[PDF] Top 20 Corrosion Behavior of X70 and X80 Pipeline Steels in Simulated Soil Solution

... advanced pipeline steel is needed ...mainly X70 pipeline steel. However, during the pipeline construction, the problem of the pipeline corrosion emerged, which is also inevitable ... See full document

... AC corrosion behavior, testing the polarization curve is a well-used method to reveal the electrochemical mechanism behind this ...passive behavior of different metals were examined by measuring ... See full document

... the corrosion in service ...free corrosion potential under usual circumstance (neutral aqueous solution or ...service pipeline. The cathodic protection parameters of pipeline steel X65, ... See full document

... analysis, X80 steel under AC interference has a better corrosion resistance than X65 ...galvanic-type corrosion cells, which would facilitate the corrosion of X65 ...micro-galvanic ... See full document

... of soil corrosion and established the multiple regression equation about corrosive ...the pipeline protection in area polluted by heavy ...of corrosion behavior of X70 steel in ... See full document

... between pipeline CPP and pipeline hydrogen evolution conditions is ...of pipeline steel report empirical values about the cathodic protection potential and the optimum cathodic protection potential ... See full document

... localized corrosion of carbon steel [1]. Pitting corrosion has often been observed on pipeline steels due to AC interference ...on X80 steel, accelerate the occurrence of serious ... See full document

... weaker corrosion resistance than base metal and welded material with or without stressing levels in near-neutral solution or high-pH solution ...the corrosion resistance in HAZ through ... See full document

... SECM, a field observation technology, has obvious advantages of being real-time, in situ, and three-dimensional. In addition, it has unique chemical sensitivity: by scanning the Faraday current image of different ... See full document

... to corrosion failure ...alkaline soil areas, which is one of the soil environments lead to corrosion failure of pipeline ...of pipeline steel which runs more than 4000 km across ... See full document

... on corrosion of X80 pipeline steel was investigated in soil-simulating solution by open circuit potential (OCP) and corrosion potential test, potentiodynamic polarization ... See full document

... X100 pipeline steel were prepared for thermal simulation. The simulated HAZs of ...the corrosion studies were cubes with of 10 mm side cut from the center of the HAZs of the thermal simulation ...the ... See full document

... the corrosion behavior of materials in recent [21, 28, ...of X80 steel with different ...un-corroded X80 steel was very negative, but the potential distribution was ...of X80 steel was ... See full document

... on soil corrosion mainly focused on the impact of soil parameters on corrosion behavior, but the cathodic corrosion reaction of steel in acidic soil has not been studied ... See full document

... surface corrosion phenomenon was not obvious and produced only few minor corrosion ...the X80 pipeline steel showed the highest corrosion resistance, which was due to the widest ... See full document

... buried pipeline picks up current strayed from an urban subway, high-speed railway, or other electric traction systems, stray DC is generated ...the pipeline coatings ... See full document

... of corrosion products of X80 pipeline steel in ...NaCl solution and Dagang solution under the coupling of ...the X80 pipeline steel underwent a rather uniform ... See full document

... clay soil was leached by acid rain, the leaching solution will be formed through the ions ...leaching solution can reach the coating/steel interface through the cracks of disbonded coating and form ... See full document

... in soil corrosion, on the one hand, the water makes the soil become an electrolyte that it forms a prerequisite of the corrosion of the battery ; on the other hand, water content significantly ... See full document

... electrochemical behavior of X80 pipeline steel in alkaline soil solution with different pH value was studied by mean of potentiodynamic polarization and electrochemical impedance ... See full document