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Adsorption/desorption process of 1-(2-aminoethyl)-2-oleyl-2-imidazolinium chloride on carbon steel. To study adsorption of imidazolinium chloride on carbon steel, in-situ atomic force microscopy measurements were performed in air, with and without imidazolinium chloride, in a 1 wt% NaCl solution purged with CO2 at pH 4.
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A test project to examine the susceptibility of Hydrogen Induced Stress Cracking (HISC) has been executed. In this project hydrogen charged samples of Alloy 718 and Alloy 725 have been exposed under tensile stress to establish critical stress levels for initiation of HISC.
In this work, a specially made sample holder that can be fitted inside regular autoclaves was used for simulating sour TLC in the presence of methanol. The experiments showed that for 10 bar H2S + 10 bar CO2, the TLC mass loss rate was 0.2-0.3 mm/y of general corrosion without localized attacks.
The formation of greigite and/or pyrite seems to correlate with onset of localized corrosion Experiments involving deposition of pyrite on the steel surface were conducted to investigate if localized corrosion occurs when pyrite is deposited on mild steel in an aqueous H2S environment.
Selecting cost effective material for a minerals processing application. Critical issues that make a materials choice a success or failure. Metals, composites, thermoplastics and ceramics. CAPEX AND OPEX. Specification. QC. 2016 NACE
Vibratory cavitation testing applied to alloy UNS N10665 at a frequency of 20 KHz and at temperatures of 25°C - in seawater. Free corrosion potentials and mass loss in the presence and absence of cavitation were also determined for this alloy.
Quick, simple, and inexpensive way to evaluate the accuracy of reference electrodes used for obtaining field measurement of structure-to-electrolyte potentials.
Factors which influence laboratory tests…specimen preparation…apparatus…conditions…temperature, velocity, aeration, volume…supporting specimens, duration of test…cleaning specimens…results…corrosion rates. Historical Document 1976
Laboratory method for determining the extent and the rate of uniform corrosion of metals in high temperature water or aqueous solutions at temperatures (> 212 F (100 C) & <~680 F (360 C))…Historical Document 1971
Conducting controlled velocity corrosion tests in the laboratory wherein a corrosive solution may be moved at a known tangential velocity across the face of corrosion test specimens. Historical Document 1972
Revised in 2020! Assessment of corrosion in the field is complex because of the variety of applications, process conditions, and fluid phases that exist in industrial plants where corrosion occurs. A wide range of direct and indirect measurement techniques is available, but each technique has its strengths and weaknesses. In some applications, certain techniques cannot be used. Some techniques can be used online, while others are used off-line. Commonly, more than one technique is used so the weaknesses of one are compensated for by the strengths of another. In other cases, a combination of different techniques can be synergistic, such as process sampling along with detection of corrosion upset.
The purpose of this technical committee report is to analyze the various techniques with respect to their benefits and limitations across the broad spectrum of industries in which they are used.
This revision incorporates Guided Wave Monitoring (GWM), On-Line Gas Chromatography (GC), and Acoustic Solid Detection (ASD) techniques and updates references to NACE standards.
Translational Corrosion Science, the subject of the SSPC 2015 presentation by the Department of Defense Corrosion (DoD) Prevention and Control Program, is a science-based process to accelerate the development and application of high-quality solutions to difficult material degradation problems, and to do so more economically. DoD has launched the translational corrosion science program, assisted by the National Defense University and Potomac Institute for Policy Studies, to fully develop the process concept and to implement the approach.