Alcoa Inc.

Arconic Corporation

Paula L Kolek

Jean Ann Skiles

Albert L Askin

Verne Bergstrom

Larry F Wieserman

James E Bell

Robert J Speer

Clinton Zediak

Carroll D Davis

Lori A Barrage

Weizong Xu

John Keener

Craig Belnap

Yves Biehlmann

Grant Nintzel

Jay A Kahn

Susanne Marie Opalka

Daniel L Serafin

Robert E Bombalski

David H DeYoung

Roger W Kaufold

James M Marinelli

Patricia Stewart

Luis Fanor Vega

Joseph P Harenski

Michael A Easley

David J Roha

Nickolas C Kotow

Luis H Espinoza

Marlene A Thompson

Luis H Espinoza-Nava

Jorge A Ramos Cruz

Sally A Jankosky

James Bell

A methods, apparatus and compositions for producing colored, self-cleaning substrates by roll coating are provided. The roll coated, colored, self-cleaning substrates retain the predetermined color and a predetermined gloss of the colored coating, thereby facilitating their use in architectural applications. The roll coated, colored, self-cleaning substrates may be iridescent-free.

Self-cleaning substrates and methods for making the same

Apparatus suited for removing carbon dioxide from gases are disclosed. The apparatus may employ bodies having a photocatalytic film. Associated methods and compositions are also disclosed.

Surfaces and coatings for the removal of carbon dioxide

Self-cleaning aluminum alloy substrates and methods of making the same are disclosed. In one embodiment, a substrate is provided, the substrate including an aluminum alloy body, an anodic oxide zone having micropores within a surface of the aluminum alloy body, the anodic oxide zone being substantially impermeable to contaminants, and a photocatalytic film located on at least a portion of the anodic oxide zone, wherein the photocatalytic film comprises photocatalytically active semiconductor. In one embodiment, a method is provided, the method including the steps of forming an anodic oxide zone in at least a portion of an aluminum alloy base, forming a photocatalytic film, the photocatalytic film being located on the anodic oxide zone, and sealing the anodic oxide zone with a sealant, wherein, as sealed, the anodic oxide zone is substantially impermeable to contaminants.

Self cleaning aluminum alloy substrates

A method of producing aluminum castings which includes the steps of casting a molten alloy, contacting the surface of the molten alloy with a humidified atmosphere and solidifying the alloy. The method is particularly suited for aluminum-magnesium alloys such as AA 5XXX and 7XXX series alloys. In addition to reducing the thickness of the surface oxide layer formed during casting, the method also provides improved surface quality of cast products and reduces subsequent remedial re-work or scalping. An improved aluminum-magnesium cast alloy product is also disclosed.

Control of oxide growth on molten aluminum during casting using a high moisture atmosphere

An aluminum alloy article is cleaned to remove oxides and organic matter from a coatable surface, coated with a composition comprising an organic resin and a fluorine compound, and then heated to an elevated temperature to decompose the organic resin and at least a portion of the fluorine compound. After heating the coated surface is left with a protective oxyfluoride film that prevents blistering and hydrogen pickup and promotes hydrogen degassing from the article.

Protective fluoride coatings for aluminum alloy articles

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Tarentum, PA, United States of America

Paula L Kolek