Abstract :
Aluminum anodizing is the process of electrolysis using an electrolyte
solution as a link between the cathode and anode. Aluminum is installed on the
positive pole (anode), in which the surface undergoes an oxidation reaction and
forms an aluminum oxide layer so that it becomes a protective layer and functions
as a decorative.
In this study, the anodizing process used currents of 1.5 A, 2 A and 2.5 A
with the time of 15 minutes. The thickness gauge test used 3 random test points on
the specimen. Corrosion testing used 30% NaCl solution by soaking the specimen
for 30 days.
The results showed that within 15 minutes, the more anodizing current,
the more open the aluminum pores. Color coating increases the physical value of
the specimen before entering the sealing process. The results of thickness gauge
testing obtained 3.72 ?m at 1.5 A current, 6.02 ?m at 2 A current and 8.04 ?m at
2.5 A current. The best value in thickness gauge testing was 8.04 ?m at 2.5 A
current. The results of corrosion testing obtained 0.2709 mpy at 1.5 A current,
0.1814 mpy at 2 A current and 0.1022 mpy at 2.5 A current. The best value on the
corrosion testing was 0.1022 mpy at 2.5 A current. The best test on thickness
gauge and corrosion is at 2.5 A current with 15 minutes.