Effect of Ni as a minority alloying element on the corrosion behavior in Al-Cu-Mg-(Ni) metallic glasses


Aburada T., Unlu N. , Fitz-Gerald J. M. , Shiflet G. J. , Scully J. R.

SCRIPTA MATERIALIA, vol.58, no.8, pp.623-626, 2008 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 58 Issue: 8
  • Publication Date: 2008
  • Doi Number: 10.1016/j.scriptamat.2007.11.041
  • Title of Journal : SCRIPTA MATERIALIA
  • Page Numbers: pp.623-626

Abstract

The role of Ni in pitting corrosion in a NaCl solution was investigated by comparing near-eutectic amorphous Al-Cu-Mg alloys with and without Ni. The pitting resistance was enhanced significantly by a small Ni addition in both the amorphous and devitrified states. The minority Ni alloying element is beneficial to pitting resistance in addition to enhancing structural and chemical homogeneity by promoting glass formability. Ni is argued to be superior to Cu for improving the pitting resistance of Al. (C) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.