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<p>The specifics of mass transfer, structure, and properties of electrospark-deposited coatings on steel 20Kh13 substrates using electrodes SHIM-40NAOKn (TiC − NiAl + ZrO<sub>2</sub><sup>nano</sup>) and SHIM-11OKn (TiB<sub>2</sub> − NiAl + ZrO<sub>2</sub><sup>nano</sup>) have been studied. The coatings were analyzed using X‑ray diffraction, scanning electron microscopy, energy-dispersive X‑ray spectroscopy, optical microscopy, and hardness testing. Tribological tests were carried out according to the “pin-on-disk” method, and heat resistance of the coatings was studied. It was found that the use of SHIM-40NAOKn electrodes results in cathode mass gain during the first 7 min of treatment, while the use of SHIM-11OKn electrodes leads to cathode mass loss during the entire 10 min of treatment. Substrate coatings formed by electrospark deposition exhibit 100% continuity and a&#xa0;thickness of 35–50 μm. The coating hardness ranges from 8.5&#xa0;to 11.0 GPa. The use of SHS-electrodes made it possible to increase the hardness of the surface layer by more than 5&#xa0;times, wear resistance—by 1.6&#xa0;times, and heat resistance—by 1.9&#xa0;times (800 °C, 32 h).</p>

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Peculiarities of formation of structure and properties of electrospark coatings on 20X13 steel using SHS-electrodes

  • 期刊论文

  • 发表日期：

    2025年10月8日

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  • A. E. Kudryashov,
  • S. K. Mukanov,
  • A. N. Sheveyko,
  • S. I. Rupasov,
  • E. A. Levashov

摘要

The specifics of mass transfer, structure, and properties of electrospark-deposited coatings on steel 20Kh13 substrates using electrodes SHIM-40NAOKn (TiC − NiAl + ZrO2nano) and SHIM-11OKn (TiB2 − NiAl + ZrO2nano) have been studied. The coatings were analyzed using X‑ray diffraction, scanning electron microscopy, energy-dispersive X‑ray spectroscopy, optical microscopy, and hardness testing. Tribological tests were carried out according to the “pin-on-disk” method, and heat resistance of the coatings was studied. It was found that the use of SHIM-40NAOKn electrodes results in cathode mass gain during the first 7 min of treatment, while the use of SHIM-11OKn electrodes leads to cathode mass loss during the entire 10 min of treatment. Substrate coatings formed by electrospark deposition exhibit 100% continuity and a thickness of 35–50 μm. The coating hardness ranges from 8.5 to 11.0 GPa. The use of SHS-electrodes made it possible to increase the hardness of the surface layer by more than 5 times, wear resistance—by 1.6 times, and heat resistance—by 1.9 times (800 °C, 32 h).