Electrochemical behaviour and analysis of Zn and Zn–Ni alloy anti-corrosive coatings deposited from citrate baths

Abstract

Anticorrosive coatings are a useful approach for protecting steel structures/machinery against corrosion.

Experimental and DFT studies of carbon nanotubes covalently functionalized with an imidazole derivative for electrochemical stability and green corrosion inhibition as a barrier layer on the nickel alloy surface in a sulphuric acidic medium

“…The CNT non-bonding electrons were implicated in physisorption of the material on the nickel alloy surface and imidazole nitrogen free electrons were implicated in chemisorption on the nickel alloys. [42][43][44][45][46] Thus, an excellent corrosion barrier coating layer due to the strong physisorption on the alloy surface was created. The coating of functionalized materials also reduced the occurrence of hydrogen evolution.…”

“… 2 They suggested as well the occurrence of an increase in the corrosion inhibition efficiency with an increased weight percentage of the composite materials. Then, corrosion inhibition in a salt medium of the zinc–nickel (Zn–Ni) alloy coated with Zn-citrate was investigated by Khan et al 3 Furthermore, friction studies of the 5,50-dimethylhydantoin (DMH)-coated Zn–Ni alloy were carried out by An et al 4 They suggested the occurrence of an increase as well in friction efficiency with an increased concentration of additive. With a chromium–nickel (Cr–Ni) alloy protected by liquid polymer, corrosion of the pure Ni alloy at 700 °C resulting from the addition of sodium sulphate was investigated by YuasacaIchikawa et al 5–7 The results indicated that the effect of sodium sulphate decreased as phase transfer occurred at high temperature.…”

Ceria Particles as Efficient Dopant in the Electrodeposition of Zn-Co-CeO2 Composite Coatings with Enhanced Corrosion Resistance: The Effect of Current Density and Particle Concentration

“…A wide range of particles can be used in zinc composite coatings, such as TiO 2 [ 2 ], SiC [ 3 ], Al 2 O 3 [ 4 ], and ZrO 2 [ 5 ], aiming to enhance the durability, corrosion protection, or hardness of the metal matrix. Zn alloy composites are also considered for enhancing the performance of such coatings, as the alloying of Zn with metals such as Mn [ 6 , 7 ], Ni [ 8 , 9 ], Fe [ 8 , 10 ], or Co [ 11 , 12 ] showed to be a good strategy for providing improved corrosion protection of steel.…”

Cathodic behavior of the dealloyed Ni–Zn coating in sodium hydroxide solution

“…Alloys of nickel and zinc are of interest to researchers due to the fact that this material, having a number of useful properties, can be used not only as a catalyst in high-efficiency electrolysis cells for hydrogen production [1,2], but also as an anticorrosion coating for steel structures in mechanical engineering, aviation, etc. [3][4][5][6][7].…”