AL-MG BASED ALLOY MATERIAL EXCELLENT IN PHOSPHATING TREATMENT

摘要

PURPOSE: To provide a Al-Mg based alloy material excellent in filiform corrosion resistance (corrosion resistance post coating) after phosphating treatment by providing the Al-Mg based alloy material excellent in phosphating treatment used for a field such as a panel material for various vehicle such as automobile, an outside plate material for household electric goods and a building material which are used for coating after machining such as press forming and chemical treatment such as phosphating treatment. ;CONSTITUTION: When an oxide layer is formed on the base material surface of the Al-Mg based alloy thickness of the oxide layer is ≤70Å and Mg conc. in the oxide layer is ≤20 atom %.;COPYRIGHT: (C)1993,JPO&Japio