| 配方類型： |
METALS AND THEIR TREATMENT |
| 配方說明： |
Coloring Copper Gray |
| 配方組成： |
Immersion time/5 to 10 sec.
If you want a scratch-brushed finish, immerse the part in the
arsenic trioxide solution, rinse, brush wet, and re-immerse for
recoloring. The coating is a displacement film of arsenic which has
relatively little resistance to abrasion.
Formula No.
Ferric chloride (6H4O) or ferric sulfate (9H2O)/15 oz/gal
Immersion time/10 sec.
Hydrochloric acid (35%)/1 gal
Arsenic trioxide/13 to 14 oz/gal
Arsenic trioxide/4 oz/gal
Hydrochlori |
|
