Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
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Development of PCM Color Coated Steel Sheets with Excellent Antiviral and Antimicrobial Properties

  • Du-Hwan Jo (Department of Steel Convergence Technologies, POSCO Technology University) ;
  • Seongil Kim (Color Solution Group, POSCO STEELEON) ;
  • Jinkyun Roh (Color Solution Group, POSCO STEELEON) ;
  • Doojin Paik (Automotive Steel Surface Research Group, POSCO Technical Research Laboratories) ;
  • Myungsoo Kim (Automotive Steel Surface Research Group, POSCO Technical Research Laboratories)
  • Received : 2024.01.11
  • Accepted : 2024.02.20
  • Published : 2024.04.30
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Abstract

Recently, due to the rapid spread and continuation of COVID-19, customer demand for health and hygiene has increased, requiring the development of new products that express antiviral and antibacterial properties. In particular, viruses are much smaller in size than bacteria and have a fast propagation speed, making it difficult to kill. POSCO has developed eco-friendly PCM color coated steel sheets with excellent antiviral properties by introducing inorganic composite materials to the color coating layer on the surface of Zn-Al-Mg alloy plated steels. The virus is not only destroyed by adsorption of metal ions released from the surface of the coating film, but is also further promoted by the generation of reactive oxygen species by the reaction of metal ions and moisture. As a result of evaluating the developed products under the International Standard Evaluation Act, the microbicidal activity was 99.9% for viruses, and 99.99% for bacteria and 0% fungi. In particular, excellent results were also shown in the durability evaluation for life cycle of the product. The developed product was applied as a wall of school classrooms and toilets and ducts for building air conditioning, resulting in excellent results. Developed products are being applied for construction and home appliances to practice POSCO's corporate citizenship.

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References

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