研究目的
Investigating the effect of optical fiber laser marking and texturing techniques on the surface of ISO 5832-1 stainless steel, a commonly used biomaterial for permanent implants, via the Mott-Schottky approach.
研究成果
The pulsed laser treatment increases the susceptibility to corrosion by altering the roughness, microstructure, and surface chemical composition, affecting surface passivity. The Mott-Schottky technique effectively identified the impact of surface treatment on the electronic properties of the oxide layer, with changes in semiconductor behavior explaining the increased corrosion susceptibility in laser-treated areas.
研究不足
The study is limited to ISO 5832-1 stainless steel and may not be directly applicable to other biomaterials. The effects of laser parameters beyond pulse frequency were not explored.
1：Experimental Design and Method Selection:
The study employed the Mott-Schottky technique to evaluate the effect of laser marking and texturing on stainless steel surfaces.
2：Sample Selection and Data Sources:
ISO 5832-1 stainless steel samples were used, treated with pulsed laser for marking and texturing.
3：List of Experimental Equipment and Materials:
Optical fiber laser (Yb type) for engraving and texturing, Mott-Schottky setup for electrochemical evaluation.
4：Experimental Procedures and Operational Workflow:
Laser treatment was applied with varying pulse frequencies, followed by electrochemical characterization using Mott-Schottky technique to assess changes in electronic properties of the oxide layer.
5：Data Analysis Methods:
Analysis focused on changes in semiconductor behavior of the oxide layer to explain increased susceptibility to localized corrosion.
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