Accession Number:

ADA622630

Title:

Mitigation of Corrosion in 5xxx Series Al-Mg Alloys in Marine Environments: Grain Boundary Engineering and Cold Spray Coating Approaches

Descriptive Note:

Final rept. 1 Jan 2011-31 Dec 2013

Corporate Author:

WISCONSIN UNIV-MADISON DEPT OF MATERIALS SCIENCE AND ENGINEERING

Report Date:

2014-03-26

Pagination or Media Count:

71.0

Abstract:

Corrosion mitigation of 5xxx series was investigated using two distinct experimental approaches. The first method was applying thermal and mechanical treatments to aluminum alloy AA 5083 resulting in improvements in both the mechanical strength and corrosion resistance as measured with the nitric acid metal loss test NAMLT. The second approach was the deposition of AA5083 and pure zinc coatings to protect the underlying AA5083 substrate. Coatings were characterized qualitatively with scanning electron microscopy and quantitatively with hardness and adhesion testing. Corrosion behavior of coatings was studied using potentiodynamic scans, NAMLT and exposure in a salt-spray chamber.

Subject Categories:

  • Coatings, Colorants and Finishes
  • Properties of Metals and Alloys
  • Mechanics
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE