Galvanic Corrosion of Tungsten Coupled With Several Metals/Alloys

Abstract

From an environment perspective, tungsten is a more desirable material than depleted uranium (DU) for penetrator applications. However, the ballistic performance attained by current tungsten (W) alloys is inferior to DU. Recently, advanced tungsten-metal (W-M) composites have been developed to improve their ballistic penetration, but the corrosion properties are unknown and need to be determined. In this work, the galvanic corrosion behavior of W coupled with several selected metals/alloys was investigated. Electrochemical potentiodynamic polarizations and galvanic couplings were employed. The testing was conducted in a 1 wt-% sodium sulfate solution. The selected metals/alloys were: pure W, pure titanium (Ti), Ti 6Al-4V (Ti-6-4), hafnium (Hf), 36Ni64FeO.03C (Invar), pure iron (Fe), and brass (CDA 260). The galvanic corrosion of these couples is examined and discussed based on the results from electrochemical tests and visual observations.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1998
Accession Number
ADA358781

Entities

People

  • F. C. Chang
  • J. H. Beatty
  • Jared Beck
  • M. J. Kane

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Alloys
  • Composite Materials
  • Corrosion
  • Current Density
  • Department Of Defense
  • Elements
  • Galvanic Corrosion
  • High Density
  • Materials
  • Mechanical Properties
  • Metals
  • Military Research
  • Polarization
  • Potential Theory
  • Silicon Carbide
  • Tungsten
  • Tungsten Alloys

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.
  • Surface Engineering/Surface Coating Technology.