Document Type : Original Research
Authors
1 Department of Prosthetics & Orthotics Engineering, College of Engineering and Technology, Al-Mustaqbal University, Babylon - Hilla, Iraq
2 Department of Prosthetics & Orthotics Engineering, College of Engineering, Al-Nahrain University, Baghdad, Iraq
Abstract
Background: Nanocoating of biomedical materials has emerged as a crucial emerging discipline, to enhance tribological behaviors, durability, and performance of materials.
Objective: This study aimed to investigate the tribological characteristics of substrates coated with Hydroxyapatite (HAp) and Silica glass (SiO2).
Material and Methods: In this experimental study, the substrates were Ti-6Al-4V, a widely used titanium alloy for osseointegration implants. The substrates were coated with 90% HAp and 10% SiO2 via the plasma cold spray technique. The friction examination was analyzed at room temperature and under the Simulated Body Fluid (SBF) condition using the pin-on-disc technique.
Results: The microstructural analysis confirmed the coated technique in producing a nano-sized layer. While the pin-on-disc test indicates that nanocoated Ti-6Al-4V specimens have a significantly higher average coefficient of friction than uncoated specimens, surface roughness is the primary contributor.
Conclusion: Through microstructure properties and tribological behavior, the coated alloy may provide a benefit in circumstances, in which lubrication availability is restricted or undesirable, such as when the implant comes into contact with the bone interface.
Highlights
Muntadher Saleh Mahdi (Google Scholar)
Keywords
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