M. T. Acar

Effect of potassium fluoride on the structure and corrosion properties of anodic coatings on Ti6Al4V alloy

Introduction

Effect of potassium fluoride on the structure and corrosion properties of anodic coatings on ti6al4v alloy. Explore the effect of potassium fluoride (KF) anodic coatings on Ti6Al4V alloy's structure and corrosion properties, with high resistance in simulated body fluid for biomedical use.

Abstract

In this study, KF film was obtained by anodization method on Ti6Al4V material, which is preferred to be used in many areas such as the defense industry, biomedical field and aviation sector. The aim of this study is to compare the corrosion resistance of untreated Ti6Al4V, TiO2 coated Ti6Al4V and KF (potassium fluoride) coated Ti6Al4V samples. XRD and SEM were used for the structural characterization of the samples. Corrosion experiments were performed in simulated body fluid (SBF). According to the results, the highest corrosion resistance was obtained in the new morphological structure obtained by KF coating of the volcano-type structures.

Review

This abstract presents a timely investigation into enhancing the surface properties of Ti6Al4V, a critically important alloy widely utilized in defense, biomedical, and aerospace industries. The study clearly outlines its objective: to comparatively assess the corrosion resistance of untreated, TiO2-coated, and novel potassium fluoride (KF)-coated Ti6Al4V samples. The introduction of KF as an anodic coating for this material is a particularly interesting aspect, signaling a potential avenue for developing advanced surface modifications to meet the stringent demands of its application environments. Methodologically, the research employs anodization for generating the KF and TiO2 films, with structural characterization conducted via XRD and SEM – standard and appropriate techniques for such materials. Corrosion performance was rigorously evaluated in simulated body fluid (SBF), a choice directly relevant given Ti6Al4V's significant use in biomedical implants. The core finding—that the KF coating significantly enhances corrosion resistance, especially when forming a "volcano-type" morphological structure—is compelling. This suggests that a specific surface architecture, combined with the chemical influence of KF, provides superior protective qualities compared to the control and TiO2-coated samples. In conclusion, this abstract outlines a promising line of inquiry with direct practical implications for improving the service life and performance of Ti6Al4V alloys. The identification of a KF-derived coating with a superior "volcano-type" morphology as a highly effective anti-corrosion layer is a notable achievement. A full paper would ideally expand upon the detailed characterization of this unique morphology, the exact mechanisms by which KF contributes to enhanced corrosion resistance, and potential insights into the long-term stability of these coatings. Nevertheless, the presented work makes a valuable contribution to the field of surface engineering for high-performance alloys.

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