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Abstract <p>This paper proposes a method for increasing the corrosion resistance of a titanium alloy based on its polarization with an alternating current of infra-low-frequency in an electrolyte of the composition 1 g/L PdCl<sub>2</sub> + 1.0 M NaCl. Scanning electron microscopy and Auger spectroscopy showed that particles of a new phase—elemental palladium with a particle size in the range of 0.050–0.500 μm—were detected on the modified sample surface in all areas of analysis. In addition, the accelerated corrosion tests in a concentrated HCl environment (5.0 M) were carried out to evaluate the anticorrosion properties of the surface-alloyed titanium-alloy sample. A significant shift in the potential values to more positive values (up to 300 mV) of the studied titanium-alloy sample with a local coating indirectly indicates an increase in its corrosion resistance.</p>

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Electrochemical Local Alloying of the Surface of Titanium Alloys

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • A. F. Dresvyannikov,
  • A. N. Akhmetova

摘要

Abstract

This paper proposes a method for increasing the corrosion resistance of a titanium alloy based on its polarization with an alternating current of infra-low-frequency in an electrolyte of the composition 1 g/L PdCl2 + 1.0 M NaCl. Scanning electron microscopy and Auger spectroscopy showed that particles of a new phase—elemental palladium with a particle size in the range of 0.050–0.500 μm—were detected on the modified sample surface in all areas of analysis. In addition, the accelerated corrosion tests in a concentrated HCl environment (5.0 M) were carried out to evaluate the anticorrosion properties of the surface-alloyed titanium-alloy sample. A significant shift in the potential values to more positive values (up to 300 mV) of the studied titanium-alloy sample with a local coating indirectly indicates an increase in its corrosion resistance.