Study the Effect of Vibration Speed on Corrosion Rate of Tow Steel Alloys X20 and X60

Abstract

A study was conducted to demonstrate the effect of mechanical vibrations onthe corrosion of steel pipelines for oil (x60, x20) in the corrosive medium is sea waterby using the traditional method of weight loss, where the test samples are cut cubicforms and dimensions (10x10x10 mm3). And offered samples to the corrosivesolution (sodium chloride 3.5% NaCl) and called the term (sea water) in chemicalengineering and corrosion engineering fields. This medium would be static withfrequency (0 Hz), and vibrated with a five frequencies (5, 10, 15, 20& 25 Hz) and theamplitude within the range of (0.0013-0.00088m) to be the speed of vibration withinthe (0.00475-0.022), and for a test time (2hr.). These laboratory vibrations wereobtained from the design and manufacture of corrosion presence vibration instrumentaccording to U.S. global standard (ASTM G32). It was found that the speed ofvibration increase the corrosion rate of these alloys of (0.00073 gmd) at the speed (0)to (0.00287 gmd) at the speed (0.022) for alloy X20, and (0.00195 gmd) at the speed(0) to (0.00402 gmd) at the speed (0.022) for alloy X60. That is, the highest valuefor the rate of corrosion is to alloy X60 at the speed of vibration (0.022), followed bycorrosion rate of alloy X20 at the same speed. When the speed of vibration was (0),the corrosion rate of alloy X60 is also more of the corrosion rate of alloy X20.