Molten salt reactors represent a promising advancement in nuclear technology due to their potential for enhanced safety, higher efficiency, and reduced nuclear waste. However, the development of structural materials that can survive under severe corrosion environments is crucial. In the present work, pure Ni was deposited on the surface of 316H stainless steel using a directed energy deposition (DED) process. This study aimed to fabricate pure Ni alloy layers on an STS316H alloy substrate. It was observed that low laser power during the deposition of pure Ni on the STS316H substrate could induce stacking defects such as surface irregularities and internal voids, which were confirmed through photographic and SEM analyses. Additionally, the diffusion of Fe and Cr elements from the STS316H substrate into the Ni layers was observed to decrease with increasing Ni deposition height. Analysis of the composition of Cr and Fe components within the Ni deposition structures allows for the prediction of properties such as the corrosion resistance of Ni.

1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusion
Conflict of Interest Declaration
Author Information
Acknowledgement
References

• 고의준(국립한밭대학교 신소재공학과) | UiJun Ko (Department of Materials Science & Engineering, Hanbat National University, Daejeon 34158, Republic of Korea)
• 이원찬(국립한밭대학교 신소재공학과) | Won Chan Lee (Department of Materials Science & Engineering, Hanbat National University, Daejeon 34158, Republic of Korea)
• 신기승(한국원자력연구원 재료안전기술연구부) | Gi Seung Shin (Materials Safety Technology Research Division, Korea Atomic Energy Research Institute, Daejeon 34158, Republic of Korea)
• 윤지현(한국원자력연구원 재료안전기술연구부) | Ji-Hyun Yoon (Materials Safety Technology Research Division, Korea Atomic Energy Research Institute, Daejeon 34158, Republic of Korea)
• 김정한(국립한밭대학교 신소재공학과) | Jeoung Han Kim (Department of Materials Science & Engineering, Hanbat National University, Daejeon 34158, Republic of Korea) Corresponding author