摘要:
An apparatus for electrical isolation of metallic hardware is provided and includes an item of hardware and an isolation sheet disposed in contact with the item of hardware. The isolation sheet includes first and second opposing sides at least one of which is anodized.
摘要:
A thermal management system for use in a vacuum is provided including a heat generation device and a heat dissipation device. An extruded first heat transfer panel is mounted to a surface of the heat generation device and an extruded second heat transfer panel is mounted to a surface of the heat dissipation device. The first and second heat transfer panels are positioned between the heat generation device and the heat dissipation device. A portion of the first heat transfer panel and a portion of the second heat transfer panel are interposed.
摘要:
A thermal management system for use in a vacuum is provided including a heat generation device and a heat dissipation device. A laser sintered first heat transfer panel is mounted to a surface of the heat generation device and a laser sintered second heat transfer panel is mounted to a surface of the heat dissipation device. The first and second heat transfer panels are positioned between the heat generation device and the heat dissipation device. A portion of the first heat transfer panel and a portion of the second heat transfer panel are interposed.
摘要:
An apparatus for electrical isolation of metallic hardware is provided and includes an item of hardware and an isolation sheet disposed in contact with the item of hardware. The isolation sheet includes first and second opposing sides at least one of which is anodized.
摘要:
A laminate suitable for vehicular applications includes at least two sheets of aluminum alloy and an adhesive layer between the sheets bonding them together. An oxide layer on surfaces of the sheets is treated with a phosphorous acid electrolyte, so that a coordination number of four predominates for the aluminum-oxygen-phosphorous bond. Equivalent bonding strengths in the laminates are obtained in substantially less time with phosphorous acid treatment compared with phosphoric acid treatment.
摘要:
Disclosed is a method of producing a functionalized layer and an aluminum hydroxide layer on an aluminum substrate, the aluminum hydroxide layer located between the substrate and the functionalized layer. The method comprises the steps of subjecting an aluminum substrate to a hydrothermal treatment in an aqueous solution having a pH in the range of 2 to 14 to form a layer of aluminum hydroxide on said substrate and thereafter treating said aluminum substrate with a phosphorus-containing acid selected from phosphinic and phosphonic acid to form a functionalized layer on said aluminum hydroxide layer, the functionalized layer comprised of the reaction product of said acid and the layer of aluminum hydroxide.
摘要:
An active material and method of making same are disclosed comprising a metal oxide/hydroxide surface having chemically bonded to reactive sites thereon, a layer of a perfluorinated organic material formed by reacting with the metal oxide/hydroxide a perfluorinated organic acid comprised of an acid group and a perfluorinated carbon-containing group. The bond to the metal oxide/hydroxide surface is formed by reaction of the acid group with the metal oxide/hydroxide surface, so that the perfluorinated carbon-containing group is oriented away from the metal oxide/hydroxide surface. The perfluorinated organic acid may be a perfluorinated phosphonic acid, a perfluorinated phosphinic acid, a perfluorinated carboxylic acid, or a mixture of two or more of the acids.
摘要:
Disclosed is a process for anodically oxidizing aluminum alloy surfaces as a pretreatment for structural adhesive bonds or laminates. The process is comprised of anodically oxidizing aluminum and its alloys in phosphorous acid containing electrolyte to form a porous film comprised of Al, O and P. This film provides a very effective substrate for adhesively bonding aluminum articles and laminates.
摘要:
A process is disclosed for treating the surface of a valve metal such as aluminum to form a two layer protective coating thereon using an anodizing bath consisting essentially of an aqueous solution having a concentration ranging from about 0.001 molar to a saturated solution of a monomeric phosphorus- containing compound selected from the class consisting of a 1-30 carbon water soluble phosphonic acid, a 1-30 carbon water soluble phosphinic acid, and mixtures thereof. The valve metal surface is anodized in the anodizing bath while maintaining a voltage selected from a range of from about 1 to about 400 volts until the current density falls to a level indicative of the fact that a nonporous valve oxide layer has been formed on the valve metal surface and a reaction product from the monomeric phosphonic/phosphinic acid compound is chemically bonded to the oxide layer.
摘要:
A process is disclosed for treating the surface of a valve metal such as aluminum to form a two layer protective coating thereon using an anodizing bath consisting essentially of an aqueous solution having a concentration ranging from about 0.001 molar to a saturated solution of a phosphorus-containing compound selected from the class consisting of a phosphorus acid ester and salts thereof. A non-porous barrier valve metal oxide layer is formed on a surface of the valve metal, and a functionalized layer comprised of a phosphate ester is formed on the oxide layer. The functionalized layer protects the oxide layer against chemical attack by the electrolyte during anodizing