The Experts below are selected from a list of 99765 Experts worldwide ranked by ideXlab platform
D. Qu - One of the best experts on this subject based on the ideXlab platform.
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Theoretical and experimental study of galvanic coupling effects between Carbon Steel and stainless Steels
Journal of Applied Electrochemistry, 2010Co-Authors: S. Qian, D. QuAbstract:The use of stainless Steel in high corrosion risk areas represents a viable option for reducing the life-cycle cost and extending the service life of concrete structures. However, the possible galvanic corrosion between it and Carbon Steel continues to be a concern. In this article, the galvanic coupling behaviours of Carbon Steel and three different stainless Steels were investigated in simulated pore solutions and concrete specimens. The results showed that the oxygen reduction reaction was much lower on stainless Steel than on passive Carbon Steel, leading to a lower galvanic coupling current between stainless Steel and corroding Carbon Steel than that between passive and corroding Carbon Steels. However, rust contamination of stainless Steel was found to increase galvanic coupling corrosion on Carbon Steel.
Zehbour Panossian - One of the best experts on this subject based on the ideXlab platform.
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corrosion of Carbon Steel pipes and tanks by concentrated sulfuric acid a review
Corrosion Science, 2012Co-Authors: Zehbour Panossian, Neusvaldo Lira De Almeida, Raquel Maria Ferreira De Sousa, Gutemberg Souza Pimenta, Leandro Bordalo Schmidt MarquesAbstract:Abstract The corrosion of Carbon Steel storage tanks and pipes by concentrated sulfuric acid is a great concern. The contact of Carbon Steel with concentrated sulfuric acid generates an immediate acid attack with the formation of hydrogen gas and ferrous ions, which, in turn, form a protective layer of FeSO 4 on the metallic surface. This work presents a review of Carbon Steel corrosion in concentrated sulfuric acid. The corrosion mechanism of Carbon Steel in sulfuric acid, accelerating factors, types of Carbon Steel corrosion and the preventive methods against this corrosion are outlined.
Bo Lv - One of the best experts on this subject based on the ideXlab platform.
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low temperature bainite in low Carbon Steel
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2014Co-Authors: Xiaoyan Long, J. Kang, Fucheng Zhang, Bo LvAbstract:Abstract The microstructures and the mechanical properties of 30MnSiCrAlNiMo low-Carbon Steel were systematically optimized by a series of heat-treatment processes, and the heat-treatment process of low-temperature bainite in low-Carbon Steel was explored. Results showed that the microstructure of low-temperature bainite in the low-Carbon Steel, containing a fine plate of carbide-free bainitic ferrite and a thin film of retained austenite, could be produced by continuous cooling transformation around the Ms temperature from Ms+10 °C to Ms−20 °C at a cooling rate of 0.5 °C min −1 . A new model was proposed to evaluate the comprehensive mechanical properties of Steel, which found that the low-temperature bainite had the best comprehensive mechanical properties compared to any other microstructures for the low-Carbon Steel. The higher dislocation density and finer bainitic ferrite plate in the low-temperature bainite resulted in the higher yield strength and the higher toughness, but relatively lower ultimate tensile strength owing to the lower work-hardening rate caused by the higher initial dislocation density. There were some very fine particles in the bainitic ferrite of the Steel after isothermal treatment at higher temperature. The ultimate tensile strength and the low-temperature impact toughness of the Steel decreased with the volume fraction of the retained austenite increasing, while the elongation initially increased with an increase in the volume fraction of the retained austenite (
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flash butt welding of high manganese Steel crossing and Carbon Steel rail
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2007Co-Authors: Fucheng Zhang, Bo Lv, Baitao Hu, Yanguo LiAbstract:Abstract This study sets out to introduce the flash butt welding of high manganese Steel crossing and Carbon Steel rail by employing an austenite–ferrite two-phase stainless Steel insert. There are two flash butt welded joints for the connection of the high manganese Steel and the Carbon Steel rail, one is the welded joint of the Carbon Steel and the stainless Steel, and the other is that of the high manganese Steel and the stainless Steel. The mechanical properties and the microstructures of the welded joint are studied by means of static bending, three bend-fatigue and metallographic for the practical rail. There is no carbide precipitation on the austenitic grain boundary in the HAZ of the high manganese Steel crossing subjected to jetting water cooling after the flash butt welding, and there is no martensitic transformation in the HAZ of the Carbon Steel rail subjected to annealing treatment by a special induction heat treatment device, which will avoid the brittleness of the welded joint effectively. The welded joint of the Carbon Steel rail and the stainless Steel insert is annealed at 900 °C for 10 min, which will release the residual stress of the welded joint and thus enhance the strength of the welded joint. It is indicated that the flash butt welding of the high manganese Steel crossing and the Carbon Steel rail via the austenite–ferrite two-phase stainless Steel insert is feasible.
S. Qian - One of the best experts on this subject based on the ideXlab platform.
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Theoretical and experimental study of galvanic coupling effects between Carbon Steel and stainless Steels
Journal of Applied Electrochemistry, 2010Co-Authors: S. Qian, D. QuAbstract:The use of stainless Steel in high corrosion risk areas represents a viable option for reducing the life-cycle cost and extending the service life of concrete structures. However, the possible galvanic corrosion between it and Carbon Steel continues to be a concern. In this article, the galvanic coupling behaviours of Carbon Steel and three different stainless Steels were investigated in simulated pore solutions and concrete specimens. The results showed that the oxygen reduction reaction was much lower on stainless Steel than on passive Carbon Steel, leading to a lower galvanic coupling current between stainless Steel and corroding Carbon Steel than that between passive and corroding Carbon Steels. However, rust contamination of stainless Steel was found to increase galvanic coupling corrosion on Carbon Steel.
Leandro Bordalo Schmidt Marques - One of the best experts on this subject based on the ideXlab platform.
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corrosion of Carbon Steel pipes and tanks by concentrated sulfuric acid a review
Corrosion Science, 2012Co-Authors: Zehbour Panossian, Neusvaldo Lira De Almeida, Raquel Maria Ferreira De Sousa, Gutemberg Souza Pimenta, Leandro Bordalo Schmidt MarquesAbstract:Abstract The corrosion of Carbon Steel storage tanks and pipes by concentrated sulfuric acid is a great concern. The contact of Carbon Steel with concentrated sulfuric acid generates an immediate acid attack with the formation of hydrogen gas and ferrous ions, which, in turn, form a protective layer of FeSO 4 on the metallic surface. This work presents a review of Carbon Steel corrosion in concentrated sulfuric acid. The corrosion mechanism of Carbon Steel in sulfuric acid, accelerating factors, types of Carbon Steel corrosion and the preventive methods against this corrosion are outlined.
