USA As Represented by Secretary of the Navy

Craig Matzdorf

William C Nickerson

Michael John Kane

Michael Brindza

El Sayed S Arafat

James A Whitfield

William C Nickerson, Jr

James L Green, Iii

David L Gauntt

Stephen J Spadafora

Paul R Roser

Frank Pepe

Joshua Walles

Alan Grieve

Jeremy Mattison

Kaitlyn Thompson

James Green

Alexander Westbrook

A powdered alloy with a chemical composition of AlSi, where X is an amount of Si from 10 to 30 weight percent. More specifically, a powdered alloy with a chemical composition of AlSiSnIn, where X is an amount of Si from 10 to 30 weight percent, Y is an amount of Sn from 0.01 to 0.50 weight percent, and Z is an amount of In from 0.005 to 0.05 weight percent.

Embrittled aluminum alloys for powder manufacturing

A method of creating aluminum powder, the method comprising of blending and melting aluminum of a purity from about 99% to about 99.999% with an embrittling element or combination of embrittling elements selected from the group consisting of silicon in the amount of 1 to 30% by weight and germanium; mixing together the melted aluminum and embrittling elements such that an alloy is created; cooling the mixed alloy; cutting the cooled alloy into smaller pieces; crushing the cut pieces; and, pulverizing and milling the crushed pieces into particles with a size of less than 200 micrometers.

This invention is directed to a process of coating metal in a trivalent chromium conversion-electrolyte coating wherein the metal anode or cathode is subjected to a current density ranging up to about 3.0 amperes per square foot for a period ranging up to 60 minutes.

Electrolytic process for deposition of chemical conversion coatings

The invention comprises synergistic compositions of at least one metal polycarboxylate and lithium phosphate. The synergistic compositions are designed to be added to film-forming or other compositions to reduce the corrosion of various metal surfaces or substrates on which the synergistic compositions are applied.

Synergistic corrosion inhibitor compositions

Composition and process for preparing corrosion-resistant passive coatings on bulk-aluminum alloys and aluminum powder-pigments; said coatings derived from an acidic aqueous composition consisting essentially of potassium hexafluorozirconate, basic chromium sulfate and potassium tetrafluoroborate.

Passive coatings for bulk aluminum and powder pigments

The invention comprises synergistic compositions of at least two metal carboxylates as corrosion inhibitors based on polycarboxylate anions and a variety of different cations. The inhibitors are designed to be added to film forming or other compositions to reduce the corrosion of the metal substrate on which the synergistic compositions are applied.

Synergistic metal polycarboxylate corrosion inhibitors

This invention relates to sacrificial-metal pigments coated with an effective amount of at least one metal oxide or a combination of metal oxides such as a mixture of chromium and zirconium oxides, and the process for preparing said coated pigments and combination thereof with film-forming binders for coating metal substrates to inhibit corrosion. The coated sacrificial-metal pigments are electrically active to prevent corrosion of metal substrates that are more cathodic (electropositive) than the metal oxide coated metal pigments.

Oxide coated metal pigments and film-forming compositions

This invention relates to galvanic aluminum alloy powder-pigments coated with semi-conducting corrosion-inhibiting compositions and particularly to the process for preparing said coated powder-pigments for coating substrates to inhibit corrosion. The coated aluminum alloy powder-pigments are electrically active and prevent corrosion of metals which are more cathodic (electropositive) than the coated-aluminum alloy pigments.

Process of protecting metal substrates with corrosion-resistant compositions

This invention relates to galvanic aluminum alloy powder-pigments coated with semi-conducting corrosion inhibiting compositions and to the process for preparing said coated powder-pigments for coating metal substrates to inhibit corrosion. The coated aluminum alloy powder-pigments are electrically active and prevent corrosion of metals which are more cathodic (electropositive) than the coated aluminum alloy pigments.

Coated aluminum alloy pigments and corrosion-resistant coatings

This invention relates to sacrificial-metal pigments coated with an effective amount of at least one metal oxide or a combination of metal oxides such as a chromium-zirconium oxide, and the process for preparing said coated pigments and combination thereof with film-forming binders for coating metal substrates to inhibit corrosion. The coated sacrificial-metal pigments are electrically active to prevent corrosion of metal substrates that are more cathodic (electropositive) than the metal oxide coated metal pigments.

This invention relates to galvanic aluminum alloy powder-pigments coated with a semi-conducting corrosion inhibiting oxide and the process for preparing said coated powder-pigments in combination with film-forming binders for coating metal substrates to inhibit corrosion. The coated aluminum alloy powder-pigments are electrically active and prevent corrosion of metals which are more cathodic (electropositive) than the aluminum alloy pigments.

Aluminum alloy coated pigments and corrosion-resistant coatings

Chromate-free corrosion-inhibiting coating compositions comprising film-forming binders and galvanic aluminum alloy powders prepared in an oxygen (oxidizing), nitrogen (inert) or nitrogen-hydrogen (reducing) atmosphere having particle sizes ranging up to 100 microns. The aluminum alloy powders having the formula: aluminum-zinc-X (AlZnX) wherein X is an element selected from the group consisting of indium, gallium, tin and bismuth. Improvement in corrosion protection is obtained by the addition of chemical inhibitors such as an azole or talcite clay to the coating which further inhibits the self-corrosion of the aluminum alloy and extends the corrosion protection of the metal substrate being protected.

Active aluminum rich coatings

The invention relates to an oleaginous mildew and corrosion-inhibiting composition, and the use of said composition to protect metal from corrosion and mildew. The composition comprises, in parts by weight, from about 20 to 60 parts of an oleaginous material such as a lubricating oil, 10 to 40 parts of organic solvent, 20 to 60 parts of corrosion-inhibitor consisting of a sulfonic acid-carboxylic acid metal complex or a mixture of said metal complex with a small but effective amount of an oil soluble alkyl phosphate, from 0.1 to 2.0 parts of an oil soluble antioxidant, from 0.0 to 5.0 parts of a water-displacing compound, an effective amount of a mildew-inhibiting compound, and from 0.0 to 1.0 part of a heterocyclic metal deactivator.

Oleaginous corrosion and mildew-inhibiting composition

This invention comprises an acidic aqueous solution for treating metal substrates to improve the adhesion bonding and corrosion protection of the metal surface which comprises effective amounts of water soluble trivalent chromium compounds, fluorozirconates, effective amounts of at least one corrosion inhibitors such as benzotriazole, fluorometallic compounds, zinc compounds, thickeners, surfactants, and at least about 0.001 mole per liter of the acidic solution of a polyhydroxy and/or carboxylic compound as a stabilizing agent for the aqueous solution.

Composition and process for preparing protective coatings on metal substrates

This invention comprises a composition and the process of using the composition for removing and preventing mold, mildew, and fungal growth. The composition comprises at least one alkali metal perborate, at least one inhibiting compound selected from the group consisting of alkali metal silicates, triazoles and mixtures thereof in any ratio, at least one corrosion inhibitor, and effective amounts of surfactant.

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California, MD, United States of America

Craig Matzdorf