Effect of Corrosion Resistant Coatings on the Fatigue Strength of Cast Magnesium Alloys

Abstract

A study was made for the Army Aviation Materiel Readiness Command to evaluate the effects of various surface treatments and corrosion resistant coating systems on the fatigue properties of three send cast magnesium alloys (AZ91-T6, ZE41-T5, and EZ33-T5) of current or potential use in helicopter component housings. This was part of a larger program undertaken by the Frankford Arsenal to provide significant reduction of costs and downtime associated with the corrosion degradation of these housings. Coatings evaluated were DOW 1 and DOW 7 chromate conversion coatings and the HAE and DOW 17 anodic coatings, both light and heavy applications. Pretreatments such as acid pickling, shot peening, and polystyrene impregnation were also evaluated as well as several different organic topcoats.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1977
Accession Number
ADA046825

Entities

People

  • James J. Bethke

Organizations

  • Naval Air Warfare Center Warminster

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Aircrafts
  • Aluminum Alloys
  • Anodic Coatings
  • Chemistry
  • Coatings
  • Corrosion Resistance
  • Fabrication
  • Fatigue Tests (Mechanics)
  • Helicopters
  • High Humidity
  • Magnesium Alloys
  • Materials
  • Shot Peening
  • Substrates
  • Surface Finishing
  • Surface Roughness
  • Test And Evaluation

Fields of Study

  • Materials science

Readers

  • Aerospace Test and Evaluation
  • Structural Health Monitoring of Composite Structures.
  • Surface Coatings Technology.