Abstract The bond coat has been developed on Inconel 625 substrate by using Electron Beam Physical Vapour deposition (EBPVD) method at different substrate temperatures (ie. 873K and 973K). Intended for this persistence, the composition of Ni-49.8Al-0.2Y bond coat pellet was prepared. Structural information, Roughness, Morphology of coating have been characterized by using X-Ray Diffraction (XRD), Atomic Force Microscopy (AFM), and Field Emission Scanning Electron Microscopy (FESEM) respectively. Finally, the Coefficient of Thermal Expansion (CTE) is measured by using Dilatometer. Observed that the crystallinity was increased from 29.43 nm to 37.33 nm with increasing the substrate temperature. Also verified peak expansion is decreasing due to increase in substrate temperature. The average roughness increases to 17%. Columnar structure is observed at higher substrate temperature (973K) of bond coat surface. The CTE of 973K substrate temperature coating has 1.27x10-5 K-1 at 1000oC which is increases 8% with the substrate (1.16x10-5 K-1 at 1000oC). This is accomplished due to addition of Yttrium to bond coat material. These coatings used in thermal barrier applications such as in gas turbines, jet engines, and power aircraft etc.

中文翻译：

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使用 EBPVD 制备的掺钇 NiAl 键合涂层衬底温度对 Inconel 625 的影响

摘要 采用电子束物理气相沉积（EBPVD）方法在不同的基材温度（即873K和973K）下在Inconel 625基材上开发了粘合涂层。为了这种持久性，制备了 Ni-49.8Al-0.2Y 粘合涂层颗粒的成分。涂层的结构信息、粗糙度、形态已分别使用 X 射线衍射 (XRD)、原子力显微镜 (AFM) 和场发射扫描电子显微镜 (FESEM) 进行表征。最后，使用膨胀计测量热膨胀系数 (CTE)。观察到随着衬底温度的升高，结晶度从 29.43 nm 增加到 37.33 nm。还验证了由于基板温度的增加，峰值膨胀正在减少。平均粗糙度增加到 17%。在粘合涂层表面的较高基材温度 (973K) 下观察到柱状结构。973K 基材温度涂层的 CTE 在 1000oC 时为 1.27x10-5 K-1，随基材增加 8%（1.16x10-5 K-1 在 1000oC 时）。这是由于将钇添加到粘合涂层材料中而实现的。这些涂层用于热障应用，例如燃气轮机、喷气发动机和动力飞机等。