A Scanning Electron Microscope Study of the Corrosion of Sacrificial Hull Anodes under Simulated Ship Service Conditions.

Abstract

The behavior of ship hull sacrificial anode zinc was studied under simulated shipboard exposure conditions. The adherence and passivating tendencies of anodic corrosion products are discussed in relation to time and corrosion product layer thickness. The effects of velocity and time of dynamic exposure on zinc anode specimens pre-exposed statically are presented. The behavior of zinc corrosion products is related to laminar and turbulent regimes of electrolyte flow as well as ionic diffusion. The depassivating tendencies of zinc anode corrosion products are presented. The corrosion of an aluminum sacrificial anode is characterized, and the observed widespread pitting corrosion is hypothesized to be anti-intergranular in nature. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1976
Accession Number
ADA039345

Entities

People

  • Peter Warren Wright

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Aluminum Alloys
  • Boundary Layer
  • Calcium Compounds
  • Chemical Synthesis
  • Chemistry
  • Corrosion
  • Crystal Lattices
  • Crystal Structure
  • Electrochemical Reactions
  • Electron Microscopes
  • Fluid Dynamics
  • Materials
  • Microscopes
  • Scanning Electron Microscopes
  • Three Dimensional
  • Turbulent Flow
  • Two Dimensional

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Surface Engineering/Surface Coating Technology.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene