Laser surface structuring of stainless-steel alloy for biomedical implants application
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Date
2024
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UMT, Lahore
Abstract
This work aims to roughen the surface and enlarge the surface area of the sample material, stainless steel alloy 304S, through laser surface structuring (LSS) for biomedical applications. LSS is used to alter the surface of sample material by developing various patterns, textures, and microstructures on the surface. In this study, the surface treatment of stainless steel alloy 304S was performed using 1064nm ND:YAG laser. After LSS, field emission electron microscopy (FESEM) was used to determine the surface morphology. FESEM is an advanced technique employed to obtain the microstructure of the material. The FESEM results showed pits on the stainless steel alloy 304S. Pits greatly increase biomedical implants' surface area, biocompatibility, usefulness, and performance. A wettability test was conducted to check the hydrophilicity or hydrophobicity of the laser-treated sample by using the sessile drop method. Wettability is measured by angle measurement. If the angle is greater than 90 degrees, the surface is hydrophobic, if the angle is less than 90 degrees, the surface is hydrophilic. Wettability determines how well the material will be accepted by the human body. The sample's contact angle was 78 degrees, according to the results. Because the sample's contact angle is below 90 degrees, it is hydrophilic and wettable. Therefore, the treated sample is suitable for bioimplants.