Investigation into the effects of laser texturing parameters on surface properties of Ti-6Al-4V ELI biomedical alloy

Kasman, Şefika; Uçar, İbrahim Can; Ozan, Sertan

doi:10.1007/s40430-023-04165-2

J Braz. Soc. Mech. Sci. Eng.

2023

DOI: 10.1007/s40430-023-04165-2

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Investigation into the effects of laser texturing parameters on surface properties of Ti-6Al-4V ELI biomedical alloy

Şefika Kasman

İbrahim Can Uçar

Sertan Ozan

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Cited by 4 publications

References 43 publications

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Surface Characteristics Influenced by Laser Texturing Parameters on Biomedical-Grade Aisi 316lvm Stainless Steel

KASMAN,

UÇAR,

OZAN

2023

Surf. Rev. Lett.

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Surface roughness and wettability, which characterize the texture formed on the implant surface, are critical features for the functionality of the implant. Laser texturing is a promising processing method because of the advantages it provides in creating a particular surface topography on the surface of a metallic implant material with a nanosecond pulsed laser beam. Different experimental combinations were created using a fiber pulsed marking device on the surface of AISI 316LVM implant material using the hatch strategy; textures depending on the scan speed, frequency, and hatch distance were created on the surface. The surface roughness and wettability evaluated the effects of parameters on the texture form. Based on the experimental and statistical results, while the scan speed was the most significant parameter affecting the wettability behavior and surface roughness, the hatch strategy and frequency also affected the surface roughness to some extent. Many textured surfaces showed super-hydrophilic behavior with a contact angle of 0[Formula: see text]. It has been determined that surface textures with the same or close roughness values did not exhibit the same wettability behavior. The lowest surface roughness of 2 [Formula: see text]m with a 132[Formula: see text] contact angle was obtained at a hatch strategy of 0[Formula: see text]/90[Formula: see text], a scan speed of 900 mm/s, a frequency of 100 kHz, and a hatch distance of 0.03 mm. Three-dimensional surface images show that while many craters formed the surface textures, overlapping consecutive beams and hatch strategies significantly affected the surface topography.

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Surface Characteristics Influenced by Laser Texturing Parameters on Biomedical-Grade Aisi 316lvm Stainless Steel

KASMAN,

UÇAR,

OZAN

2023

Surf. Rev. Lett.

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Laser textured Ti-6Al-7Nb alloy for biomedical applications: An investigation of texturing parameters on surface properties

Ozan,

Bilgin,

Kasman

2023

Proc Inst Mech Eng H

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Surface texturing with a laser beam is an effective method for engraving on the surface of biomaterials. The four laser texturing parameters (scan speed, frequency, fill spacing, and pulse width) having five different values were associated with five different scanning strategies (scan direction), and a total of 25 texturing conditions were tested on the Ti-6Al-7Nb alloy surface. The surface roughness and wettability of the textures created with a 20 W nanosecond fiber laser with a wavelength of 1064 nm on the surface of Ti-6Al-7Nb biocompatible alloy were investigated. Laser texturing parameters were analyzed according to the lowest surface roughness and a hydrophilic surface by creating L25 orthogonal arrays. The surface roughness values ranged between 2 and 26 µm. The lowest surface roughness with a value of 2.21 µm was achieved when the texture was processed with a frequency of 150 kHz, a fill spacing of 0.02 mm, a scan speed of 800 mm/s, a pulse width of 250 ns, and a cross-hatch strategy of 0°/90°. Considering the wettability test results, it was revealed that most of the textured surfaces have super hydrophilic and hydrophilic characteristics except the surface with a contact angle of 92.93°. The relevant surface was textured with 75 kHz frequency, 1000 mm/s scan speed, 0.05 mm fill spacing, 200 ns pulse width, and 45°/−45° cross-hatch strategy.

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Influence of pulse duration and frequency of laser surface texturing on the surface roughness and microstructure of CoCr28Mo alloy for biomedical applications

Kasman,

Ozan,

Wen

2024

Materials Testing

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This study presents the effects of pulse duration and frequency in laser surface texturing on the surface roughness and microstructure of CoCr28Mo alloy for biomedical applications. Texturing of the alloy surface was performed using 20 W fiber laser marking equipment. The pulse duration ranged from 50 to 300 ns and the frequency from 100 to 200 kHz. Higher frequencies generally correlated with reduced surface roughness, whereas pulse duration exhibited fluctuation. Statistical analyses confirmed the significance of both parameters and their interaction in affecting the surface roughness of the alloy. Optimal conditions with a pulse duration of 200–300 ns and a frequency of 200 kHz suggest potential for achieving a surface roughness less than 2 µm. The lowest surface roughness value of 0.81 ± 0.04 µm was achieved at a frequency of 200 kHz and a pulse duration of 300 ns. After removing the metal from the surface using this frequency and pulse duration during laser texturing, metal residues accumulated on the textured surface in spherical and layered forms, significantly affecting the surface roughness. This study emphasizes the complex relationship between laser surface-texturing processing parameters and surface properties, providing a promising approach for achieving the highly desirable surface roughness for biomedical applications.

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Investigation into the effects of laser texturing parameters on surface properties of Ti-6Al-4V ELI biomedical alloy

Cited by 4 publications

References 43 publications

Surface Characteristics Influenced by Laser Texturing Parameters on Biomedical-Grade Aisi 316lvm Stainless Steel

Surface Characteristics Influenced by Laser Texturing Parameters on Biomedical-Grade Aisi 316lvm Stainless Steel

Laser textured Ti-6Al-7Nb alloy for biomedical applications: An investigation of texturing parameters on surface properties

Influence of pulse duration and frequency of laser surface texturing on the surface roughness and microstructure of CoCr28Mo alloy for biomedical applications

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