Stainless steel (SS), widely used because of its outstanding corrosion protection properties, does not possess any particular anti-stain or anti-bacterial activity as required for household and sanitary applications. This work reports the fabrication SS thin films that, keeping a similar resistance than bulk material, presents hydrophobicity activity. These are prepared at ambient temperature b...

nanoporous graphene which is used as nanosorbent was synthesized by chemical vapor deposition method via porous zinc oxide nanocatalyst. the reaction was carried out using methane as the carbon source and hydrogen as the carrier gas in a ratio of 4:1 at the temperature ranging 900-1050°c for 2-50 min. the product was characterized by scanning electron microscopy, transmission electron microscop...

Thermal barrier coatings (TBCs), consisting of physical vapor deposited (PVD) partially stabilized zir-conia (PSZ, 8 wt. %Y203) and a diffusion aluminide bond coat, were characterized as a function of time after oxidative isothermal heat treatment at 1373 K in air. The experimental characterizations was conducted by X-ray diffraction analysis and scanning electron microscopy (SEM) with energy-d...

Rare-earth zirconates are proven to be very effective in restricting the CMAS attack against thermal barrier coatings (TBCs) by forming quick crystalline reaction products that seal porosity infiltration. The microstructural effects on efficacy of Electron Beam-Physical Vapor Deposition gadolinium zirconate (EB-PVD GZO) explored this study. Four distinct GZO microstructures were manufactured an...

The paper presents the application of Closed Hollow Cathode Physical Vapor Deposition (CHC-PVD) method for depostion Ti-Al-Cr-Y-Si coatings on ?-TiAl 48-2-2 alloy high temperature oxidation protection. study concerned analysis coating’s growth mechanism, initial microstructure as well phase transformations investigations using resolution Scanning Transmission Electron Microscopy (STEM) and X-ra...

Abstract Dense, uniform, and well-adhered chromium (Cr) coatings were deposited on zirconium (Zr) alloy claddings by using physical vapor deposition (PVD). The Cr-coated samples tested at 1200 o C 1300 C, respectively, for different exposure time in water steam environment. Microstructures compositions of the coating/substrate system after oxidation characterized X-ray diffraction, scanning ele...

Thermal barrier coatings (TBCs) suffer from the thermo-chemo-mechanical coupling action of thermal shock and calcium–magnesium–alumina–silicate (CMAS) corrosion. However, failure mechanism TBCs under synergistic effect CMAS corrosion is still unclear due to a lack an environmental simulator. Herein, 8YSZ ceramic coating deposited on PtAl bond coating/DD419 nickel-based single crystal superalloy...