Baker Hughes, a Ge Compnay, LLC

Albert Sidney Dunn

Mary Jane Legaspi Felipe

David N Fulmer

Khac Truc Nguyen

Mary Jane Felipe

Montgomery A Pifer

Stephen J Wiacek

William Mansfield

William Watson

Timothy Ray Underwood

Chelsea Eaton

An additive comprising one or more C-Chydroxycarboxylic acids and/or one or more C-Chydroxycarboxylic acid salts may be added to an aqueous system having galvanized metallurgy or a carbon steel surface in an effective amount to passivate a galvanized coating on the metallurgy or to decrease white rust formation or other types of corrosion upon the galvanized metallurgy or carbon steel surface in an aqueous system. In a non-limiting embodiment, the C-Chydroxycarboxylic acid or the C-Chydroxycarboxylic acid salt additive may utilize the zinc in the galvanized coating to achieve passivation. The passivation may occur while the system is shut down or in service. The aqueous system may be or include a cooling tower, a cooling water system, and combinations thereof. The additive may be used with or in the absence of a phosphorous-containing compound.

Corrosion inhibitors for passivation of galvanized coatings and carbon steel

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Lake Charles, LA, United States of America

Albert Sidney Dunn