Abstract

Nanocoatings thin films are layers deposited to improve required properties and corrosion resistance as a major objective for materials that are used for various biomedical applications such as biosensors. In this study, Gold (Au) thin films with 50 nm and 100 nm have been synthesized on Ni-Cr-Mo alloys by magnetron sputtering deposition technique. X-Ray diffraction (XRD), Atomic Force Microscopy (AFM), and Energy-dispersive X-Ray spectroscopy /Scanning Electron Microscopy (EDS/SEM ) have been used to distinguish the surfaces morphology. The results showed that there is no defects or micro-cracks with a uniform and homogenous film. It has spherical nanoparticles diameter morphology with 200-400 nm shaped to fine aggregation. The roughness average (Ra) decreased from 3.91 nm for 50 nm films to 3.70 nm for 100nm films with FCC crystal structure (111) for gold thin films. In vivo, after 50 nm and 100 nm nanocoated thin film by gold, a significant improvement in the localized corrosion resistance has been obtained in artificial saliva corrosive media at 37 °C compared with the uncoated surface.

Highlights

  • Nanotechnology is the branch of applied science that examines materials on a scale of one to one hundred nanometers

  • The results showed that the annealing procedure affects the optical properties and function of gold films and that the peak of Plasmon resonance in structures is amplified by increasing the temperature of glass during evaporation, which causes major changes in surface morphology

  • EDS results registered broad conclusions to assess the density of each element and in this study, Au nanostructured thin films deposited indicators that Au is a pure element with high density

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Summary

Introduction

Nanotechnology is the branch of applied science that examines materials on a scale of one to one hundred nanometers (nm). Tanaka et al.[3] reviewed several novel properties that happen when the dimensions of solid material shrunk to the point of no return comprise tens to a few thousand atoms Due to their specific electrical and optical properties, nanostructured deposition plays a crucial role in several science and technology materials. Priyadarshini et al.[6] clarified that coating the surface of implant alloys increases the corrosion resistance while improving the biocompatibility. The results showed that the annealing procedure affects the optical properties and function of gold films and that the peak of Plasmon resonance in structures is amplified by increasing the temperature of glass during evaporation, which causes major changes in surface morphology. Wadullah et al.[11] investigated that the corrosion resistance of implant alloys can be achieved by annealed gold nanocoated with 17nm and 34nm thickness

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