Keruing (dipterocarpus grandiflorus) oleoresin as aluminum 1100 corrosion inhibitor in 3,5 % NaCl solution

Abstract

Aluminum and its alloy corrosion inhibition have been important technological subjects due to the increasing application of the material. The corrosion inhibition of aluminum 1100 by Keruing (Dipterocarpus grandiflorus) oleoresin in 3,5 % NaCl solution was investigated using the galvanostatic polarization technique. Aluminum 1100, which had been dissolved in diesel fuel with a concentration of 0 %, 25 %, 50 %, 75 %, and 100 %, was immersed in Keruing oleoresin solution. The results showed that the efficiency of inhibition increases along with the increase of Keruing Oleoresin concentrations. Aluminum 1100 Keruing oleoresin coated with 50 % concentration in diesel fuel had 0,083 MPY corrosion rate, 99,74 % corrosion inhibitor efficiency. Keruing oleoresin can potentially be used as corrosion inhibitor that can be applied to aluminum in coastal areas.

Keywords

• aluminum 1100
• chemical composition
• corrosion
• oleoresin
• dipterocarpus grandiflorus