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Showing 1 to 20 of 51 for “"Corrosion inhibitor"”.
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Corrosion Inhibitor for Potash Solution Mining
Corrosion has always been a costly operational problem in potash solution mining operations. With the aim of reducing operating cost, this work proposed to apply a corrosion inhibitor that is compatible to potash brine environments, less toxic than the base substrate potash, commercially available, …
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Structural performance evaluation of the Postrite post-treatment corrosion inhibitor system
… chlorides penetrate the concrete and initiate corrosion of the reinforcing steel. A proven corrosion inhibitor system, the Postrite Post-treatment System, used in reinforced concrete rehabilitation, employs the use of a spray treatment of Postrite (15% calcium nitrite by weight) onto the …
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Flash heating of epoxy-based corrosion inhibitor thin films on aluminum substrates
… onto epoxy-polyamide primer which is used as a corrosion inhibitor coating. The thermal degradation initiation temperature of the epoxy polyamide film increased with increasing heating rates. This coating is a high solids epoxy primer manufactured by Deft Inc. A xenon flash lamp was focused to a …
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Performance of a penetrating corrosion inhibitor in controlling carbonation induced corrosion in reinforced concrete
Reinforcement corrosion in concrete remains the most serious cause of premature deterioration of concrete structures world-wide, and many methods have been proposed to combat this problem. One method of improving the durability of concrete in aggressive environments is the use of corrosion …
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Water Quality, Aesthetic, and Corrosion Inhibitor Implications of Newly Installed Cement Mortar Lining Used to Rehabilitate Drinking Water Pipelines
… the affects of three different phosphate-based corrosion prevention additive regimes were evaluated. Cement mortar leachates impacted water quality significantly during the first week of exposure. Alkalinity, hardness and pH increased dramatically after initial exposure, rising to approximately …
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A Thesis on the Interactions between Lead Pipe Scales and Dissolved Silica from the Addition of Sodium Silicate as a Corrosion Inhibitor
… convey, but the mechanism of silica uptake and corrosion control have not been reported. Knowledge of variables which affect the uptake of dissolved silica and the consumption rate of added sodium silicate by scales of corrosion products that are present on lead service lines will be useful to …
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An electrochemical and surface analytical investigation of iron oxidation, passivation and corrosion inhibition
… of iron oxidation, passive film formation and corrosion inhibitor interaction is presented. Ultrahigh vacuum surface analysis by Auger electron spectroscopy (AES), low energy electron diffraction (LEED), thermal desorption mass spectrometry (TDMS) and ion bombardment (depth profiling) was used …
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Functionalization of nanoclays through exchange reactions
… based ionic liquids (ILs) and a commercial corrosion inhibitor. Clay modification was examined by TGA, FTLR and WXRD. The cationic clay modified with both ILs had similar thermal stabilities since they contained the same cation although the original anions were different. The thermal …
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Performance Evaluation of Epoxy-Coated Reinforcing Steel and Corrosion Inhibitors in a Simulated Concrete Pore Water Solution
… from the coater's plant, three commercial corrosion inhibitors, and one ECR plus a corrosion inhibitor were evaluated as reinforcing steel corrosion protection systems against chloride induced corrosion. The three corrosion inhibitors were calcium nitrite, an aqueous mixture of esters and …
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Modeling the Time to Corrosion Initiation for Concretes with Mineral Admixtures and/or Corrosion Inhibitors in Chloride-Laden Environments
The application of a mineral admixture, or a corrosion inhibitor, or a combination of both are methods used for the corrosion protection for reinforced concrete bridges. The results of a study on evaluation of corrosion inhibitors from three different manufacturers and of concretes with fly ash, …
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Effect of carbohydrate degradation upon browning and corrosion in canned applesauce
… they originate from processing water or from corrosion reactions, influence the dissociation of the sugars and ultimately the color and the keeping quality of the canned products. A tentative explanation of the mode and rate of sugar degradation in the presence of tin ions in canned applesauce …
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Developing green processes for the conversion of biobased materials into pyrones
… applications. The synthetic applications are corrosion inhibitors, plasticizers, and block copolymers. Triacetic Acid Lactone (TAL) is a bio-based molecule fermented from Saccharmyces cerevisiae. In the first chapter, we discuss the conversion of triacetic acid lactone to corrosion inhibitors. …
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Effectiveness of Non-Chromate Inhibitors on Preventing Corrosion of Aluminum Alloys
… the adsorption of ions on a metal affects the corrosion resistance of that metal, ion adsorption on aluminum is an important issue. In this study, the adsorption/accumulation of proposed inhibiting ions on aluminum has been studied using a radioactive labeling method. Chromate and phosphate …
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Examination of produced water from the Al-Hamada oilfield, Libya.
… compounds (heavy metals), added chemicals (corrosion inhibitor and biocides). Determinations were carried out using techniques, such as, GC-FID (HS-SPME), GC-MS, (ESI-MS/MS) and (LC-ESI-MS). The results indicate that the metals were within the expected natural ranges compared to those …
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Copper Surface Chemistry Relevant to Chemical Mechanical Planarization (Cmp)
… project investigated the effect of structure of corrosion inhibitors benzotriazole and 1,2,4-triazole (TAZ) on copper removal rate during CMP. Removal rates were higher for solutions containing TAZ than solutions containing BTA. The corrosion inhibitor films were characterized using AFM, cyclic …
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Corrosion of reinforcement in concrete : the effectiveness of organic corrosion inhibitors
Reinforcement corrosion in concrete has presented engineers with the challenge of finding ways of prolonging the service life of structures built in aggressive environments. One method of increasing the durability of concrete in aggressive environments is the use of corrosion inhibitors. In this …
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Corrosion study of iron using piperazine derivatives as inhibitors
The corrosion of iron by HC1 using cyclic polyethyleneimines as inhibitors has been done many times. Piperidine, a cyclic six membered ring CH.NH has attracted the most attention as an inhibitor because of the high basicity and lack of strain on the bonds in the ring. Piperazine, a cyclic six …
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Repair and rehabilitation of reinforced concrete harbour structures
… concrete infrastructure due to chloride-induced corrosion is widespread throughout the marine environment in South Africa. This thesis is an investigation into four current concrete repair contracts at harbours in the Western Cape. The works are critiqued in terms of repair philosophy and …
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Innovative Deposition of Corrosion Inhibitors by Abrasive Blasting
… surface cleaning procedure, for removing old corrosion scales and paint prior to the application of new coatings. A certain percentage of the garnet and its impurities remain attached, partially covering the steel. Between cleaning and repainting, seawater aerosol droplets can impact the steel …
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Influence of Water/Hydrocarbons Co-Condensation on Top of the Line Corrosion
<p>Top of the line corrosion (TLC) is a significant concern in wet gas transportation, where temperature gradients between internal pipeline and outside environments lead to the condensation of water vapor and a certain fraction of hydrocarbons. Liquid water from condensation is greatly corrosive …
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