In this research, plasma electrolytic oxidation (PEO) was prepared at duty voltage of 350 and 450 V and processing time of 5 and 10 minutes on Ti-6Al-4V alloy in Na2SiO3 + KOH electrolyte. Then, the adhesion strength and microstructural degradation of the coating surface were investigated through a constant load scratch test, field-emission scanning electron microscope (FE-SEM), and X-ray diffraction (XRD), respectively. The results showed that while increasing the processing time and duty voltage, the density of porosity and the amount of rutile on the coating surface increased. Meanwhile, microstructure degradations like delamination, gross spallation, and buckling spallation decreased due to increased adhesion strength. This resulted from an increase in voltage and processing time. تفاصيل المقالة

Today, carbon materials are among the most widely used materials in the field of scientific-technological leaps. The biochemical properties of these materials have led to their widespread use in medical and biomechanical fields, and their different and special morphology has led to their suitable replacement for body tissues and solving joint problems and osteochondral problems. However, more systematic approaches to the engineering design of carbon-based cells and scaffolds are needed, and the related challenges still need to be addressed through extensive research. In this research, a comprehensive study of carbon materials and their benefits in medicine is done, focusing on increasing the effect of these materials in the area of osteochondral and joint repair and regeneration. In this regard, a review of all types of carbon allotropes including diamond, graphene compounds, fullerene, carbon nanotubes, amorphous carbon, and carbon dots has been done and the Biocompatibility properties of scaffold carbon base materials have been investigated. تفاصيل المقالة