Characterization and corrosion resistance of electrodeposited Ni–Mo–silicate platelet nanocomposite coatings

Electrodeposited Zinc-Nickel Nanocomposite Coatings

“…The coating of pattern B was formed under the same conditions as pattern A, but Mt nanoparticles were dispersed into the electrolyte solution and incorporated into the resulting coating. Since Mt nanoparticles do not give diffraction peaks upon exfoliation, no additional peaks were observed due to its presence [2,8,52,58,66,89]. The coating with Mt incorporation was thin as compared to the alloy coating without Mt but the γ-phase alloy was still formed even in the presence of Mt, confirming the Mt did not affect the deposition of the alloy phase of interest.…”

“…The resulting clay platelets range 1-2 nm in width with 100-1000 nm in length [66]. These platelets are easily incorporated into the coating during deposition, increasing the overall thermal stability and mechanical strength of the coating, which leads to increased corrosion resistance [2,8]. As the alloy coating is forming, the exfoliated clay in solution is freely dispersed throughout the electrolytic bath.…”

“…Exfoliated Mt, which has a plate-like structure, increases the surface area of the material when imbedded in the coating and leads to a more tortuous mean free path of the corrosion cells upon onset [5]. This technique has previously been successful with the incorporation of montmorillonite platelets into pure nickel, nickel-molybdenum and nickel-copper coatings [2,5,8,9,52,58,66]. However, many traditional particles used in composite coatings are spherical in shape.…”

“…Metal matrix composite (MMC) coatings are promising materials developed by inclusion of a dispersed reinforcing material into a metal matrix. MMC's can replace traditional materials through their ability to offer improved mechanical and physical properties such as increased hardness, wear resistance, low thermal expansion coefficients, lubrication properties, antibacterial properties and improved corrosion resistance [1][2][3][4][5][6][7][8][9][10][11]. Nanosized particle incorporation 2 A/dm 2 , 23 ± 2°C Ultrasonication and solution stirring during deposition.…”

Electrochemical Synthesis of Rare Earth Ceramic Oxide Coatings

“…Typically, the redox potential for the rare earth oxides is not readily accessible in aqueous solutions, making synthesis difficult. But electrochemical deposition offers several advantages including low processing temperature, control of the driving force, and deposition onto various shapes [29][30][31]. This chapter covers the electrochemical deposition (not electrophoretic or soaking methods) of rare earth oxides as films for various applications.…”