Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Corrosion behavior of Cr modified HRB400 steel rebar in simulated concrete pore solution
Highlights New Cr modified steels resistant to corrosion are developed for steel rebar. Cr modified steels exhibit higher chloride thresholds and lower corrosion rates. Passive film of Cr modified steel and HRB400 steel are different. Cr modified steels have longer durability than HRB400 steel.
Abstract Cr modified alloy steels using HRB400 steel as base alloy were produced by remelting in a vacuum. Their corrosion resistance were estimated by open circuit potential, electrochemical impedance spectroscopy, X-ray photoelectron spectroscopy and immersion test in saturated Ca(OH)2 simulated concrete pore solution. The modified alloy steels exhibit higher corrosion resistance with a high chloride thresholds, lower corrosion current density and higher impedance than HRB400 steel rebar. Cr can modify the proportion of Cr element in the passive film. The immersion test showed that the new alloy steels have lower corrosion rates. The new alloy steels have longer durability than HRB400 steel.
Corrosion behavior of Cr modified HRB400 steel rebar in simulated concrete pore solution
Highlights New Cr modified steels resistant to corrosion are developed for steel rebar. Cr modified steels exhibit higher chloride thresholds and lower corrosion rates. Passive film of Cr modified steel and HRB400 steel are different. Cr modified steels have longer durability than HRB400 steel.
Abstract Cr modified alloy steels using HRB400 steel as base alloy were produced by remelting in a vacuum. Their corrosion resistance were estimated by open circuit potential, electrochemical impedance spectroscopy, X-ray photoelectron spectroscopy and immersion test in saturated Ca(OH)2 simulated concrete pore solution. The modified alloy steels exhibit higher corrosion resistance with a high chloride thresholds, lower corrosion current density and higher impedance than HRB400 steel rebar. Cr can modify the proportion of Cr element in the passive film. The immersion test showed that the new alloy steels have lower corrosion rates. The new alloy steels have longer durability than HRB400 steel.
Corrosion behavior of Cr modified HRB400 steel rebar in simulated concrete pore solution
Liu, Ming (Autor:in) / Cheng, Xuequn (Autor:in) / Li, Xiaogang (Autor:in) / Jin, Zhu (Autor:in) / Liu, Haixia (Autor:in)
Construction and Building Materials ; 93 ; 884-890
01.05.2015
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Alloy , Steel , EIS , Critical chloride level , Passive film
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