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Abstract <p>Electrochemical co-deposition of Mo and Ni from NaCl–KCl–MoCl<sub>3</sub>–NiCl<sub>2</sub> melt at 720°C is studied. The results of studying Ni and Ni–Mo cathodic deposits obtained by electrolysis in the cathodic current density range of 0.01–0.05 A/cm<sup>2</sup> are presented. The conditions of electrolysis of NaCl–KCl–MoCl<sub>3</sub>–NiCl<sub>2</sub> melt providing production of nickel-molybdenum coatings on MPG-8, AISI 316 L, CrNi<sub>80</sub>MoTiAl substrates in an argon atmosphere are revealed. It is found that compact deposits of Mo–Ni alloys can be obtained at a cathodic current density of up to 0.03 A/cm<sup>2</sup>. It is shown that at cathodic current densities above 0.03 A/cm<sup>2</sup>, dendritic deposits are deposited. Dendritic formation was observed at the three-phase boundary MPG-8/electrolyte/argon. The chemical composition of Mo–Ni precipitates corresponds to the compounds Ni<sub>4</sub>Mo, Ni<sub>3</sub>Mo, which is consistent with the Ni–Mo phase diagram.</p>

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Production of Mo–Ni Coatings by Melt Electrolysis NaCl–KCl–MoCl3–NiCl2

  • 期刊论文

  • 发表日期：

    2025年10月1日

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  • A. A. Chernyshev,
  • A. V. Isakov,
  • A. P. Apisarov,
  • L. M. Minchenko,
  • S. P. Arkhipov

摘要

Abstract

Electrochemical co-deposition of Mo and Ni from NaCl–KCl–MoCl3–NiCl2 melt at 720°C is studied. The results of studying Ni and Ni–Mo cathodic deposits obtained by electrolysis in the cathodic current density range of 0.01–0.05 A/cm2 are presented. The conditions of electrolysis of NaCl–KCl–MoCl3–NiCl2 melt providing production of nickel-molybdenum coatings on MPG-8, AISI 316 L, CrNi80MoTiAl substrates in an argon atmosphere are revealed. It is found that compact deposits of Mo–Ni alloys can be obtained at a cathodic current density of up to 0.03 A/cm2. It is shown that at cathodic current densities above 0.03 A/cm2, dendritic deposits are deposited. Dendritic formation was observed at the three-phase boundary MPG-8/electrolyte/argon. The chemical composition of Mo–Ni precipitates corresponds to the compounds Ni4Mo, Ni3Mo, which is consistent with the Ni–Mo phase diagram.