Corrosion of 5456-H117 Aluminum in High Velocity Seawater.

Abstract

A study was undertaken to examine the corrosion behavior of 5456-H117 aluminum in high velocity seawater. Experimental data was obtained using a high velocity flow channel operated with natural seawater. The results show that both the rate and mode of corrosion are velocity-dependent. The corrosion rate was shown to increase significantly with increasing velocity. Morphological changes were observed as a function of velocity. The observed changes suggest that the basic mechanism for high velocity corrosion of 5456-H117 aluminum involves film disruption/removal leading to enhanced micropitting about intermetallic particles. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1978
Accession Number
ADA058814

Entities

People

  • G. A. Gehring Jr.

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acquisition
  • Aluminum
  • Aluminum Alloys
  • Body Weight
  • Boundary Layer
  • Chemistry
  • Corrosion
  • Data Acquisition
  • Diffusion
  • Impulse Water Turbines
  • Materials
  • Materials Science
  • Measurement
  • Metals
  • Oxide Films
  • Polarization
  • Steady State

Readers

  • Fluid Dynamics.
  • Materials Science and Engineering.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).