Aluminum and its alloys offer a wide range of properties that can be engineered for specific demands. Aluminum–zinc–magnesium alloys have a greater response to heat treatment than binary aluminum–zinc alloys, resulting in higher strengths. The additions of zinc and magnesium, however, decrease the corrosion resistance. Thus, the alloys (i.e., Al7075) must be protected against corrosion, most often by means of metallic coatings resistant to corrosion. For this purpose, titanium or nickel coatings are very often used [1]. One of the most effective ways to improve the corrosion resistance of materials is to cover their surfaces with composite coatings, which significantly increases the durability and improves the mechanical properties of metal structures [2]. Surface modification by applying coatings is used in manufacturing industries to enhance surface properties. Surface coatings protect the base material and produce cost savings with respect to component replacement, material degradation, and the service life of the coated components [3,4]. Modern technological developments in the field of engineering surfaces, in particular implemented in hybrid systems, being effective in the last dozen or so years, have created great opportunities in the field of the production applications of complex coatings, i.e., multi-layer, gradient, multi-component, as well as composite materials, and have various properties and microstructures. One of the main directions of surface engineering is the production of coatings adapted (functionally) to specific applications in various industries [5]. An example of a functional coating is the Cr₃C₂-NiCr composite coating, consisting of hard chromium carbide particles embedded in a soft Ni/Cr phase matrix. The thermal spraying of fine Cr₃C₂-NiCr often includes chemical degradation of the chromium carbides present in the feedstock powder. The Cr₃C₂-NiCr coatings are most often deposited by high-velocity oxygen spray (HVOF) and plasma spray (PS) methods [6,7]. Currently, use of the cold spray (CS) method is recommended. The cold spray method enables the deposition of coating layers with a microstructure containing the Cr₃C₂ carbide phase, which ensures better mechanical properties of the coating on metal substrates [8]. The cold spray method for the production of Cr₃C₂-NiCr coatings can greatly reduce negative effects, such as thermally induced phase reactions and the decomposition effects of fine Cr₃C₂-NiCr powders. Various methods are used to remove cermet coating defects, such as heat treatment, sealing, laser remelting, and others. The CS process is governed by the impact of high-velocity feedstock particles (5–50 µm in diameter) onto a substrate without melting. The particles cause ballistic impingement on a suitable substrate at speeds ranging between 300 and 1200 m s⁻¹. Hence, the bulk material properties are retained. However, it is challenging to achieve good adhesion strength. The adhesion strength depends on factors such as the cold spray process parameters, substrate conditions, coating/substrate interactions at the interface, and feedstock material properties. Cold spraying is a solid-state deposition process since the feedstock is not melted. However, the kinetic energy of the high-velocity particles leads to interfacial deformation as well as localized heat at the point of impact. The conversion of kinetic energy into deformation and heat results in mechanical interlocking as well as metallurgical bonding at the interface [9,10]. Conventional Cr₃C₂-NiCr coatings have been previously employed to apply carbide cermet coating onto industrial equipment due to its excellent resistance to wear, erosion, and thermal shock, as well as its high temperature stability. The properties of these coatings depend on certain primary factors, including the variety of deposition methods (parameters) and the microstructure of the coatings [11,12]. Furthermore, coatings containing chromium carbide particles (cermet coating), distributed in a nickel-chromium alloy matrix, i.e., Cr₃C₂-NiCr, are often used for corrosion and wear-resistant applications. The combination of the ceramic and metal phases means that a higher fracture strength can be achieved. The improvement in hardness is directly associated with higher particle velocities and increased densities of the Cr₃C₂-NiCr-based coatings deposited on the substrate at ambient temperatures. The corrosion resistance of the cermet coatings is also associated with the surface roughness: the higher the surface roughness, the higher the corrosion attack, due to the higher surface area [13]. Chromium carbides are easily combined with a softer metal phase to form composite cermet systems. In particular, Ni-Cr metal alloys are used to facilitate carbide deposition, while also improving the strength and ductility of cermet coatings [14,15]. In addition, the nickel-chromium binder improves erosion and corrosion resistance due to the higher percentage of chromium in the coating. However, Cr₃C₂-NiCr coatings are very sensitive to the deposition technique used and the appropriately selected spray parameters [16]. Cr₃C₂-NiCr system coatings can be used in corrosive environments at service temperatures up to 800 to 900 °C. Therefore, Cr₃C₂-NiCr coatings are frequently used as protective coatings for applications in corrosive environments at elevated temperatures. Recently, various attempts have been made to modify the structure of cermet coatings. One of these involved the use of laser processing to modify the surface structure of cermet coatings [17]. Laser remelting has a significant influence on the surface structure of cermet coatings. At the lowest speed (i.e., 600 mm/min), the flattest, most regular, and most compact cermet surface on an Al7075 substrate was obtained. Moreover, a cheap and effective method of modifying the surface structure of Cr₃C₂-NiCr coatings is heat treatment [18]. It transpired that heating cermet coatings at a temperature of 300 °C improves the surface structure, and thus significantly increases the mechanical and anti-corrosion properties of Cr₃C₂-5Ni20Cr/Al7075 coatings.