Carbon Steel
Mostrando 1-12 de 341 artigos, teses e dissertações.
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1. Synergy between Experimental and Theoretical Investigations Reveals the Anti‑Corrosion Efficiency of Imine-Chalcones
The inhibitory action of three imine-chalcones on carbon steel corrosion in HCl was investigated by theoretical and experimental methods. Quantum descriptors were calculated at the conductor-like polarizable continuum model (CPCM)-Becke-3 Parameter-Lee-Yang-Parr (B3LYP)-D3/def2-TZVPP level allowing the prediction of efficiency inhibition ranking. Electrochem
J. Braz. Chem. Soc.. Publicado em: 2021-08
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2. Analysis of carbonation and hydration of BOF steel slag for application as railway ballast
Abstract The reutilization of waste is a valuable alternative for the preservation of natural resources and the environment. In this sense, Basic Oxygen Furnace (BOF) steel slag is one of the most residues generated in steel the industry. It is estimated that for each ton of steel produced, about 150 kg of steel slag is generated in the BOF process. Generall
REM, Int. Eng. J.. Publicado em: 2020-12
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3. The Comparative Investigation of Corrosion and Passivation for X65 Carbon Steel in pH 1 to 5 HNO3 Solutions without and with 0.01 mol L-1 NaNO2
The influence of 0.01 mol L-1 NaNO2 addition on the corrosion and passivation of X65 carbon steel in pH 1 to 5 HNO3 solutions was investigated and compared by electrochemical methods and microstructural techniques. In the pH 1 to 5 solutions without NaNO2, the X65 steel presented the electrochemical characteristic of active dissolution, and the corrosion rat
J. Braz. Chem. Soc.. Publicado em: 2020-04
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4. Synthesis of New Phenolic-Schiff Base and Its Application as Antioxidant in Soybean Biodiesel and Corrosion Inhibitor in AISI 1020 Carbon Steel
New Schiff base compound N, N’-bis-(4-hexadecanate)-salicylethylenediamine (named IM) was synthesized, and characterized via infrared and nuclear magnetic ressonance spectroscopies. IM was tested as corrosion inhibitor and antioxidant in soybean biodiesel. Corrosion studies were developed with AISI 1020 carbon steel in a three-step accelerated corrosion as
J. Braz. Chem. Soc.. Publicado em: 2020-03
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5. Evaluation of Aqueous Coffee Husks Extracts as a Corrosion Inhibitor of 1020 Carbon Steel in 1 mol L-1 HCl Solution
Corrosive processes in acidic medium reduce the performance and durability of metallic materials, causing problems to several industries. Corrosion inhibitors are commonly used to decrease these effects. As these inhibitors must be ecologically friendly currently, this work evaluated the anticorrosive effect of natural extracts of coffee husks (Coffea arabic
Mat. Res.. Publicado em: 09/12/2019
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6. Investigation of Physicochemical Characteristics of Heavy, Medium and Blend Crude Petroleum on Corrosion Resistance of AISI 1020 Carbon Steel
This work investigates the influence of the physicochemical characteristics of heavy (17.5 °API), medium (28.3 °API) and blend (50% heavy + 50% medium) crude petroleum on corrosion of AISI 1020 carbon steel at 25.0 ± 1.0°C. The corrosion resistance of steel was analyzed by electrochemical impedance spectroscopy, potentiodynamic polarization, and scanning
Mat. Res.. Publicado em: 05/12/2019
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7. Efeito da Adição de Propileno aos Gases de Proteção Convencionais na Soldagem GMAW Aplicada a Juntas de Topo e Ângulo
Resumo O presente trabalho teve por objetivo avaliar a adição de 1,3% de C3H6 ao CO2 puro e 0,6% de C3H6 à mistura de Ar+25%CO2, na soldagem de aço carbono utilizando o processo Gas Metal Arc Welding (GMAW) aplicado em juntas de topo com chanfro em V e ângulo em T. As soldas foram realizadas utilizando chapas de aço SAE 1020, arame de solda ER70S-6 de
Soldag. insp.. Publicado em: 02/12/2019
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8. Avaliação dos processos de fratura em filmes finos através da simulação de ensaios de indentação com penetradores esféricos
RESUMO Recentes trabalhos propõem a utilização dos ensaios de indentação como uma ferramenta capaz de avaliar características mecânicas de filmes finos, assim como avaliar possíveis falhas em sistemas que conjugam filmes de alta dureza depositados em substratos metálicos em solicitações tribológicas. Entretanto, a implementação da técnica de i
Matéria (Rio J.). Publicado em: 25/11/2019
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9. Characterization of Different Surface Layers Produced by Solid Boron-Nitro-Carburizing Thermochemical Treatment on AISI 1020
The aim of this study is to obtain and characterize surface layers on low carbon steel with the pack boron-nitro-carburizing process. Different mixtures of commercial powders (Turbonit® and Ekabor®) were used to investigate the case properties, microstructure and phases formation on AISI 1020 steel. A series of experiments were conducted in solid medium wi
Mat. Res.. Publicado em: 04/11/2019
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10. Characterization of Austenite Decomposition in Steels with Different Chemical Concepts and High Potential to Manufacture Seamed Pipes for Oil and Gas Industry
This work presents the characterization of austenite decomposition kinetics in two steels during continuous cooling considering non-deformed austenite grains. Two different chemical concepts of steels were evaluated: low carbon - high manganese and a relatively new concept based on low carbon - low manganese - high niobium contents. Dilatometric experiments,
Mat. Res.. Publicado em: 21/10/2019
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11. Lime Addition Effect on Corrosion of Reinforced Mortar
ABSTRACT This study aims to investigate the effect of lime addition in cement mortar on corrosion resistance of carbon and galvanized steel reinforcements. Mixed mortars were studied containing three contents of lime (6.7, 13.3, and 26.3 wt.%). The water retention, incorporated air, and compression strength of reinforced mortars were determined. Immersion te
Matéria (Rio J.). Publicado em: 16/09/2019
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12. Avaliação da resistência à corrosão do filme de silanoviniltrimetoxisilano modificado com íons Ce (III) e Ce (IV) como pré-tratamento do aço carbono
RESUMO Silanos são compostos organo funcionais utilizados como agentes de acoplamentos entre interfaces orgânicoinorgânicas, com boas propriedades de adesão. Por esta razão, o uso de silanos como pré-tratamento para aços, vem ganhando espaço já que também são geradores de resíduos de menor toxidade ao meio ambiente e à saúde humana. Para melhor
Matéria (Rio J.). Publicado em: 16/09/2019