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Mechanical engineering

New Research Reveals Key to Improving Service Performance of Cladding Layers

Strategic Insights

— 1 min read

Researchers at the University of Science & Technology Liaoning have discovered a novel method to enhance the service life of cladding layers. By preparing a Ni-Co dual-phase cladding layer on a QT600 surface, the layer's service performance can be significantly improved. However, the introduction of pore defects during this process can lead to pitting corrosion. A new study has quantified the mechanism of influence of pore defect transverse distribution on pitting corrosion, providing a theoretical foundation for enhancing the service life of cladding layers.

Key Takeaways:

  • The preparation of Ni-Co dual-phase cladding layer on QT600 surface is an effective way to improve service performance, but pore defects are inevitably introduced during this process.
  • Pore defects can lead to pitting corrosion, which can compromise the service life of the cladding layer.
  • A three-dimensional numerical model was established to examine the effect of pore defect transverse distribution on pitting corrosion in Ni-Co dual-phase cladding layer.
  • Electrochemical analysis of the cladding layer showed superior corrosion resistance compared to the QT600 surface.
  • The connection between pores and pitting corrosion becomes the main corrosion area in the pitting pit, leading to an elevated corrosion rate.
  • The research has been peer-reviewed and published in the Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science.
  • The study was funded by the Applied Basic Research Program of Liaoning Province, Project for Graduate Education Reform and Technological Innovation and Entrepreneurship of University of Science and Technology Liaoning, The Liaoning Province Metallurgical equipment and process control key laboratory open project, and Fundamental Research Funds for the Liaoning Universities.

Statistics:

  • The study found that the potential difference between the interior and exterior of pitting pit increases with the increase of pore distance, leading to an elevated corrosion rate within the pitting pit.
  • The research demonstrated that the Ni-Co dual-phase cladding layer shows superior corrosion resistance compared to the QT600 surface.
  • The three-dimensional numerical model was established to examine the effect of pore defect transverse distribution on pitting corrosion in Ni-Co dual-phase cladding layer.

Sources:

  • Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2025
  • Influence Mechanism of Pores Defect Transverse Distribution On Pitting Failure In Ni-co Dual-phase Laser Cladding Layer
  • Sage Publications Ltd, 1 Olivers Yard, 55 City Road, London EC1Y 1SP, England
  • VerticalNews, October 20, 2025, NewsRx, LLC

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