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Nanoparticles

Diamond Nanoparticles Enhance Coating Performance on Zirconium Substrates

Strategic Insights

— 1 min read

Researchers from Semnan University, Iran, have explored the effect of diamond nanoparticle concentrations on the performance of polyetherimide (PEO) coatings on zirconium substrates. The study, peer-reviewed and published in Surface & Coatings Technology, reveals that diamond nanoparticles filled the coating pores, reducing surface roughness and increasing deposition rates and coating thickness as the concentration increased.

Key Takeaways:

  • The incorporation of diamond nanoparticles significantly enhanced the corrosion, mechanical, and tribological properties of the coatings.
  • The 0.5 g/L nanoparticle concentration exhibited the highest hardness (12.64 GPa) and Young's modulus (245 GPa), representing a 405% increase in hardness compared to pure zirconium.
  • Electrochemical tests showed that the 0.5 g/L sample had the best corrosion resistance, acting as an effective barrier against corrosive agents, with a 99.54% reduction in corrosion current density compared to pure zirconium.
  • Tribological analysis demonstrated improved wear resistance and lower friction, with the 0.5 g/L coating achieving the lowest coefficient of friction of 0.224.
  • The research concluded that the 0.5 g/L nanoparticle concentration emerged as the most effective concentration based on quantitative results.
  • Funders for this research include Semnan University, Advanced Materials and Surface Engineering Laboratories.
  • Additional authors for this research include Noori Mohsen, Abdollah-Pour Hassan, and Pishbin Hassan.

Statistics:

  • 0.5 g/L diamond nanoparticle concentration exhibited the highest hardness (12.64 GPa).
  • 0.5 g/L sample had a 99.54% reduction in corrosion current density compared to pure zirconium.
  • 0.224 was the lowest coefficient of friction achieved by the 0.5 g/L coated sample.
  • 405% increase in hardness was observed for the 0.5 g/L nanoparticle concentration compared to pure zirconium.

Sources:

  • Surface & Coatings Technology, 2025;507.
  • Elsevier Science Sa, PO Box 564, 1001 Lausanne, Switzerland.
  • Yousefpour Mardali, Semnan University, Fac Mat & Met Engn, Semnan, Iran.
  • NewsRx. New Nanoparticles Findings Has Been Reported by Investigators at Semnan University (Effect of Diamond Nanoparticles On the Performance of Peo Coatings On Zirconium: Microstructural, Mechanical, Corrosion, and Tribological Properties). Nanotechnology Weekly. July 7, 2025; p 3288.

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