Effect of Si content on wettability of dual phase high strength steels by liquid Zn-0.23 wt.%Al

Yunkyum Kim, Joonho Lee, Joongchul Park, Sun Ho Jeon

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The wettability of dual phase steels by liquid Zn-0.23 wt.%Al at 450 °C (723 K) was investigated using the dispensed sessile drop method. Dual phase steels of six different Si contents (0 wt.%, 0.12 wt.%, 0.18 wt.%, 0.3 wt.%, 0.5 wt.%, and 1.0 wt.%) annealed in a 15 %H2-N2 gas atmosphere at a dew point of-60 °C (213 K) were examined. As the Si content increased from 0 wt.% to 0.5 wt.%, the wettability worsened. However, as the Si content increased to 1.0 wt.%, the wettability improved to be better than that of the 0.3 wt.%Si steel. Based on the surface oxide analysis results using SEM, FT-IR, and TEM analyses, the effect of the surface oxide type on the wettability is discussed. Although the morphology of the nanometer-sized surface oxides did not change, the surface oxides changed from MnO to Mn2SiO 4 to MnSiO3 and then to SiO2 as the Si content increased. After comparison of the present results with the wettability of pure oxides, it was concluded that the coating property of the dual phase high strength steel was more closely related to the type of surface oxide.

Original languageEnglish
Pages (from-to)607-611
Number of pages5
JournalMetals and Materials International
Volume17
Issue number4
DOIs
Publication statusPublished - 2011 Aug 1

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high strength steels
wettability
High strength steel
Oxides
Wetting
oxides
Steel
Liquids
liquids
steels
dew point
Gases
Transmission electron microscopy
coatings
atmospheres
Coatings
transmission electron microscopy
Scanning electron microscopy
scanning electron microscopy
gases

Keywords

  • galvanization
  • metals
  • surface oxides
  • transmission electron microscopy (TEM)
  • wetting

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Metals and Alloys
  • Mechanics of Materials
  • Materials Chemistry

Cite this

Effect of Si content on wettability of dual phase high strength steels by liquid Zn-0.23 wt.%Al. / Kim, Yunkyum; Lee, Joonho; Park, Joongchul; Jeon, Sun Ho.

In: Metals and Materials International, Vol. 17, No. 4, 01.08.2011, p. 607-611.

Research output: Contribution to journalArticle

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abstract = "The wettability of dual phase steels by liquid Zn-0.23 wt.{\%}Al at 450 °C (723 K) was investigated using the dispensed sessile drop method. Dual phase steels of six different Si contents (0 wt.{\%}, 0.12 wt.{\%}, 0.18 wt.{\%}, 0.3 wt.{\%}, 0.5 wt.{\%}, and 1.0 wt.{\%}) annealed in a 15 {\%}H2-N2 gas atmosphere at a dew point of-60 °C (213 K) were examined. As the Si content increased from 0 wt.{\%} to 0.5 wt.{\%}, the wettability worsened. However, as the Si content increased to 1.0 wt.{\%}, the wettability improved to be better than that of the 0.3 wt.{\%}Si steel. Based on the surface oxide analysis results using SEM, FT-IR, and TEM analyses, the effect of the surface oxide type on the wettability is discussed. Although the morphology of the nanometer-sized surface oxides did not change, the surface oxides changed from MnO to Mn2SiO 4 to MnSiO3 and then to SiO2 as the Si content increased. After comparison of the present results with the wettability of pure oxides, it was concluded that the coating property of the dual phase high strength steel was more closely related to the type of surface oxide.",
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AB - The wettability of dual phase steels by liquid Zn-0.23 wt.%Al at 450 °C (723 K) was investigated using the dispensed sessile drop method. Dual phase steels of six different Si contents (0 wt.%, 0.12 wt.%, 0.18 wt.%, 0.3 wt.%, 0.5 wt.%, and 1.0 wt.%) annealed in a 15 %H2-N2 gas atmosphere at a dew point of-60 °C (213 K) were examined. As the Si content increased from 0 wt.% to 0.5 wt.%, the wettability worsened. However, as the Si content increased to 1.0 wt.%, the wettability improved to be better than that of the 0.3 wt.%Si steel. Based on the surface oxide analysis results using SEM, FT-IR, and TEM analyses, the effect of the surface oxide type on the wettability is discussed. Although the morphology of the nanometer-sized surface oxides did not change, the surface oxides changed from MnO to Mn2SiO 4 to MnSiO3 and then to SiO2 as the Si content increased. After comparison of the present results with the wettability of pure oxides, it was concluded that the coating property of the dual phase high strength steel was more closely related to the type of surface oxide.

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