Protective coatings for mechanical aluminum-magnesium joints

D. Dzhurinskiy, V. Leshchinsky, E. Strumban, E. Maeva, R. G. Maev

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

AZ31 alloy is used as a lightweight material for structural application in the automobile and aircraft production. However, alloy AZ31 is known to have poor corrosion resistant due to high electrochemical activity. In this study, the possibility of improving the corrosion resistance by applying protective coatings deposited by the low pressure cold spray process was investigated. The relative performance of each cold sprayed corrosion preventive coatings was assessed in accordance with American Society for Testing and Materials standards. The data for the bare AZ31 alloy were initially obtained and used as a reference point to compare the corrosion protective performance of different preventive coatings. Electrochemical behaviour of each coating composition was analyzed after a given time period of the accelerated corrosion test. Microstructure and mechanical properties of the deposited preventive coatings are also discussed. The cold sprayed preventive coatings provide sufficient protection to substantially reduce the corrosion rate of alloy AZ31.

Original languageEnglish
Pages (from-to)740-746
Number of pages7
JournalSurface Engineering
Volume31
Issue number10
DOIs
Publication statusPublished - 1 Oct 2015
Externally publishedYes

Keywords

  • AZ31
  • Cold spray
  • Corrosion protection
  • Low pressure cold spray
  • Mechanical properties

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