ALUMINUM ALLOY FOR FORMING REFLECTING FILM IN OPTICAL RECORDING DISK

摘要

PROBLEM TO BE SOLVED: To provide an aluminum alloy which realizes a reflecting film having high reflectance, high thermal conductivity and superior corrosion resistance and heat resistance, so as to respond to high recording density of optical disks. SOLUTION: The aluminum alloy for the formation of the reflecting film of an optical recording disk contains 0.5 to 20 wt.% of Rh and/or Ag and the balance Al.