Improving Corrosion Resistance of Surgical Stainless Steel with Laser Treatment
Author Information
Author(s): Neves Vinicius da Silva, Correa Felipe Queiroz, Ferreira Murilo Oliveira Alves, Rodrigues Alessandro Roger, Wolf Witor, Galo Rodrigo, Yasuoka Fátima Maria Mitsue, Moreto Jéferson Aparecido
Primary Institution: University of São Paulo (USP)
Hypothesis
Can optimizing laser scanning parameters enhance the corrosion resistance of 316L stainless steel used in surgical devices?
Conclusion
The laser-treated 316L stainless steel showed significantly better corrosion resistance compared to untreated samples after immersion in saline solution.
Supporting Evidence
- The treated samples showed less negative open circuit potential, indicating better corrosion resistance.
- Potentiodynamic polarization curves revealed lower corrosion current density for treated samples.
- The pitting potential was significantly higher for the laser-treated samples compared to untreated ones.
- Electrochemical impedance spectroscopy indicated enhanced resistance to corrosion for treated samples.
Takeaway
This study found that using a special laser treatment can make surgical tools made of stainless steel last longer by preventing rust.
Methodology
The study involved treating 316L stainless steel samples with a nanosecond pulsed fibre laser and assessing their corrosion resistance using various electrochemical techniques.
Limitations
Further studies are needed to evaluate the effectiveness of laser treatment in different aggressive environments.
Digital Object Identifier (DOI)
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