Anticorrosive magnesium phosphate coating on AZ31 magnesium alloy

Takahiro Ishizaki, Ichinori Shigematsu, Naobumi Saito

Research output: Contribution to journalArticle

68 Citations (Scopus)

Abstract

A novel anticorrosive film with a thickness of approximately 50 μm was successfully coated on an AZ31 magnesium alloy by chemical and low-heat treatments (50 °C). The film was a single-phase system of newberyite (MgHPO4•3H2O) having an orthorhombic crystal structure. The corrosion current density of the newberyite film coated on the AZ31 magnesium alloy decreased by more than two orders of magnitude as compared to that of the AZ31 magnesium alloy. The static water contact angle of the newberyite film was less than 10°. The average value of the scratch critical load for the newberyite coating was estimated to be approximately 15 mN.

Original languageEnglish
Pages (from-to)2288-2291
Number of pages4
JournalSurface and Coatings Technology
Volume203
Issue number16
DOIs
Publication statusPublished - 2009 May 30

Keywords

  • Coating
  • Corrosion
  • Magnesium alloys
  • Newberyite

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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