| dc.description.abstract | Corrosion is a chemical phenomenon that occurs in metal materials in a wide variety of environmental
conditions. always good corrosion causing losses losses that are directly or indirectly impacted. one way
of corrosion prevention is the addition of corrosion inhibitors. Corrosion inhibitor is a substance that is
added to the medium to prevent or reduce the rate of corrosion of metals in the environment . In this
study , the authors make use of a corrosion inhibitor cocoa peel extract from the rind of the results of
maceration with the variation of the cocoa peel extract concentration was 0 ppm , 500 ppm , 1000 ppm ,
1500 ppm and 2000 ppm in sea water media using specimens of carbon steel pipe A53,The purpose of
this study was to determine the effect of variations in the concentration of cocoa peel extract against
corrosion rate and efficiency of inhibitors that occur in the carbon steel pipe A53 and analysis form
macroscopic and microscopic corrosion that occurs in the specimen by using a camera and test
equipment microscope with 200x magnification. From the results of this study concluded that there are
significant variations in the concentration of the tea leaf extract against corrosion rate of carbon steel
pipe A53. At 2000 ppm concentration variation, occurred average value of the lowest rate of corrosion
inhibitor that is 0,2384 mdd and highest efficiency 83.37 %. | en_US |
