PERFORMANCE OF THERMAL SPRAY COATED METALLIC MATERIALS FOR BIO-IMPLANT APPLICATIONS

Praveen Kumar Verma (), Amrinder Mehta (), Hitesh Vasudev and Vinod Kumar ()
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Praveen Kumar Verma: Department of Mechanical Engineering, Punjabi University, Patiala 147002, India
Amrinder Mehta: Research and Development Cell, Lovely Professional University, Phagwara 144411, India
Hitesh Vasudev: School of Mechanical Engineering, Lovely Professional University, Phagwara 144411, India
Vinod Kumar: Department of Mechanical Engineering, Punjabi University, Patiala 147002, India

Surface Review and Letters (SRL), 2025, vol. 32, issue 06, 1-15

Abstract: Metallic biomaterials are used to replace and rebuild human structural components due to their biocompatibility, corrosion resistance, and good mechanical properties. Biomedical metals have been used for 30 years. Medical implants use metallic biomaterials. Metallic biomaterials are needed to cure failed hard tissue, bone, and fractures. Because they’re strong, tough, and long-lasting. As the world population ages and seniors are more prone to experience hard tissue disintegration, there is a huge demand for improved metallic biomaterials. Titanium-based alloys, cobalt-based alloys, and stainless steel are feasible metallic biomaterials (316L). These biomaterials’ Young’s modulus should match that of human bones, reducing stress shielding. Implant designs include plates, rods, screws, and pins. Since the FDA approved these biocompatible metallic implants, orthopedic practices often employ them. Metals aren’t believable as biomaterials because they’re synthetic and have insufficient bio-functionality. The biocompatibility of metallic biomaterials must be considerably enhanced. Metallic biomaterials are often synthetic materials with no biological activity. The key issue is coating-to-substrate adhesion. Cover spalling from the substrate causes implant and tissue responses. Due to inadequate crystallization, the hydroxyapatite (HA) coating degrades, increasing implant failure risk by lowering titanium adhesion. Coated 316L stainless steel specimens have better adherence than untreated ones. The coating/substrate material, coating process, and coating thickness are thoroughly identified and discussed. The surface structure and microstructure of HA-based coating are explored to support the conclusions.

Keywords: Metallic biomaterials; superior biocompatibility; structural components; 316L; adhesion; treatment; implants; tissue (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1142/S0218625X23400127

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