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Title: Corrosion prevention of magnesium surfaces via surface conversion treatments using ionic liquids

Patent ·
OSTI ID:1321863

A method for conversion coating a magnesium-containing surface, the method comprising contacting the magnesium-containing surface with an ionic liquid compound under conditions that result in decomposition of the ionic liquid compound to produce a conversion coated magnesium-containing surface having a substantially improved corrosion resistance relative to the magnesium-containing surface before said conversion coating. Also described are the resulting conversion-coated magnesium-containing surface, as well as mechanical components and devices containing the conversion-coated magnesium-containing surface.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
UT-BATTELLE, LLC (Oak Ridge, TN)
Patent Number(s):
9,435,033
Application Number:
14/044,248
OSTI ID:
1321863
Resource Relation:
Patent File Date: 2013 Oct 02
Country of Publication:
United States
Language:
English

References (16)

Ionic Liquid Treatments for Enhanced Corrosion Resistance of Magnesium-Based Substrates book October 2010
Conversion coatings of Mg-alloy AZ91D using trihexyl(tetradecyl) phosphonium bis(trifluoromethanesulfonyl)amide ionic liquid journal July 2012
Exploring corrosion protection of Mg via ionic liquid pretreatment journal January 2007
Potentiostatic Control of Ionic Liquid Surface Film Formation on ZE41 Magnesium Alloy journal April 2010
An Ionic Liquid Surface Treatment for Corrosion Protection of Magnesium Alloy AZ31 journal January 2006
New Insights into the Fundamental Chemical Nature of Ionic Liquid Film Formation on Magnesium Alloy Surfaces journal April 2009
Characterization of the Magnesium Alloy AZ31 Surface in the Ionic Liquid Trihexyl(tetradecyl)phosphonium Bis(trifluoromethanesulfonyl)amide journal January 2010
The effect of potential bias on the formation of ionic liquid generated surface films on Mg alloys journal February 2010
An Investigation of a Phosphinate-Based Ionic Liquid for Corrosion Protection of Magnesium Alloy AZ31 journal January 2007
Electrochemical reactivity of trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentyl)phosphinate ionic liquid on glassy carbon and AZ31 magnesium alloy journal June 2011
Ionic Liquids as Novel Lubricants and Additives for Diesel Engine Applications journal April 2009
Nanostructure and Composition of Tribo-Boundary Films Formed in Ionic Liquid Lubrication journal May 2011
Antiwear Performance and Mechanism of an Oil-Miscible Ionic Liquid as a Lubricant Additive journal February 2012
Tribological characteristics of aluminum alloys sliding against steel lubricated by ammonium and imidazolium ionic liquids journal June 2009
Synthesis and physical property characterisation of phosphonium ionic liquids based on P(O)2(OR)2 and P(O)2(R)2 anions with potential application for corrosion mitigation of magnesium alloys journal December 2008
Highly fluorinated phosphonium ionic liquids: novel media for the generation of superhydrophobic coatings journal January 2009