The influence of the dew point on the wettability of twinning-induced-plasticity steels by liquid Zn-0.23-wt% Al

Yunkyum Kim, Kwang Soo Shin, Sun Ho Jeon, Kwang Geun Chin, Joonho Lee

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The influence of the dew point on the wettability of the 17-wt% Mn twinning-induced-plasticity steels by liquid Zn-0.23-wt% Al alloy was investigated. Samples annealed at dew points≥-20°C exhibited a higher contact angle which did not change with time and a poor coating quality during hot-dipping galvanizing. Samples annealed at dew points dew points≤-40°C showed a relatively lower contact angle, leading to complete coating during hot-dip trials. The drastic change in the wetting behavior was explained by the selective oxidation on the surface (from a thick MnO layer to a relatively thin MnAl2O4 layer as dew point decreased).

Original languageEnglish
Pages (from-to)364-371
Number of pages8
JournalCorrosion Science
Volume85
DOIs
Publication statusPublished - 2014 Aug

Keywords

  • A. Steel
  • A. Zinc
  • B. TEM
  • C. Interface
  • C. Segregation
  • C. Selective oxidation

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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