| dc.description.abstract | Dyeing on anodizing process can be done with chemical or natural dyes.
Indonesia has a variety of useful plants as a natural dye, one of which is turmeric.
The purpose of this research is to know the effect of turmeric dye concentration
variation on color brightness, macro structure, surface roughness, oxide layer
thickness and wear rate on aluminum anodizing result. Aluminum plate with 1.5
mm thick was cut with size of 50 x 30 mm. The plate was anodized process with
2 ampere of current, 12 volt of voltage for 30 minutes. Dyeing was carried out
using commercially available turmeric powder. The dyeing process used
variations in concentration of 10, 20 and 30 gram per liter of water at temperature
of 90-97 ° C for 30 minutes. The coloring results were tested for color brightness
by image analysis software, macro structure test and oxide layer thickness using
optical microscope and surface roughness test using roughness tester and wear
test with Ogoshi method. Test results showed the effect of turmeric concentration
variation concentration on color brightness, macro structure, surface roughness
and wear rate. The highest color brightness (RGB) is obtained on a variation of
turmeric concentration of 10 gram / liter. The surface macro structure showed the
existence of homogeneous pores. The most uniform colored staining is obtained
on the variation of turmeric concentration of 30 grams / liter. Whilst the highest
surface roughness was found on aluminum which had been anodized with
variation of turmeric concentration of 30 gram / liter with the value of 1,344 μm, its
wear value presents the lowest of 2.07 x 10-10 mm2 / kg. The concentration
variation of the dye solution did not affect the thickness of the resulting oxide
layer. | en_US |
