Protection of Metals
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Inhibition Effect of Binary Mixtures of Metal Salts on Aluminum Corrosion in Hydrochloric Electrolytes
Protection of Metals - Tập 37 - Trang 500-505 - 2001
The protection effects of tin, zinc, nickel, iron, and copper chlorides and their binary mixtures with cadmium chloride or thallium nitrate were compared, their effective concentrations being equal. In some cases, the mixtures proved to be better inhibitors than their constituents. Different approaches to the estimation of the mutual effects of the salts in their binary mixtures are discussed.
Dependence of the Protective Properties of Mixtures Based on Several Reaction Series on the Number and Concentrations of the Components
Protection of Metals - Tập 38 - Trang 7-12 - 2002
Mixtures based on azomethine, imidazobenzoimidazole, and pyrimidobenzoimidazole derivatives were tested as inhibitors of iron corrosion in 1 M H2SO4 in the presence of 0.25 mol/l NaCl. The number and concentrations of their components were varied with the aim of studying their influence on the protection effects of the mixtures. The resulting experimental dependences, of the protective effectivene......
Kinetics of codeposition of copper with N-methylpyrrolidone in sulfate water-dimethylsulfoxide electrolytes
Protection of Metals - Tập 42 - Trang 588-595 - 2006
The electrolyte composition is found to affect the composition and density of the adsorption layer on the electrode. The lowest process rate is observed in the water structure stabilization range under conditions of the preferential adsorption of the additive and organic solvent molecules. The electroreduction of copper(II) ions involves the stage of their penetration through the adsorption film, ......
Protection of systems with faulty sealing by volatile corrosion inhibitors
Protection of Metals - Tập 43 - Trang 255-258 - 2007
Processes that initiate corrosion in systems with faulty sealing are analyzed in terms of a mathematical model developed to describe metal protection with volatile inhibitors in such systems. It was demonstrated that the protection times are often determined by the kinetics of dilution of an inhibitor with water coming from the atmosphere. The ways of enhancing the vapor-phase protection are propo......
On steel protection with volatile corrosion inhibitors in H2S-containing media
Protection of Metals - Tập 36 - Trang 474-478 - 2000
The corrosion behavior of aCt3-type steel in hydrogen sulfide media, including those containing CO2, is studied. The inhibition effects of a volatile, water-soluble inhibitor (IPKhAN-72) and the starting aliphatic amine for its synthesis are compared. IPKhAN-72 is found to be more effective, especially in the presence of CO2. In CO2-free hydrogen sulfide media, IPKhAN-72 functions as an anodic inh......
Increasing the corrosion resistance of oil production equipment and pipelines
Protection of Metals - - 2008
Interrelation between partial reactions during alternating-current polarization of copper in chloride environments
Protection of Metals - Tập 42 - Trang 144-148 - 2006
Infralow-frequency alternating-current polarization of a copper electrode in chloride environments causes an increase in the pH of a near-electrode layer, as well as the concentration of hydroxide ions adsorbed at the electrode, during the cathodic half-period. This facilitates the oxidation of copper during the subsequent anodic half-period and changes the character of the oxidation products, tha......
Protection of carbon steels against atmospheric corrosion in a wet tropical climate using gas-plasma metallization with aluminum
Protection of Metals - Tập 44 - Trang 673-682 - 2008
Results of testing for resistance to atmospheric corrosion in a humid-tropical climate (in experimental chambers and under outdoor conditions) have been performed for templates of ribbed pipes made of a carbon steel with various types of anticorrosion (paint, diffusional, metallic) coatings. An optimum type of coating has been determined, its properties have been investigated, and the optimum thic......
The Modifying Fusion of Coatings from Self-Fluxing Alloys with a Strengthening Phase
Protection of Metals - Tập 38 - Trang 355-358 - 2002
The regularities of the redistribution of strengthening additive phases, as well as fusible slag inclusions, during the fusion of composite coatings based on self-fluxing alloys are investigated.
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