non-chromate conversion coating for magnesium based alloys and magnesium-based MMMC"s

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by
UMIST , Manchester
StatementM.A. Gonzalez-Nunez ; supervised by P. Skeldon.
ContributionsSkeldon, P., Corrosion and Protection Centre.
ID Numbers
Open LibraryOL17384997M

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The development of a conversion coating in a stannate bath on magnesium-based ZC71 alloy and on a metal matrix composite (MMC), comprising a ZC71 alloy matrix and 12 vol% SiC particles, has been studied using weight gain behaviour, measurements of corrosion potential, X-ray diffraction and microscopic by: The electrochemical reactions that occur on the surface of magnesium and its alloys are described below.

Anodic reaction causes the dissolution of Mg metal: Mg → Mg 2 + + 2 e − and/or Mg s + 2 OH − → Mg OH 2 s + 2 e −. Cathodic reaction generates H 2 gas: 2 H + + 2 e − → H 2 g. and/or 2 H 2 O + 2 e − → H 2 g + 2 OH −.

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The overall corrosion Cited by: 3. General Applications. The ability of magnesium based materials to degrade has led to a multitude of medical applications. With years of research, current studies are now focused on the biological-biomaterial interaction and the cellular mechanisms as to how the materials are biologically influenced by the dissolution of corrosion byproducts from the bulk of Cited by:.