Inhibisi Korosi Baja oleh Ekstrak Serbuk Gergaji Kayu dalam Medium Air Laut
Abstract: The using of steel
support building system in some productions in Indonesia, such us oil
refineries, cooling systems production, shipbuilding and marine equipment. The
sea is a corrosive environment so the metals which stay in the sea easy to
corrosion. One of all effort to reduce the rate of corrosion of steel is the
use of organic inhibitors such as tannins, nicotine and lignin. Wood sawdust is
one natural ingredient that contains lignin. These compounds can complex with
iron. This study aims to utilize wood sawdust extract as corrosion inhibitor of
steel in medium of sea. Wood sawdust was extracted by using alkali method. The
rate of corrosion and steel corrosion inhibition efficiency with wood sawdust
extracts were determined by using the gravimetric method (the reduction of
steel weight before and after corrosion). Based on the results of the study
showed that the extract of wood sawdust can reduce the corrosion rate of steel
in the medium of the sea with corrosion inhibition efficiency of 38.8% on 30
ppm the extract concentration. The analysis of steel surfaces using a stereo
microscope with a magnification 40 times. It can seen the difference surfaces
between coated steel and uncoated with wood sawdust extract in medium of the
sea. Coated steel less rusty than uncoated.
Penulis: Putri Hartika,
Yerimadesi, Hardeli
Kode Jurnal: jpkimiadd130516
