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The EBSD characterizations down to 200 nm spatial resolution revealed that the forged Ni W alloy consisted of equiaxed grains with average grain size of about 30 μm, and exhibited a strong 111 texture maximum intensity of 5.49 due to the two forging process at about 1180 °C, as shown in Fig. 1 a and d.As a typical FCC crystal structure, there was a high density of deformation twins 3. Mechanism of Ni-W electrodeposition. According to Brenner classifications, nickel-tungsten alloys plating is conducted in the form of induced co-deposition [73].Tungsten and molybdenum ions could not be able to fully reduce in their aqueous solutions while they may be utterly reduced in the presence of iron group elements and electrodeposit in the form of alloy on the cathode surface. Abstract Contemporarily, Ni-W alloy-based coatings are being developed as an alternative to Cr-based coatings in high-temperature applications, rendering higher thermal stability, corrosion, and oxidation properties. Although a few research works have agreed that the Ni-W alloy coatings exhibit superior oxidation performance, the attempts to investigate the oxidation behavior and SEM images of Ni-W-CrN thin films prepared at different current densities a 2 A dm â2, b 2.5 A dm â2, c 3 A dm â2, d 3.5 A dm â2. Here, I 0 represents the preexponential factor, ÎG* is the critical nucleation free energy, k is the Boltzmann constant, and T is the temperature. Current density affects the nucleation free energy Nickel-tungsten Ni-W alloy coating was electrodeposited on the copper substrate by direct current voltammetry. The optimization of a free-ammonium bath for electrodeposition of Ni-W alloy coating was investigated. Experiments were focused on elucidating the effect of W concentration and operating conditions on the corrosion performance of the obtained Ni-W alloy coating. The trodeposited Ni-W-Cu alloy coatings. The concentrations of Ni and W in the deposited
Ni-W alloy coating are found to be about~ 77 at% and~ 23 at%, respectively, as shown in Fig. 1a. The Cu concentration