The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 05, 2016
Filed:
Oct. 22, 2012
Nei Corporation, Piscataway, NJ (US);
Gaurang Bhargava, Monmouth Junction, NJ (US);
Fred M. Allen, Princeton Junction, NJ (US);
Ganesh Skandan, Easton, PA (US);
Peter Hornish, Stewartsville, NJ (US);
Mohit Jain, East Brunswick, NJ (US);
NEI Corporation, Piscataway, NJ (US);
Abstract
A chromate-free, self-healing conversion coating solution for magnesium alloy substrates, composed of 10-20 wt. % Mg(NO)HO, 1-5 wt. % Al(NO)HO, and less than 1 wt. % of [VO]or VOdissolved in water. The corrosion resistance offered by the resulting coating is in several hundreds of hours in salt-spray testing. This prolonged corrosion protection is attributed to the creation of a unique structure and morphology of the conversion coating that serves as a barrier coating with self-healing properties. Hydroxoaluminates form the backbone of the barrier protection offered while the magnesium hydroxide domains facilitate the 'slow release' of vanadium compounds as self-healing moieties to defect sites, thus providing active corrosion protection.