Abstract
The present article focuses on a recently developed new system of alloys (Ti15MoSi) coated with ZrO2. The thin coatings deposition of ZrO2 on titanium alloys can be a solution to improve their corrosion resistance, biocompatibility, and to extend their long life with the human tissue. In order to improve the corrosion resistance, atmospheric plasma spraying coatings with zirconia have been performed. These coatings present a homogenous aspect with very few cracks. The novelty of the research is that zirconia is much stable in the simulated body fluids and presents no harm effects to the healing process of the bone. To analyze the thin coatings deposition, mechanical properties, chemical structure, and corrosion resistance were examined by a modulus of elasticity, X-ray diffraction (XRD), scanning electron microscopy-energy-dispersive X-ray spectroscopy (SEM-EDS), and linear polarization. The results reveal that Young’s modulus shows a low value (51 GPa for Ti15Mo0.5Si-ZrO2 and 48 GPa for Ti15Mo-ZrO2) and the XRD patterns show the presence of β-Ti and ZrO2 phases having a tetragonal crystalline structure. The research highlighted the morphological aspect of zirconia coatings on the new alloy titanium substrate, being an adherent compact coating with significantly improved corrosion resistance. Moreover, the mechanical properties are similar to the biological bone, which will avoid the stress shielding of the implant with bone tissue.
Highlights
Health is a very important issue and researchers work hard to improve alloys for medical applications [1]
The materials used for medical applications must include biocompatible elements with mechanical properties suitable for the system that replaces it and a high corrosion resistance [6]
Titanium and its alloys have attracted the attention of scientists [10] and are of great interest for use in medical applications, since they have important characteristics, which are required by implant materials including good mechanical properties, high biocompatibility, and a good corrosion resistance [11,12]
Summary
Health is a very important issue and researchers work hard to improve alloys for medical applications [1]. Titanium and its alloys have attracted the attention of scientists [10] and are of great interest for use in medical applications, since they have important characteristics, which are required by implant materials including good mechanical properties (lower modulus of elasticity than stainless steel or CoCr alloys, fatigue strength, strength corrosion), high biocompatibility, and a good corrosion resistance [11,12]. These materials have multiple uses in orthopedics, dentistry, maxillofacial surgery, and cardiovascular surgery [10,12]. Ti-Mo-Si with good mechanical properties and low corrosion resistance are suitable for medical applications as orthopedic implants
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