In this research, the pack cementation method was employed to apply a uniform aluminide coating on a substrate of nickel-based superalloy. The obtained intermetallic coating was synthesized using a pack containing 18Al–80Al₂O₃–2NH₄Cl (wt.%) as the main deposition source, an inert filler, and an activator, respectively. The surface morphology and topography, cross-sectional microstructure, the elemental and phase composition, microhardness of the synthesized aluminide coating were studied using atomic force microscopy (AFM), optical microscopy (OM), scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), x-ray diffraction (XRD), and Vickers microhardness indenter as the characterization techniques. According to the 3D topography results, the average surface roughness of the Inconel-600 substrate was about 2.4460.239 nm compared to 43.5583.876 nm measured for the produced aluminide coating. Additionally, the synthesized coating consisted of NiAl and Ni₂Al₃ as major phases considering the XRD spectrum. It is also observed that the deposited aluminide coating had a three-layer structure including an outer layer, an inner layer, and a diffusion zone. The Vickers microhardness measurements indicated a significant increase in the microhardness of the substrate (from 185.615.8 Hv to 1130.442.5 Hv) after applying the aluminide coating. Moreover, the microstructural variations across the deposited aluminide coating led to different microhardness values obtained for each layer. The highest microhardness was observed in the coating diffusion zone, whereas the lowest value belonged to the outer layer.

在这项研究中，采用填充渗碳法在镍基高温合金基材上施加均匀的铝化物涂层。使用含有 18Al–80Al ₂ O ₃ –2NH ₄的包合成获得的金属间化合物涂层Cl (wt.%) 分别作为主要沉积源、惰性填料和活化剂。使用原子力显微镜（AFM）、光学显微镜（OM）、扫描电子显微镜（SEM）、能量色散光谱研究了合成铝化物涂层的表面形貌和形貌、横截面微观结构、元素和相组成、显微硬度(EDS)、X 射线衍射 (XRD) 和维氏显微硬度压头作为表征技术。根据 3D 形貌结果，Inconel-600 基材的平均表面粗糙度约为 2.4460.239 nm，而所生产的铝化物涂层的测量值为 43.5583.876 nm。此外，合成涂层由 NiAl 和 Ni ₂ Al ₃作为考虑 XRD 谱的主要相。还观察到沉积的铝化物涂层具有三层结构，包括外层、内层和扩散区。维氏显微硬度测量表明，在施加铝化物涂层后，基材的显微硬度显着增加（从 185.615.8 Hv 到 1130.442.5 Hv）。此外，沉积铝化物涂层的微观结构变化导致每层获得不同的显微硬度值。在涂层扩散区观察到最高的显微硬度，而最低值属于外层。