Methods for electropolishing and coating aluminum on air and/or moisture sensitive substrates

Freiderich, John W.; Boyd, Tasha L.

Title: Methods for electropolishing and coating aluminum on air and/or moisture sensitive substrates

Patent · Tue Oct 04 00:00:00 EDT 2022

OSTI ID:1986648

Freiderich, John W.; Boyd, Tasha L.

Methods for electropolishing and coating aluminum on a surface of an air and/or moisture sensitive substrate, including: in a vessel, submerging the substrate in a first molten salt bath and applying an anodizing current to the substrate at a first temperature to electropolish the surface of the substrate; wherein the first molten salt bath includes one of a first organic salt bath and first inorganic salt bath; wherein, when used, the first organic salt bath includes one of (a) aluminum halide and ionic liquid, (b) a combination of an aluminum halide and halogenatedmethylphenylsulfone (C₆(H_5-y,X_y)SO₂CX₃, where y is a number from 0-5), (c) a combination of an aluminum halide, an ionic liquid, and halogenatedmethylphenylsulfone (C₆(H_5-y,X_y)SO₂CX₃), and (d) AlF₃-organofluoride-hydrofluoric acid adduct; wherein, when used, the first inorganic salt bath includes aluminum halide and alkali metal halide; and wherein the anodizing current is 10-30 mA/cm².

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Research Organization:: Oak Ridge Y-12 Plant (Y-12), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: NA0001942

Assignee:: Consolidated Nuclear Security, LLC (Oak Ridge, TN)

Patent Number(s):: 11,459,658

Application Number:: 17/379,395

OSTI ID:: 1986648

Resource Relation:: Patent File Date: 07/19/2021

Country of Publication:: United States

Language:: English

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