journal article·2020-07

Effect of the grain size of YSZ ceramic materials on corrosion resistance in a hot molten salt CaCl2-CaF2-CaO system

Wan-Bae Kim, Suk-Cheol Kwon, Soo-Haeng Cho, Jong-Hyeon Lee

Corrosion Science· Volume 170
Publisher page

Abstract

Abstract The hot corrosion behaviour of YSZ specimens sintered at 1500 °C (6 and 11 h) and 1600 °C (11 h) was evaluated in CaCl2-CaF2-CaO molten salt at 1150 °C. YSZ sintered at 1600 °C for 11 h exhibited the lowest corrosion, whereas YSZ sintered at 1500 °C for 6 h showed the most corrosion, with a grain size dependency. XRD analysis showed that all YSZ contained mainly CaZrO3 with a small t-ZrO2 peak. To use SOM anodes for the electrowinning of various metals, the corrosion resistance of YSZ can be improved by adjusting the grain size instead of adding stabilizers.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Molten salt chemistry and electrochemical processes · Advancements in Solid Oxide Fuel Cells · Metallurgical Processes and Thermodynamics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (36)

Show source-provided references
1. Primary magnesium production costs for automotive applications10.1007/s11837-008-0151-7 ↗
2. Calciothermic reduction of TiO2 and in situ electrolysis of CaO in the molten CaCl210.1016/j.jpcs.2004.06.041 ↗
3. Advances in titanium production
4. Rare earth, titanium group metals, and reactive metals production10.1016/B978-0-08-096988-6.00019-5 ↗
5. High-temperature stability of YSZ and MSZ ceramic materials in CaF2–MgF2–MgO molten salt system10.1111/jace.15377 ↗
6. A comparative study on ionic conductivity of Sr and Mg stabilized zirconia by impedance spectroscopy10.1016/j.jeurceramsoc.2005.03.104 ↗
7. Intermediate temperature solid oxide fuel cells10.1039/b612060c ↗
8. Magnesia stabilized zirconia doped with boron, ceria and gadolinia10.1016/j.ceramint.2012.01.035 ↗
9. Study on electrolytic reduction with controlled oxygen flow for iron from molten oxide slag containing FeO10.2298/JMMB120112036G ↗
10. High-temperature stability of CSZ, YSZ, and MSZ ceramic materials in CaCl2-CaF2-CaO molten salt system10.1016/j.jallcom.2018.09.001 ↗
11. A direct electrochemical route from oxides to Ti-Si intermetallics10.1016/j.electacta.2010.04.032 ↗
12. Direct selective extraction of titanium silicide Ti5Si3 from multi-component Ti-bearing compounds in molten salt by an electrochemical process10.1016/j.electacta.2011.07.026 ↗
13. Direct production of TiAl3 from Ti/Al-containing oxides precursors by solid oxide membrane (SOM) process10.1016/j.jallcom.2017.08.213 ↗
14. The use of solid-oxide-membrane technology for electrometallurgy10.1007/s11837-007-0064-x ↗
15. Solid oxide membrane process for magnesium production directly from magnesium oxide10.1007/s11663-005-0037-9 ↗
16. Green electrochemical process solid-oxide oxygen-ion-conducting membrane (SOM): direct extraction of Ti-Fe alloys from natural ilmenite10.1007/s11663-012-9633-7 ↗
17. Direct electrochemical preparation of CeNi5 and LaxCe1-xNi5 alloys from mixed oxides by SOM process10.1016/j.electacta.2010.01.008 ↗
18. Preparation of Ti-Fe based hydrogen storage alloy by SOM method10.1016/j.ijhydene.2010.04.098 ↗
19. Direct electrochemical reduction of titanium dioxide to titanium in molten calcium chloride10.1038/35030069 ↗
20. Emerging SOM technology for the green synthesis of metals from oxides10.1007/s11837-001-0053-4 ↗
21. Solid oxide membrane technology for environmentally sound production of titanium10.1179/174328508X290911 ↗
22. Electrochemical extraction of Ti5Si3 silicide from multicomponent Ti/Si-containing metal oxide compounds in molten salt10.1039/c3ta15039a ↗
23. A lower carbon footprint process for production of metals from their oxide sources10.1007/s11837-008-0017-z ↗
24. The electrochemical deoxidation of metal oxides by calcium using a solid oxide membrane10.1007/s11837-003-0177-9 ↗
25. Design of optimum solid oxide membrane electrolysis cells for metals production10.1016/j.pnsc.2015.11.004 ↗
26. Stability of yttria stabilized zirconia in molten oxy-fluorite flux for the production of silicon with the solid oxide membrane process10.1016/j.jeurceramsoc.2014.04.028 ↗
27. Yttria stabilized zirconia membrane stability in molten fluoride fluxes for low-carbon magnesium production by the SOM process10.2298/JMMB120809005M ↗
28. Searching for the stabilized zirconia exhibiting the best corrosion resistance in fluoride melts10.1007/BF00274456 ↗
29. Yttria-stabilized zirconia as membrane material for electrolytic deoxidation of CaO-CaCl2 melts10.1007/s10800-009-0025-x ↗
30. Determining yttria‐stabilized zirconia (YSZ) stability in molten oxy‐fluoride flux for the production of magnesium with the SOM process10.1111/jace.12449 ↗
31. Lattice parameters and density for Y2O3-stabilized ZrO210.1111/j.1151-2916.1986.tb04741.x ↗
32. Roine · 2006
33. Hot corrosion behavior of rare earth zirconates and yttria partially stabilized zirconia thermal barrier coatings10.1016/j.surfcoat.2010.04.044 ↗
34. Evaluation of hot corrosion behavior of plasma sprayed ceria and yttria stabilized zirconia thermal barrier coatings in the presence of Na2SO4 + V2O5 molten salt10.1016/j.ceramint.2012.05.047 ↗
35. Stability of yttria stabilized zirconia in molten oxy-fluorite flux for the production of silicon with the solid oxide membrane process10.1016/j.jeurceramsoc.2014.04.028 ↗
36. Lattice and grain boundary diffusion of Ca in polycrystalline yttria stabilized ZrO2 determined by employing SIMD technique10.1016/S0167-2738(98)00163-5 ↗