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In order to estimate the stress concentration of the rough Ni/Ni-W interface in the r Ni:Ni-W = 2.5:1, 4:1 and 10:1 specimens, two dimensional Ni/Ni-W bi-layered region with a length of 50 μm and thickness of about 7 μm was adopted, as shown in Fig. 1 e. There is a serration in the central interface and the corresponding length and height are 0.2 μm and 0.1 μm, respectively. The dominant texture of Ni-W alloys in 111 plane, commonly, is controlled by the preferential growth in the direction of 111 plane. The Ni-W diffraction peaks, compared with pure nickel diffraction pattern, shifted toward the lower 2θ values. According to JCPDS No. 65-2865, pure nickel peaks occur at 2θ = 44.4°, 51.8°, and 76.4°. The 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 The as-prepared and crack-free Ni-W coatings were etched in different etchants. Mostly the Ni-based etchants were chosen with different etching times as listed in Table 2 The numbers refer to electrodeposition duty cycles while the letters refer to the etching solution while the composition of the solutions are described using volume ratio. Ni is etched mostly with the combination of one or Ni-W alloys with a 2 2 0 or 1 1 1 preferred orientation growth and amorphous structure were prepared from a pyrophosphate bath using the electrodeposition method. Structure transformation can be the result of the bath temperature Tb and the concentration of sodium tungstate CW in the bath. Increasing the Tb and CW can change the crystal growth from 2 2 0 to 1 1 1. At a higher Tb The corrosion current density of the Ni-W/MWCNTs composite decreased
approximately 4 times from 16.6 to 4.6 μA·cm-2 in 3