Two different protective MCrAlY (NiCrAlY and NiCoCrAlY) coatings were obtained using the Atmospheric Plasma Spray (APS) method on the Inconel 718 substrate. It is aimed to inspect the rate of erosion and increase working life in last stage components of gas turbines, turbine blades and vanes. Because of the nature of exhaust, they are exposed the high temperature solid particle erosion. The High Temperature Solid Particle Erosion (HTSPE) test rig, which was specially designed and manufactured in accordance with the internationally accepted standard of ASTM G211–14, was used in the experiments. The experiments were conducted with three different air temperatures (room temperature, 300 C and 600 C), three different erosive particle impact angles (30, 60 and 90), constant particle impact velocity (∼97 m s⁻¹) and particle size (400 μm Al₂O₃). SEM images, XRD analysis, EDX mapping and EDX element analysis were used to characterize the coatings. The erosion resistance results were interpreted with respect to the porosity values, hardness and surface roughness measurements of the coatings in details. As a result of the experiments, MCrAlY coatings showed ductile material behaviour compatible with erosion wear, and the cobalt element added to the coating structure contributed positively to increasing erosion resistance.

使用大气等离子喷涂 (APS) 方法在 Inconel 718 基材上获得了两种不同的保护性 MCrAlY（NiCrAlY 和 NiCoCrAlY）涂层。它旨在检查燃气轮机、涡轮叶片和轮叶的末级部件的腐蚀率并延长其使用寿命。由于废气的性质，它们暴露在高温固体颗粒的侵蚀下。实验采用按照国际公认的ASTM G211-14标准专门设计和制造的高温固体颗粒侵蚀（HTSPE）试验台。实验在三种不同的空气温度（室温、300 摄氏度和 600 摄氏度）、三种不同的侵蚀性粒子撞击角（30、60 和 90 度）、恒定的粒子撞击速度（~97 ms ^-1）和颗粒大小（400 μ米的Al ₂ ö ₃）。SEM 图像、XRD 分析、EDX 映射和 EDX 元素分析用于表征涂层。根据涂层的孔隙率值、硬度和表面粗糙度测量值详细解释抗侵蚀性结果。实验结果表明，MCrAlY 涂层显示出与侵蚀磨损相容的韧性材料行为，并且添加到涂层结构中的钴元素对提高抗侵蚀性做出了积极贡献。