Apparatus, compositions, and methods for stainless-coated steel reinforcement bar

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12234558
APP PUB NO 20230012077A1
SERIAL NO

17861129

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Abstract

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In some embodiments, a coating applied to steel reinforcement bar (e.g., steel rebar) that could considerably extend the lifetime of concrete structures by reducing steel rebar corrosion is disclosed. The coating includes a thin, passivating steel (e.g., stainless steel) layer that is applied to the outside of conventional steel rebar. The coating can be applied in-line through metal cold spray manufacturing, which is a high throughput coating technique that can be integrated into existing steel manufacturing plants. Furthermore, a novel, high performance ferritic steel with tailored resistance to corrosion from chlorides is described. The new ferritic steel is distinct from other commercial and experimental steels, and is better suited for coating low-cost steel structures like rebar. Multiple alloying elements including Cr, Al, and Si will each form protective oxides independently, increasing the total amount of protection and extending it over much wider ranges of pH and electrical potential.

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Patent Owner(s)

Patent OwnerAddress
ALLIUM ENGINEERING INC19 STERLING RD SUITE 2 NORTH BILLERICA MA 01862

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jepeal, Steven Salem, US 3 2
McAlpine, Samuel Durham, US 3 2

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