A Mild Chemical Etching Bath for Selective Removal of Intermetallic Inclusions from the Surface of Aluminum AA 2024-T3 Alloys

摘要

Several aluminum alloys contain intermetallic compounds that influence their corrosion behavior.In particular,AA 2024-T3 alloys have intermetallic inclusions that variously contain Al,Cu,Fe,Mn or Mg [ 1 ].These cause corrosion of AA 2024 by virtue of galvanic cells that arise because of compositional variations across the surface [2].