Thermal stability of surface modified Ni-Cr-alloys in molten FLiNaK salt (표면처리된 Ni-Cr계 합금의 FLiNaK 용융염 하에서의 고온 안정성)

Cho, Hyun (조현); Kwang-Hyun Bang (방광현); TAE-SUK LEE (이태석); BYEONG WOO LEE (이병우)

doi:10.6111/JKCGCT.2012.22.5.227

Thermal stability of surface modified Ni-Cr-alloys in molten FLiNaK salt

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2012, 22(5), pp.227-232
DOI : 10.6111/JKCGCT.2012.22.5.227
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering

Cho, Hyun ¹, Kwang-Hyun Bang ², TAE-SUK LEE ², BYEONG WOO LEE ²

¹부산대학교
²한국해양대학교

Accredited

ABSTRACT

Inconel 617 and Hastelloy X are the most promising candidate materials for the heat exchanger of next generation nuclear reactor. Surface coating and its effects on high temperature properties for the Inconel 617 and Hastelloy X under molten FLiNaK (LiF-NaF-KF) salt environment have been investigated. For TiAlN and Al2O3 overlay coatings, the two different PVD (physical vapor deposition) methods of an arc discharge and a sputtering were applied, respectively. A study for the thermal stability of the surface modified Ni-Cr alloy substrates has been conducted. To evaluate the corrosion mechanism of Ni-Cr alloys in the molten salt, a ruptured Inconel pipe used for the molten salt transportation has been analyzed. The thermal properties of morphological and structural properties each sample were characterized before and after heat-treatment at 600oC in molten FLiNaK salt. The results showed that the TiAlN and Al2O3 overlay coated specimens had the enhanced high temperature stability.

KEYWORDS

Inconel 617, Hastelloy X, FLiNaK salt, Coating, Thermal stability

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Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Thermal stability of surface modified Ni-Cr-alloys in molten FLiNaK salt

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* References for papers published after 2023 are currently being built.

Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Thermal stability of surface modified Ni-Cr-alloys in molten FLiNaK salt

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