Corrosion resistance of nickel coatings deposited from low-temperature nickel-plating electrolytes

Corrosion properties of nickel coatings obtained from aqueous and nonaqueous electrolytes

“…Analysis of the obtained parameters showed that in the course of the experiments, the value of the charge transfer resistance R 1 varies nonmonotonously. This behavior can indicate the presence of activation‐passivation cycles in the corrosion process and is typically observed for such systems …”

“…This behavior can indicate the presence of activation-passivation cycles in the corrosion process and is typically observed for such systems. 32 Analysis of the XPS spectra in the binding energy range of Ni 2p ( Figure 6B) F ). Formation of nickel oxides is possible due to the surface oxidation by oxygen, and also during the decomposition of Ni (OH) 2 hydroxide either by chemical reaction 53 :…”

“…Other researchers have found the initial film to be a thin layer of NiO· n H 2 O, which is later transformed into Ni (OH) 2 or β‐NiOOH . It can be concluded that the presence of specific anions, especially chloride ions, destroys passivity and leads to local corrosion attack …”

“…31 It can be concluded that the presence of specific anions, especially chloride ions, destroys passivity and leads to local corrosion attack. 32,33 Nickel coatings are quite stable in alkaline media but are easily dissolved in most acids, and many ions, for example, chloride or fluoride, cause rapid deterioration of the metal surface. For this reason, chloride-containing media are widely used to study corrosion processes.…”

Electrodeposition of Graphene Oxide Modified Composite Coatings Based on Nickel-Chromium Alloy

“…The deposition of composite electrochemical coatings (CECs) is a reliable and economically feasible method for modifying metal surfaces in order to impart new functional properties to them [1][2][3]. Among the CECs, coatings based on nickel [4][5][6][7][8][9][10][11][12] and its alloys [13][14][15][16][17][18][19][20][21][22] have become widespread, which is due to the ability of nickel to form electrolytic deposits with dispersed particles of different nature which have good adhesion to the metal base [4]. It should be noted that the electrochemical deposition of alloys is one of the special cases of parallel electrode reactions with their significant mutual influence.…”