The aluminum alloy and its production manner which for anodic oxidation treatment are used for the plasma central processing unit, as an aluminum alloy component, and the plasma central processing unit null alloy component which

摘要

PROBLEM TO BE SOLVED: To provide an aluminum alloy to be anodized which can present high durability, low staining properties and high productivity at the same time in a hot corrosive environment, and to provide an aluminum alloy member having an anodic oxide film.;SOLUTION: The aluminum alloy to be anodized comprises, by mass%, 0.1 to 2.0% Mg, 0.1 to 2.0% Si and 0.1 to 2.0% Mn as alloy contents, Fe, Cr and Cu each regulated to 0.03% or less, and the balance Al with unavoidable impurities. An alloy having more excellent durability is obtained by soaking an aluminum alloy ingot having the composition at a temperature higher than 550°C but 600°C or lower. The aluminum alloy member is obtained by forming an anodic oxide film on the surface of the alloy.;COPYRIGHT: (C)2008,JPO&INPIT