4.7 Article

High-temperature corrosion behavior of Ni-16Mo-7Cr-4Fe superalloy containing yttrium in molten LiF-NaF-KF salt

Journal

JOURNAL OF NUCLEAR MATERIALS
Volume 464, Issue -, Pages 342-345

Publisher

ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnucmat.2015.05.007

Keywords

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Funding

  1. Program of International S&T Cooperation Grant [2014DFG60230]
  2. National Natural Science Foundation of China [51371189, 51371188]

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The corrosion tests of a Ni-16Mo-7Cr-4Fe superalloy containing various yttrium contents were performed in molten FLiNaK (LiF-NaF-KF: 46.5-11.5-42 mol%) salt at 850 degrees C for 620 h, with the goals of investigating the effects of yttrium on the corrosion resistance of Ni-16Mo-7Cr-4Fe alloy and understanding the corrosion mechanisms. The addition of an appropriate amount of yttrium promotes the formation of a Y-rich layer near the surface and inhibits the diffusion of the susceptive elements. (C) 2015 Elsevier B.V. All rights reserved.

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