Details

Autor(en) / Beteiligte

• Madapana, Dileep
• Bathe, Ravi
• Manna, Indranil
• Dutta Majumdar, Jyotsna

Titel

Studies on Surface Characteristics and Biocorrosion Behavior of Ultrafast Laser‐Structured Titanium Alloy (Ti6Al4V)

Ist Teil von

• Physica status solidi. A, Applications and materials science, 2024-08, Vol.221 (15), p.n/a

Ort / Verlag

Weinheim: Wiley Subscription Services, Inc

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Herein, the detailed corrosion behavior of ultrafast laser‐surface structured Ti6Al4V (using a Ti: Sapphire laser processed under optimum parameters) is carried out in simulated body fluid using electrochemical impedance spectroscopy and correlated with surface characteristics. Laser structuring leads to a topographically modified surface consisting of periodic surface patterns (nanoripples, nanodots) in the presence of a thin oxide layer. Surface processing introduces strain on the surface up to a depth of 150 μm, with the grains aligned along the (101¯0)$\left(\right. 10 \bar{1} 0 \left.\right)$ and (21¯1¯0)$\left(\right. 2 \bar{1} \bar{1} 0 \left.\right)$ planes. The detailed electrochemical impedance spectroscopic studies show the formation of stable passive layers in surface‐structured Ti6Al4V as compared to as‐received Ti6Al4V. Ultrafast laser periodic surface structuring (LPSS) on Ti6Al4V alloy enhances corrosion resistance by forming a microstructure with increased low‐angle grain boundaries, introducing strain, and nanosized TiO2 and Ti2O3 oxide scales on the surface. Electrochemical impedance spectroscopy reveals a thin oxide layer formed during LPSS, promoting stronger passive layer formation and contributing to superior corrosion resistance in simulated body fluid.