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首页> 外文期刊>Russian Journal of Non-Ferrous Metals >Theoretical Fundamentals and Practical Implementation of Electrometallurgical Processes of Producing Disperse Zirconium Diboride Powders and Coatings
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Theoretical Fundamentals and Practical Implementation of Electrometallurgical Processes of Producing Disperse Zirconium Diboride Powders and Coatings

机译：生产分散二硼化锆粉末和涂层的电冶金工艺的理论基础和实际实施

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摘要

The electrochemical behavior of zirconium and boron and the synthesis of disperse zirconium diboride powders and coatings from the chloride-fluoride melts have been studied by voltammetry, galvanic and potentiostatic electrolysis, and X-ray phase analysis. It has been shown that the electrochemical reduction of Zr in the chloride-fluoride melts has the different mechanisms for the low and high concentration of the fluoride ion in the melt. In the first case, it proceeds according to the scheme of auto-inhibition; in the second case, the 4-electron reverse one-stage discharge process is observed. By adjusting the ratio [F~-] : [Zr(IV)] in the melt, it is possible to find the conditions for the implementation of the one-stage 4-electron discharge process of zirconium and its diboride. During the electrometallurgical synthesis of ZrB_2, the electro-active particles that formed as a result of the chemical interaction of zirconium- and boron-containing particles and that have different compositions than those formed in the partial zirconium- and boron-containing melts are discharged.
机译：通过伏安法，恒电位和恒电位电解以及X射线相分析，研究了锆和硼的电化学行为以及由氯化物-氟化物熔体合成分散的二硼化锆粉末和涂层的方法。已经表明，氯化物-氟化物熔体中Zr的电化学还原对于熔体中氟离子的低和高浓度具有不同的机理。在第一种情况下，它按照自动抑制的方案进行;在第二种情况下，观察到四电子反向单级放电过程。通过调节熔体中的比率[F〜-]：[Zr（IV）]，可以找到实施锆及其二硼化物的一级四电子放电过程的条件。在ZrB_2的电冶金法合成过程中，由于含锆和硼的颗粒之间的化学相互作用而形成的，与组成部分的含锆和硼的熔体中形成的组分不同的电活性颗粒被排出。

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