Al Surface Treatment Agent


Surface Treatment Agent for AlDC process (alternative to HNO3)

Aluminum and its alloy generate large amount of smut when oxidized or etched if there are other metal contents inside, and the smut adheres to the metal surface and make it blackish. In order to desmut, a mixture of nitric acid and hydrofluoric acid is widely used. However, those substances are highly toxic and extremely hazardous when in contact with human body. It also generates large amount of fume (NO, NO2, HF) and creates poor and dangerous working condition. PEROXENE-3 solves these problems and provides the excellent desmuting effects. The product does not only minimize the fume (NO, NO2, HF), but also maximize the adhesion of the final plating on the surface.


• Does not generate toxic NOx gas during the process
• Does not generate steam/vapor since the solution can be used at room temp.
• Removes smut and Si residues perfectly
• Provides fine plating layer and good adhesion even in temp. of 200℃
• Minimizes faults around the holes
• Reduces wastewater treatment process and costs

[ Properties and method ]

Appearance Colorless transparent liquid Concentration Original/undiluted
Odor Weak acid odor Temp. Room temp. ~ 50 ℃
Acidity (1%sol),
3.32±0.5 M.O/1N NaOH Method
S/G (g/ml) 1.13 ± 0.02 Packing 20L (pail) / 200L (drum)

※ Process

  • Degreasing, etching
  • Washing
  • Desmutting (PEROXENE-3)
  • Washing
  • Post processing

※ Solution management : Add adequate amount of original solution when acidity is decreased during use.