Abstract: A coating composition for carbon steel includes a titanium dioxide hindered amine light stabilizer (TiO2-HALs) nanocomposite and an epoxy resin. The TiO2-HALs nanocomposite is present in the coating composition in an amount 1 to 10 wt. % based on the weight of the coating composition. The TiO2-HALs nanocomposite includes a homogenous distribution of TiO2 nanoparticles in a HALs matrix. A method of producing the coating includes synthesizing the TiO2/HALs nanocomposite, mixing the epoxy resin, and the TiO2/HALs nanocomposite for 6 to 10 h at a temperature of 25 to 75° C.

Abstract: A coating composition for carbon steel includes a titanium dioxide hindered amine light stabilizer (TiO2-HALs) nanocomposite and an epoxy resin. The TiO2-HALs nanocomposite is present in the coating composition in an amount 1 to 10 wt. % based on the weight of the coating composition. The TiO2-HALs nanocomposite includes a homogenous distribution of TiO2 nanoparticles in a HALs matrix. A method of producing the coating includes synthesizing the TiO2/HALs nanocomposite, mixing the epoxy resin, and the TiO2/HALs nanocomposite for 6 to 10 h at a temperature of 25 to 75° C.

Abstract: A magnesium alloy material includes a bulk portion, and a surface oxide layer formed on the bulk portion. The surface oxide layer includes magnesium oxide, hexagonal boron nitride nanosheets, nanoclay and stannate. The bulk portion includes based on a total weight of the bulk portion, 91.0 percent by weight (wt. %) to 97.5 wt. % of magnesium (Mg), 2.0 wt. % to 4.0 wt. % of aluminium (Al), 0 wt. % to 0.1 wt. % of copper (Cu), 0 wt. % to 0.01 wt. % of iron (Fe), 0.01 wt. % to 2.0 wt. % of manganese (Mn), 0 wt. % to 0.01 wt. % of nickel (Ni), 0 wt. % to 0.5 wt. % of silicon (Si) and 0.3 wt. % to 2.0 wt. % of zinc (Zn).

Abstract: A coating composition for carbon steel includes a titanium dioxide hindered amine light stabilizer (TiO2-HALs) nanocomposite and an epoxy resin. The TiO2-HALs nanocomposite is present in the coating composition in an amount 1 to 10 wt. % based on the weight of the coating composition. The TiO2-HALs nanocomposite includes a homogenous distribution of TiO2 nanoparticles in a HALs matrix. A method of producing the coating includes synthesizing the TiO2/HALs nanocomposite, mixing the epoxy resin, and the TiO2/HALs nanocomposite for 6 to 10 h at a temperature of 25 to 75° C.

Abstract: A method of depositing a bimetallic alloy coating onto a bare stainless-steel bipolar plate includes preheating the bare stainless-steel bipolar plate to a temperature ranging from 450° C. to 500° C. Further, the method includes depositing copper (Cu) and nickel (Ni) onto the bare stainless-steel bipolar plate to form a coated stainless-steel bipolar plate. Furthermore, the method includes cooling the coated stainless-steel bipolar plate after terminating the depositing. The deposition is an aerosol assisted chemical vapor deposition of Cu and Ni from a solution containing a mixture of a copper (II) precursor and a nickel (II) precursor for 1 hour (h) to 3 h to form the coated stainless-steel bipolar plate having a coating including a CuNi film having a metal phase including Cu, Ni and CuNi.

Abstract: A biomedical implant system includes a substrate and a coating. The coating includes a first layer including titanium dioxide nanotubes and a second layer including a polyvinylidene fluoride polymer. The titanium dioxide nanotubes extend perpendicularly from a surface of the substrate and contain ciprofloxacin. The titanium dioxide nanotubes are capped on an outer end with the polyvinylidene fluoride polymer. A process for making the biomedical implant system includes anodizing the substrate, at a voltage of 20 V to 80 V for a time of 10 to 200 minutes, in a solution to form the first layer of the coating. The first layer of the coating is further dried, annealed, loaded with ciprofloxacin, and covered with the second layer of the coating.

Abstract: A method of reducing corrosion, including coating a surface of a substrate with a corrosion inhibitor and drying to form a coated substrate. The coated substrate when contacted with a corrosive medium has a charge transfer resistance (Rct) of at least 2,000 k?. The corrosion inhibitor includes a sol-gel and limestone. The sol-gel includes reacted units of aminopropyltriethoxysilane (APTES), tetraethyl orthosilicate (TEOS), dimethoxy-methyl-octadecylsilane (DMMOS), vinyltrimethoxysilane (VTMS), and zirconium(IV) propoxide.

Abstract: A method for enhancing adhesion of a curable epoxy resin composition to a metal article includes applying a sol-gel mixture on the surface of the metal article and aging to form a sol-gel layer on the metal article and subsequently, electrospraying the curable epoxy resin composition on the sol-gel layer of the metal article, and curing the curable epoxy resin composition by heating thereby forming a fusion-bonded epoxy (FBE) layer on the sol-gel layer. The sol-gel layer is between the surface of the metal article and the FBE layer, and has an average thickness of 10 to 100 micrometers (?m). The FBE layer has a thickness of 70 to 130 ?m.

Abstract: A method to form a metal matrix composite reinforced with eggshell (ES). The method includes preparing an ES powder, blending and milling the ES powder with at least one metal powder selected from the group consisting of magnesium (Mg), zirconium (Zr) to form a powder mixture, compacting and sintering the powder mixture to form the metal matrix composite. In addition, a Mg—Zr-ES metal matrix composite with improved corrosion resistance, having an amount of magnesium from 95 to 97 wt. %, an amount of zirconium from 1 to 2 wt. %, and an amount of ES from 1 to 4 wt. %, may be used for biomedical applications.

Abstract: A method to form a metal matrix composite reinforced with eggshell (ES). The method includes preparing an ES powder, blending and milling the ES powder with at least one metal powder selected from the group consisting of magnesium (Mg), zirconium (Zr) to form a powder mixture, compacting and sintering the powder mixture to form the metal matrix composite. In addition, a Mg—Zr-ES metal matrix composite with improved corrosion resistance, having an amount of magnesium from 95 to 97 wt. %, an amount of zirconium from 1 to 2 wt. %, and an amount of ES from 1 to 4 wt. %, may be used for biomedical applications.

Abstract: A method to form a metal matrix composite reinforced with eggshell (ES). The method includes preparing an ES powder, blending and milling the ES powder with at least one metal powder selected from the group consisting of magnesium (Mg), zirconium (Zr) to form a powder mixture, compacting and sintering the powder mixture to form the metal matrix composite. In addition, a Mg—Zr-ES metal matrix composite with improved corrosion resistance, having an amount of magnesium from 95 to 97 wt. %, an amount of zirconium from 1 to 2 wt. %, and an amount of ES from 1 to 4 wt. %, may be used for biomedical applications.

Abstract: A saltwater corrosion resistant composite coating is described. The coating includes at least one conductive polymer, chitosan, reduced graphene oxide (rGO), and a cured epoxy. The rGO and chitosan are dispersed in particles of the conductive polymer to form a 3D network. At least a portion of the chitosan is covalently bound to the rGO. At least a portion of the conductive polymer is covalently bound to the chitosan, and the 3D network is dispersed in the cured epoxy.