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A novel ion implantation and Al/AlN/CrAlN/CrN/MoS 2 gradient duplex coating was used to improve the wear-corrosion synergy performance of AM60 magnesium alloy. The wear and corrosion behaviors of the as-deposited gradient duplex coating were subsequently investigated. The results showed that the gradient duplex coating has excellent wear resistance with the wear rate of 2.31 × 10 −6 ...
Al 2 O 3 ceramic coatings with different metallic bonding layers, i.e. Ni60, NiAl and FeAl, were prepared by the plasma spraying technique. To study the effect of bonding layer on corrosion behavior of plasma sprayed Al 2 O 3 coatings, metallic coatings were also prepared for direct use as working layer. Phase analyses of the coatings were determined by X-ray diffraction...
By means of magnetron sputtering method, pure Ti film with thickness of 1.25 μm was deposited on the surface of 5083 Al alloy specimens. The specimens were heated by ion bombardment in a plasma nitriding unit employing a mixed gas of N 2 and H 2 at 460 °C for 16 h. The treated surface layers of specimens were characterized by using SEM equipped with EDS, TEM, XRD analysis and nanoindentation...
Glass microspheres were treated with purified water to observe the formation of capillary bridges between the contacting microspheres using high resolution environmental scanning electron microscopy. The observed bridges between glass microspheres were found to shrink under exposure to the electron beam showing evidence of the gelatinous nature while identical experiments with gold spheres did not...
Alumina-silicate composite coatings were formed on titanium substrate by plasma electrolytic oxidation (PEO) process using a silicate-based electrolyte containing alumina nanoparticles. Microstructure, chemical and phase compositions, and thickness of the coatings were investigated to determine, coating mechanism and probable reactions during the process. The effect of processing time on corrosion...
Si/TiO 2 nano-composite and Si were coated on Mg–Ca alloy by physical vapour deposition (PVD). The surface morphology of specimens was characterised by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) equipped with energy dispersive X-ray spectroscopy (EDS) and atomic-force microscopy (AFM). The AFM results indicated that the average surface roughness of the nano-Si/TiO...
In this study, physical vapour deposition (PVD) method was carried out to prepare nano-titania (TiO 2 ) as an intermediate layer on Mg–Zn–Ce alloy and subsequently electrochemical deposition (ED) method was applied to develop nano-fluorine-doped hydroxyapatite (FHA) as an outer layer. X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR),...
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