Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
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Model Cut-edge Formed on Zinc Coated Steels by Laser Machining and Its Corrosion Behavior

  • Sakairi, Masatoshi (Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University) ;
  • Kageyama, Akihiro (Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University) ;
  • Kikuhchi, Tatsuya (Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University)
  • Received : 2009.07.28
  • Accepted : 2010.02.20
  • Published : 2010.02.01
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Abstract

Laser machining technique, which is used focusing pulse YAG laser beam irradiation was applied to form area ratio controlled model cut-edge on pre painted Zn coated steels. A corrosion behavior of formed model cut-edge was investigated by rest potential measurement in 1 mol $m^{-3}$ NaCl with and without 0.5 kmol $m^{-3}$ $H_3BO_4$/0.05kmol$m^{-3}$ $Na_2B_4O_7$. The rest potential showed almost constant value with fluctuations. The amplitude of fluctuations increased with exposed area of steel surface. White corrosion products of zinc oxide and simonkollite was formed after the experiments at the formed model cut-edge.

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References

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