Electrochemical investigation of the effect of different laser surface treatments on Hastelloy G alloy

Toor I. H., Yilbas B. S., KARATAŞ C., Hussein M. A., Zafar M. N.

INTERNATIONAL JOURNAL OF MATERIALS RESEARCH, vol.104, no.10, pp.1007-1012, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 104 Issue: 10
  • Publication Date: 2013
  • Doi Number: 10.3139/146.110947
  • Journal Name: INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1007-1012
  • Hacettepe University Affiliated: Yes

Abstract

In the present study, the corrosion resistance behavior of untreated and laser treated Hastelloy was examined. The electrochemical tests including potentiodynamic polarization, Tafel analysis, and linear polarization resistance were carried out in deaerated 0.5 % NaCl aqueous solution at room temperature. Surface roughness was measured to correlate it with corrosion resistance properties of the materials. Surface morphology of the samples after corrosion tests was examined using scanning electron microscopy and energy dispersive X-ray spectroscopy. Results showed that laser treated surface exhibited better corrosion resistance properties as compared to untreated surface.