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Abstract
The aim of the present work is to achieve the controlled synthesis of Ti and Mg thin films, with compact structure and extremely smooth surface, by using the Thermionic Vacuum Arc (TVA) technology, from elemental powder of titanium and magnesium. The thin film exhibits an amorphous structure, with polycrystalline grain mainly being Mg hexagonal phase and small amount of hexagonal Ti. Grain mean size was estimated to be ~120nm by statistical analysis of measured Feret diameter of projected area of grain. The phases were tested by mean of Cohen method applied to electron diffraction results. No oxide (MgO, TiO2,) lines could be identified from electron diffraction. Debye-Scherrer dimension, estimated from electron diffraction profile is ~4 nm. The analysis of amorphous part from diffraction profile show different coordination number for Mg and Ti atoms.
Highlights
Thermionic Vacuum Arc (TVA) is a versatile deposition method combining anodic arc and electron gun systems for the growth of thin films. [16,17,18] In this paper we focused on the effects of Mg amount in the the titanium matrix, in terms of microstructural, morphological and mechanical properties
Scanning electron microscope (SEM) investigations revealed that the Ti-Mg thin films on each substrates were compact and uniform, while the average particle sizes of the nanoparticles composing the Ti-Mg thin films on different substrates are in range of ~4 nm corresponding with the calculated particles achieved by the Scherrer equation
Selected area electron diffraction (SAED) technique provided the crystalline characteristics of the titanium in magnesium matrix
Summary
Advanced materials at the nanometric scale started to be real dimensions for coating the components on production line. [1,3] titanium based nanocomposites owing to their remarcable properties of the coating surfaces such as wear resistance, roughness, low friction coefficients have been synthetized and investigated in different combination and forms, such as multi-component composites. [4,5,6,7]Titanium (Ti) is an ideal metal for structural and biomedical applications, having good biocompatibility, mechanical properties and high corrosion resistance. [811] By combining Ti and Mg, the resulting Ti–Mg alloys are expected to be useful as metallic biomaterials with good mechanical properties and anticorrosion properties. [12,13]. [1,3] titanium based nanocomposites owing to their remarcable properties of the coating surfaces such as wear resistance, roughness, low friction coefficients have been synthetized and investigated in different combination and forms, such as multi-component composites. Titanium (Ti) is an ideal metal for structural and biomedical applications, having good biocompatibility, mechanical properties and high corrosion resistance. [811] By combining Ti and Mg, the resulting Ti–Mg alloys are expected to be useful as metallic biomaterials with good mechanical properties and anticorrosion properties. Because the wear resistance of magnesium products is not nearly as good as steel in ambient and high temperatures, there is a strong request to find a way that can guarantee better wear resistance in the aggressive atmosphere environment [14]. Surface treatments are used to improve the surface properties such as wear resistance and corrosion resistance
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