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Intergranular corrosion (IGC) and intergranular stress corrosion cracking (IGSCC) resistance improvement method for metallic alloys

  • US 9,079,211 B1
  • Filed: 04/07/2014
  • Issued: 07/14/2015
  • Est. Priority Date: 12/31/2013
  • Status: Active Grant
First Claim
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1. A method comprising:

  • depletion of a β

    -phase precipitate forming magnesium containing material from one or more surface layers at and in a vicinity of one or more grain boundaries associated with a part or work piece;

    applying hydrophobic, electrically semi conductive/insulative, thermally insulative material coating to reduce a heat transfer property of the part or work piece with an effect of reducing diffusion of magnesium atoms at one or more said grain boundaries located beneath the part or work piece'"'"'s surface;

    providing coating layer(s) having nano capsules containing adhesive fluid which would seal or fill in grain boundary cracks that can arise in a part or work piece'"'"'s surface during its service life.

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