Hot corrosion behavior of ni-base superalloys in a lithium molten salt

Autor:	Sun-Suk Hong, Dae-Seung Kang, Han-Soo Lee, Jin-Mok Hur, Soo-Haeng Cho
Rok vydání:	2009
Předmět:	Materials science Metallurgy Non-blocking I/O Metals and Alloys Oxide chemistry.chemical_element Electrolyte Condensed Matter Physics Corrosion Superalloy chemistry.chemical_compound chemistry Mechanics of Materials Oxidizing agent Materials Chemistry Lithium Molten salt
Zdroj:	Metals and Materials International. 15:51-55
ISSN:	2005-4149 1598-9623
DOI:	10.1007/s12540-009-0051-6
Popis:	The electrolytic reduction of a spent oxide fuel involves the liberation of the oxygen in a molten LiCl electrolyte, which is a chemically aggressive environment that is too corrosive for typical structural materials. Accordingly, it is essential to choose the optimum material for the process equipments such as the electroreducer and the salt purification vessel in the pyrochemical process. In this study, the corrosion behaviors of superalloys N-1, N-2 and N-3 in a molten LiCl-Li2O salt under an oxidizing atmosphere were investigated at 650 °C for 72 h to 216 h. Superalloy N-1 showed the highest corrosion resistance among the examined alloys. The corrosion products of superalloys N-1 and N-2 were NiO, Cr2O3, and NiCr2O4, while NiO, Cr2O3, LiAl2Cr3O8 were identified as the corrosion products of superalloy N-3. For superalloy N-1, its outer corrosion layer was more continuous, dense and adherent compared to those of N-2 and N-3.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c83e7456c74cb18e2f81425b36f47f3d https://doi.org/10.1007/s12540-009-0051-6 Zobrazit plný text záznamu Full text from SpringerLink