The corrosion resistance of 12Kh18N10T steel in molten fluoride salts

1981 ◽  
Vol 16 (6) ◽  
pp. 503-505 ◽  
Author(s):  
V. B. Kirillov ◽  
V. I. Fedulov
Keyword(s):  
Corrosion Resistance ◽  
12Kh18n10t Steel ◽  
Molten Fluoride ◽  
Fluoride Salts

NICKELVAC N

Alloy Digest ◽  
1990 ◽  
Vol 39 (12) ◽  
Keyword(s):  
Solid Solution ◽  
Corrosion Resistance ◽  
Heat Treating ◽  
Vacuum Induction Melting ◽  
Induction Melting ◽  
Good Oxidation Resistance ◽  
Temperature Performance ◽  
Molten Fluoride ◽  
Fluoride Salts ◽  
Container Material

Abstract NICKEL VAC N was originally developed as a container material for molten fluoride salts. It is a moderate strength, solid solution strengthened alloy with good oxidation resistance to 1800 F. It has excellent resistance to fluoride salts in the range 1300-1600 F. It is produced by vacuum induction melting followed electroslag remelting. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-388. Producer or source: Teledyne Allvac.

scholarly journals Corrosion-Resistance for ZTA-Cr2O3 Sintered Bodies in Molten Fluoride Salts

1987 ◽  
Vol 95 (1106) ◽  
pp. 1023-1030
Author(s):  
Eiji KOGURE ◽  
Hiroyoshi HIRATSUKA ◽  
Chikara NOGUCHI ◽  
Toshiyuki MORI ◽  
Fumio NOGUCHI ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Molten Fluoride ◽  
Fluoride Salts

scholarly journals Analysis of Corrosion of Hastelloy-N, Alloy X750, SS316 and SS304 in Molten Salt High-Temperature Environment

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 543
Author(s):  
Ketan Kumar Sandhi ◽  
Jerzy Szpunar
Keyword(s):  
Weight Loss ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Molten Salt ◽  
Corrosion Damage ◽  
Nickel Superalloy ◽  
Triple Junctions ◽  
Salt Corrosion ◽  
Molten Fluoride ◽  
Stainless Steel 316

Nickel superalloy Hastelloy-N, alloy X-750, stainless steel 316 (SS316), and stainless steel 304 (SS304) are among the alloys used in the construction of molten salt reactor (MSR). These alloys were analyzed for their corrosion resistance behavior in molten fluoride salt, a coolant used in MSR reactors with 46.5% LiF+ 11.5% NaF+ 42% KF. The corrosion tests were run at 700 °C for 100 h under the Ar cover gas. After corrosion, significant weight loss was observed in the alloy X750. Weight loss registered in SS316 and SS304 was also high. However, Hastelloy-N gained weight after exposure to molten salt corrosion. This could be attributed to electrochemical plating of corrosion products from other alloys on Hastelloy-N surface. SEM–energy-dispersive X-ray spectroscopy (EDXS) scans of cross-section of alloys revealed maximum corrosion damage to the depth of 250 µm in X750, in contrast to only 20 µm on Hastelloy-N. XPS wide survey scans revealed the presence of Fe, Cr, and Ni elements on the surface of all corroded alloys. In addition, Cr clusters were formed at the triple junctions of grains, as confirmed by SEM–EBSD (Electron Back Scattered Diffraction) analysis. The order of corrosion resistance in FLiNaK environment was X750 < SS316 < SS304 < Hastelloy-N.

Interaction of Pipeline Materials with Molten Fluoride Salts

2007 ◽  
Vol 62 (12) ◽  
pp. 769-774
Author(s):  
Tomáš Šimo ◽  
Oldřich Matal ◽  
Lukáś Nesvadba ◽  
Vladimír Dvořák ◽  
Viktor Kanický ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Power Efficiency ◽  
Nuclear Reactor ◽  
Optical Emission ◽  
Theoretical Models ◽  
Emission Spectrometry ◽  
Experimental Investigations ◽  
Salt Melts ◽  
Molten Fluoride ◽  
Fluoride Salts

Molten fluoride salts are very promising carriers for the transport of large amounts of heat for example from a high temperature nuclear reactor to a plant which generates hydrogen by chemical processes or from a nuclear reactor to a heat exchanger being a part of the equipment needed to realize the Brayton cycle with a very high power efficiency. Therefore, in the framework of our project, experimental and theoretical investigations of the interactions of fluoride salts as heat carriers needed as high potential and structural materials for pipelines in order to transport heat at temperatures above 600◦C were started. Experimental investigations of Fe-based and Ni-based materials in molten fluoride salts at high temperatures and with different exposure times were performed. Two components salts (LiF-NaF and NaF-NaBF4) and three components salts (LiF-NaF-ZrF4 and LiF-NaF-RbF) were chosen in the experiments. The salt analysis was focussed on the content of metallic elements before and after the exposure of the samples to the salt melts. It was done by inductively coupled plasma-optical emission spectrometry (ICP-OES) and by titrimetric techniques. The thickness of the material zone affected by the salt melts, characterized by an enriched / reduced content of elements in comparison to the mean original content, and the material attacked zone, characterized by very tiny channels or chains of pores or pits formed preferably at grain boundaries, were the subject of the analysis performed by electron microscopy / microprobe techniques. Theoretical models for the transport of elements in the material samples exposed to salt melts using experimental data were also developed.

Metallic impurities induced corrosion of a Ni-26W-6Cr alloy in molten fluoride salts at 850 oC

2021 ◽  
Vol 178 ◽  
pp. 109079
Author(s):  
Hua Ai ◽  
Shulin Liu ◽  
Xiang-Xi Ye ◽  
Li Jiang ◽  
Bo Zhou ◽  
...  
Keyword(s):  
Molten Fluoride ◽  
Fluoride Salts ◽  
Metallic Impurities

Electrochemical Behavior of Dy(III) and Dy-Fe Alloys Preparation by Co-Reduction in Molten Fluoride Salts

2017 ◽  
Vol 164 (4) ◽  
pp. D263-D268 ◽  
Author(s):  
Yukang Shi ◽  
Xiaolong Liu ◽  
Yuan Gao ◽  
Chao Huang ◽  
Bing Li
Keyword(s):  
Electrochemical Behavior ◽  
Molten Fluoride ◽  
Fe Alloys ◽  
Co Reduction ◽  
Fluoride Salts
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