Skip to main navigation Skip to search Skip to main content

Application of electron microscopy to investigation of corrosion of Mg-Al alloys in various electrolyte solutions

  • Silesian University of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The Mg-Al alloys are the best-known and most commonly used magnesium alloys (especially AZ91 alloy). However, the AZ91 alloy offers insufficient corrosion resistance. Many investigations show that hydrogen is the main corrosive factor appearing during chemical reactions between magnesium and water in electrolyte solution. The main intermetallic phase in the AZ91 alloy is the Mg17Al12 (β phase), which is a hydrogen trap. During corrosion, magnesium hydride forms inside the β phase, and this phase is brittle fractured when the inner stress caused by hydrogen pressure and expansion stress due to the formation of magnesium hydride is higher than the fracture strength. We examined the corrosion behaviour of AZ91 and AE44 magnesium alloys in 0.1M Na2SO4 solution and 3.5% NaCl solution. We analysed two Mg-Al alloys in order to determine the various effects of hydrogen on these materials.

Original languageEnglish
Title of host publicationXV International Conference on Electron Microscopy
EditorsBeata Dubiel, Tomasz Moskalewicz
PublisherTrans Tech Publications Ltd.
Pages41-47
Number of pages7
ISBN (Print)9783038354680
DOIs
Publication statusPublished - 2015
Event15th International Conference on Electron Microscopy, EM 2014 - Krakow, Poland
Duration: 15 Sept 201418 Sept 2014

Publication series

NameSolid State Phenomena
Volume231
ISSN (Print)1012-0394
ISSN (Electronic)1662-9779

Conference

Conference15th International Conference on Electron Microscopy, EM 2014
Country/TerritoryPoland
CityKrakow
Period15/09/1418/09/14

Keywords

  • Corrosion
  • EBSD
  • Hydrogen
  • Hydrogen cracking
  • Mg-Al alloys

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • General Materials Science
  • Condensed Matter Physics

Fingerprint

Dive into the research topics of 'Application of electron microscopy to investigation of corrosion of Mg-Al alloys in various electrolyte solutions'. Together they form a unique fingerprint.

Cite this