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首页> 外文期刊>Materials transactions >Influence of Current Density on the Reduction of TiO_2 in Molten Salt (CaCl_2 + CaO)
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Influence of Current Density on the Reduction of TiO_2 in Molten Salt (CaCl_2 + CaO)

机译：电流密度对熔盐（CaCl_2 + CaO）中TiO_2还原的影响

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摘要

Titanium dioxide (TiO_2) was successfully reduced at 1223 K by calcium, which was deposited due to the molten salt electrolysis of CaO dissolved in CaCl_2. The current density and the Ca concentration near the cathode were changed by varying the electrodes' surface areas and the distances between an anode and cathode, respectively. At the initial stage of reduction, metallic Ti powder with a lower oxygen concentration was obtained at a lower current density; in this case, most of the electrochemically deposited Ca was efficiently used for reduction. Meanwhile, at the final stage of deoxidation, Ti powder with a much lower oxygen concentration was obtained at a higher current density. In order to obtain metallic powder with a low oxygen concentration, the formed Ca should penetrate the inner part of the sintered sample.
机译：钙在1223 K下成功还原了二氧化钛（TiO_2），这是由于溶解在CaCl_2中的CaO的熔融盐电解而沉积的。通过分别改变电极的表面积和阳极与阴极之间的距离来改变阴极附近的电流密度和Ca浓度。在还原的初始阶段，以较低的电流密度获得了具有较低氧浓度的金属Ti粉末。在这种情况下，大部分电化学沉积的Ca被有效地用于还原。同时，在脱氧的最后阶段，以较高的电流密度获得了氧浓度低得多的Ti粉。为了获得低氧浓度的金属粉末，形成的Ca应渗透到烧结样品的内部。

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