corrosion-inhibiting behavior of BTAH was studied on API 5LX65carbon steel (material used for oil pipeline) in 0.5% NaCl solution saturated with CO 2 at the temperature rangingfrom25 oC to 85 C.The appropriate adsorption isotherm and the change of standard free energyofadsorption (0) Gads are determinedwith respect Biofilm activity on corrosion of API 5L X65 steel weld Dec 01, 2018 · Corrosion behavior of API 5L X65 carbon steel under supercritical and liquid CO 2 phases in the presence of H 2 O and SO 2 Corrosion , 69 ( 2013 ) , pp. 243 - 250 , 10.5006/0739 CrossRef View Record in Scopus Google Scholar
Jan 16, 2019 · In this study, the CO 2 corrosion behavior of API 5L X52 carbon steel in the form of bare and also covered with calcite scale has been investigated at different temperatures. It was concluded that the presence of calcite scale on the surface of carbon steel resulted in decrease in the general CO 2 corrosion rate in comparison with the bare steel. Comparative Study of the Behavior of API 5L-X65 Grade for API 5L X65 and - 715.8 mV ecs for the ASTM A53-B. However, from 20 minutes onwards, at a potential of -715.8 mV ecs the ASTM A53-B steel increases its potential by approximately 20 mV ecs, thus corroborating the formation of a passive corrosion product. Similar behavior is seen for the API 5L X65 steel at 30 minutes. 0 5 10 15 20 25 30 35 Corrosion Resistance of API 5L Pipeline Steel with Coating Jan 07, 2019 · An API 5L X65 steel pipe (MRC Global) with 323.85 mm in outer diameter and 9.53 mm in wall thickness was used as substrate metal in this study. The chemical composition of the steel provided by the vendor is presented in Table 1. The steel pipe was rst cut into 18 25 mm × 50 mm coupon specimens.
Apr 22, 2014 · API 5L X65 and API 5L X70 are the steel grades largely used to manufacture different products such as pipelines to transport ethanol and the Brazilian gasoline E25 (i.e., 25% ethanol and 75% gasoline type A), storage tanks, and other components for the oil and gas industry. Investigation of the Effect of pH on Stress Corrosion May 11, 2021 · In this study, impedance spectroscopy, slow strain rate tensile test, and scanning electron microscopy were used to investigate the susceptibility of API 5L X65 steel to stress corrosion cracking (SCC) in a sulfide brine solution with different pHs. According to the analysis of SSRT, steel was susceptible to SCC in a brine solution. The reduction area ratio in the air was measured to be 80.3% Paper No. 2291C. API 5L X65 samples were pre-corroded with the aim of leaving an exposed Fe 3 C layer on top of the steel surface, followed by an increase in the FeCO 3 supersaturation level. Authors reported that it was not possible to form a protective FeCO 3 under the proposed experimental conditions, regardless of the high supersaturation levels.
Effect of Impurities on the Corrosion Behavior of CO 2 Transmission Pipeline Steel in Supercritical CO 2-Water Environments specimens were simultaneously exposed to the corrosive environment in order to obtain an averaged corrosion rate. Element Analysis for the Carbon steel (API 5L X65) and the 13Cr Steel (UNS S41000) Used in the Tests THE EFFECT OF BITUMEN COATINGS ON THE The corrosion behavior of uncoated and cut-back bitumen coated X65 Steel samples are being investigated in environments of different pH (2, 3, 4 and 7). Immersion tests were carried out on the samples at 25ºC. The comparison of the corrosion behavior of Corrosion Behavior of API 5L X65 Carbon Steel Under concentration on the corrosion rate of an API 5L X65 steel exposed to supercritical CO 2 /SO 2 phase is shown in Figure 3. Corrosion rate at 1% SO 2 (0.08 MPa) was reported in a previous study and it is FIguRe 1. Schematic drawing of the CO 2/SO 2 pressurized system used for the corrosion tests. tAble 1 Elemental Analysis for the API 5L X65 Carbon Steel (wt%)