A study on the electrochemical deoxidation using ZrO2 based solid electrolyte and a periodic DC voltage

Wook Kim, Dong Joon Min

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

An electrochemical deoxidation using a ZrO2 based solid electrolyte was investigated to control the interfacial oxygen concentration between the molten steel and ZrO2. The electrochemical deoxidation cell consisted of an MgO stabilized ZrO2 and an external power supply. In a previous study with constant external DC voltage, the oxygen concentration at the interface between the solid electrolyte and the molten steel was decreased to 2.2 ppm, which was the limit caused by the cathodic over-potential when a constant external DC voltage was applied. In the present study, a novel process of using a periodic or cyclic voltage for the electrochemical deoxidation cell was developed, to surpass this limitation caused by the over-optential of the electrochemical cell and thus decreasing the oxygen concentration to sub-ppm levels at the interface between the molten Fe and the solid electrolyte.

Original languageEnglish
Pages (from-to)195-201
Number of pages7
JournalSteel Research International
Volume82
Issue number3
DOIs
Publication statusPublished - 2011 Mar 1

Fingerprint

Electrochemical cells
electrochemical cells
Solid electrolytes
solid electrolytes
Molten materials
direct current
Steel
Oxygen
Electric potential
electric potential
oxygen
steels
power supplies

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

Cite this

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abstract = "An electrochemical deoxidation using a ZrO2 based solid electrolyte was investigated to control the interfacial oxygen concentration between the molten steel and ZrO2. The electrochemical deoxidation cell consisted of an MgO stabilized ZrO2 and an external power supply. In a previous study with constant external DC voltage, the oxygen concentration at the interface between the solid electrolyte and the molten steel was decreased to 2.2 ppm, which was the limit caused by the cathodic over-potential when a constant external DC voltage was applied. In the present study, a novel process of using a periodic or cyclic voltage for the electrochemical deoxidation cell was developed, to surpass this limitation caused by the over-optential of the electrochemical cell and thus decreasing the oxygen concentration to sub-ppm levels at the interface between the molten Fe and the solid electrolyte.",
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A study on the electrochemical deoxidation using ZrO2 based solid electrolyte and a periodic DC voltage. / Kim, Wook; Min, Dong Joon.

In: Steel Research International, Vol. 82, No. 3, 01.03.2011, p. 195-201.

Research output: Contribution to journalArticle

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