“…[113] A dense thin oxide with good outgassing properties can be formed on aluminum surfaces by: (1) machining under an dry chlorine-free argon/oxygen gas, (2) machining under pure anhydrous ethanol, or (3) extrusion under a dry chlorine-free argon/oxygen gas. [113] A dense thin oxide with good outgassing properties can be formed on aluminum surfaces by: (1) machining under an dry chlorine-free argon/oxygen gas, (2) machining under pure anhydrous ethanol, or (3) extrusion under a dry chlorine-free argon/oxygen gas.…”