar effects were observed in a study of the Ba/Pb interdiffusion kinetics between two melts with the same molar composition (MO)_(33.3)(B_2O_3)_(66.7-s)(EO_2)_s (M = Ba and Pb, resp.; E = Ge, s = 0.15 and Si, s = 0.10, resp.). The thermodynamic potential of the melts and the electrochemical mobilities of the ions Ba~(2+) and Pb~(2+) will be discussed in connection with the above described phenomenon. At 700℃ the Ba/Pb ion-exchange in the ratio 1/1 shows a dominant viscosity-controlling. The formation of gas bubbles is caused by reactions, influenced by the experimental arrangement and by the melt compositions.
机译:“重煮”效果是众所周知的。如果具有不同碱金属氧化物含量的玻璃碎片在铂坩埚中重新熔化在一起,则可能会产生局部气泡。在具有相同摩尔组成(MO)_(33.3)(B_2O_3)_(66.7-s)(EO_2)_s的两个熔体之间的Ba / Pb互扩散动力学研究中观察到了类似的效果(M = Ba和Pb,分别; E = Ge,s = 0.15,Si,s = 0.10,分别。将结合上述现象讨论熔体的热力学势和离子Ba〜(2+)和Pb〜(2+)的电化学迁移率。在700℃下,Ba / Pb离子交换比例为1/1,显示出主要的粘度控制。气泡的形成是由反应引起的,受实验安排和熔体组成的影响。

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