Metallographic Etching of Aluminum and its Alloys

Preparation of Aluminum Specimens

  • Grind with 240-grit SiC water-cooled paper, 240 rpm, 5 lbs. (20N) per specimen, until co-planar
  • Polish with 9-µm Diamond on an Ultra-Pol (silk) cloth, 150 rpm, 5 lbs/specimen, 5 minutes (contra rotation)
  • Polish with 3-µm Diamond on a Trident cloth, 150 rpm, 5 lbs/specimen, 4 minutes (contra rotation)
  • Polish with 1-µm Diamond on a Trident cloth, 150 rpm, 5 lbs/specimen, 3 minutes (contra rotation)
  • Polish with 0.05-µm Colloidal Silica on a Microclothpad, 120 rpm, 5 lbs/specimen, 3 minutes (contra rotation)
  • (Contra: Head and platen rotate in opposite directions)

DOWNLOAD THE PRESENTATION HERE

resourcesThe articles and presentations that can be down-loaded from this web site are based upon work done by GFV while employed at Bethlehem Steel (1967-1983), Carpenter Technology (1983-1996), Buehler Ltd. (1996-2009) and Struers (2009-Present) and from the authors consulting work for companies such as, Latrobe Steel, Scot Forge, etc., and from his litigation work. GFV's bylined articles appearing in various issues of the ASM Handbook series have been listed here courtesy of ASM International, Materials Park, Ohio.

Log in to your account or