Effect of MgO on the viscous behavior of CaO-SiO2- Al2O3-MgO welding flux system

Hyuk Kim, Eun Jin Jung, Young Duck Jeon, Dong Joon Min

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The viscosities of CaO-SiO2- Al2O3-MgO flux were measured under the condition of CaO/SiO2 = 1.0-1.3 and 5.0 wt%MgO. Submerged arc welding flux with 5 wt%Al2O3 content had the lowest critical temperature and widest solid-liquid coexisting region at about 5 wt%MgO. It indicateds that both critical temperature and viscosity depend on the kind of primary phase of molten flux. Viscous behavior of the molten flux at 1773 K was analyzed in the view of silicate structure changed by FT-IR spectroscopy. Based on the critical temperature and the behavior of viscosity at a fixed temperature, it could be proposed that the contents of MgO and Al2O3 in SAW flux show a ronounced effect on preventing contamination in maintaining the liquid phase flux after welding process.

Original languageEnglish
Pages (from-to)114-120
Number of pages7
JournalJournal of Korean Institute of Metals and Materials
Volume47
Issue number2
Publication statusPublished - 2009 Feb 1

Fingerprint

SiO2
Welding
Fluxes
Critical Temperature
Viscosity
Molten materials
Liquid
Submerged arc welding
Silicates
Temperature
Liquids
Contamination
Spectroscopy
Infrared spectroscopy
Arc of a curve

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Modelling and Simulation
  • Surfaces, Coatings and Films
  • Metals and Alloys

Cite this

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title = "Effect of MgO on the viscous behavior of CaO-SiO2- Al2O3-MgO welding flux system",
abstract = "The viscosities of CaO-SiO2- Al2O3-MgO flux were measured under the condition of CaO/SiO2 = 1.0-1.3 and 5.0 wt{\%}MgO. Submerged arc welding flux with 5 wt{\%}Al2O3 content had the lowest critical temperature and widest solid-liquid coexisting region at about 5 wt{\%}MgO. It indicateds that both critical temperature and viscosity depend on the kind of primary phase of molten flux. Viscous behavior of the molten flux at 1773 K was analyzed in the view of silicate structure changed by FT-IR spectroscopy. Based on the critical temperature and the behavior of viscosity at a fixed temperature, it could be proposed that the contents of MgO and Al2O3 in SAW flux show a ronounced effect on preventing contamination in maintaining the liquid phase flux after welding process.",
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Effect of MgO on the viscous behavior of CaO-SiO2- Al2O3-MgO welding flux system. / Kim, Hyuk; Jung, Eun Jin; Jeon, Young Duck; Min, Dong Joon.

In: Journal of Korean Institute of Metals and Materials, Vol. 47, No. 2, 01.02.2009, p. 114-120.

Research output: Contribution to journalArticle

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T1 - Effect of MgO on the viscous behavior of CaO-SiO2- Al2O3-MgO welding flux system

AU - Kim, Hyuk

AU - Jung, Eun Jin

AU - Jeon, Young Duck

AU - Min, Dong Joon

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AB - The viscosities of CaO-SiO2- Al2O3-MgO flux were measured under the condition of CaO/SiO2 = 1.0-1.3 and 5.0 wt%MgO. Submerged arc welding flux with 5 wt%Al2O3 content had the lowest critical temperature and widest solid-liquid coexisting region at about 5 wt%MgO. It indicateds that both critical temperature and viscosity depend on the kind of primary phase of molten flux. Viscous behavior of the molten flux at 1773 K was analyzed in the view of silicate structure changed by FT-IR spectroscopy. Based on the critical temperature and the behavior of viscosity at a fixed temperature, it could be proposed that the contents of MgO and Al2O3 in SAW flux show a ronounced effect on preventing contamination in maintaining the liquid phase flux after welding process.

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