Metallic substrate treatment methods and articles comprising a phosphonate functionalized layer

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United States of America Patent

PATENT NO 12018380
APP PUB NO 20220145471A1
SERIAL NO

17433312

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Abstract

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Metallic substrate treatment methods and articles comprising a phosphonate functionalized layer are provided. The method comprises contacting a metallic substrate comprising at least one of aluminum and an aluminum alloy with a fluid to form a phosphonate functionalized layer on at least a region of the metallic substrate. The fluid comprises at least one of a phosphonate containing acid and a derivative thereof. At least one of the phosphonate containing acid and the derivative thereof comprises a pKa of a first acidic proton. The fluid comprises a pH at least 0.5 pH value greater than the pKa of the first acidic proton. The article comprises a metallic substrate comprising aluminum or an aluminum alloy and a phosphonate functionalized layer on at least a region of the metallic substrate.

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Patent Owner(s)

Patent OwnerAddress
HOWMET AEROSPACE INC201 ISABELLA ST PITTSBURGH PA 15212

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Giocondi, Jennifer L Pittsburgh, US 4 21
Menegazzo, Nicola Pittsburgh, US 6 9
Robare, Kevin M New Kensington, US 7 45
Scott, Ryan N Plum, US 3 0
Weiler, Kelly M Oakmont, US 3 1

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