Effects of Cr, Ni and Cu on the Corrosion Behavior of Low Carbon Microalloying Steel in a Cl− Containing Environment

Zhou, Yuke; Chen, Jun; Xu, Yujie; Liu, Zhenyu

doi:10.1016/j.jmst.2012.12.013

Cited by 132 publications

(36 citation statements)

References 23 publications

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“…Cr is known to improve the corrosion resistance of an alloy [35,36]. Samples containing high at% Cr are expected to have low corrosion rates and vice versa.…”

Section: Corrosion Behaviormentioning

confidence: 99%

Hydrogen Storage Characteristics and Corrosion Behavior of V-rich Ti-V-Cr-Fe Alloy

Abdul¹,

Chown²,

Odusote³

et al. 2017

Preprint

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Abstract:In this work, we investigated the effects of heat treatment on the microstructure, hydrogen storage characteristics and corrosion rate of a Ti34V40Cr24Fe2 alloy. The arc melted alloy was divided into three samples, two of which were separately quartz-sealed under vacuum and heated to 1000 °C for 1 h; one of these samples was quenched and the other furnace cooled to ambient temperature. The crystal structures of the samples were studied via X-ray diffractometry and scanning electron microscopy. Absorption/desorption characteristics were investigated using a Sievert apparatus. Potentiostat corrosion tests on the alloys were performed using an AutoLab ® corrosion test apparatus and electrochemical cell. All samples exhibited a mixture of body-center-cubic (BCC) and Laves phase structures. The corrosion rate, maximum absorption, and useful capacities increased after both heat treatments. The annealed sample had the highest absorption and reversible capacity. The plateau pressure of the as-cast alloy increased after quenching. The corrosion rate increased from 0.0004 mm/y in as-cast sample to 0.0009 mm/y after annealing and 0.0017 mm/y after quenching, due to a decrease in the Cr-content of the C14 phase.

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“…Cr is known to improve the corrosion resistance of an alloy [35,36]. Samples containing high at% Cr are expected to have low corrosion rates and vice versa.…”

Section: Corrosion Behaviormentioning

confidence: 99%

Hydrogen Storage Characteristics and Corrosion Behavior of V-rich Ti-V-Cr-Fe Alloy

Abdul¹,

Chown²,

Odusote³

et al. 2017

Preprint

View full text Add to dashboard Cite

show abstract

“…The BCC phase enhances hydrogen capacity [11,22,29]; an increase in its unit cell volume implies the availability of more hydrogen absorption sites or spaces, leading to an increase in storage capacity. The Laves phase is detrimental to storage capacity [10,[38][39][40], and alloys with larger Laves unit cell volumes or high Laves proportions are known to exhibit lower hydrogen capacity. Therefore, the observed increase in useful capacity after heat treatment was due to the increase in the BCC unit cell volume.…”

Section: Microstrcuturementioning

confidence: 99%

“…Therefore, an increase in the corrosion rate of heat-treated samples could be a result of a reduction in Cr content in the secondary phase. Cr is known to improve the corrosion resistance of an alloy [40,41]. Samples containing high at % Cr are expected to have low corrosion rates and vice versa.…”

Section: Corrosion Behaviormentioning

confidence: 99%

Hydrogen Storage Characteristics and Corrosion Behavior of Ti24V40Cr34Fe2 Alloy

et al. 2017

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Abstract:In this work, we investigated the effects of heat treatment on the microstructure, hydrogen storage characteristics and corrosion rate of a Ti 34 V 40 Cr 24 Fe 2 alloy. The arc melted alloy was divided into three samples, two of which were separately quartz-sealed under vacuum and heated to 1000 • C for 1 h; one of these samples was quenched and the other furnace-cooled to ambient temperature. The crystal structures of the samples were studied via X-ray diffractometry and scanning electron microscopy. Hydrogenation/dehydrogenation characteristics were investigated using a Sievert apparatus. Potentiostat corrosion tests on the alloys were performed using an AutoLab ® corrosion test apparatus and electrochemical cell. All samples exhibited a major body-center-cubic (BCC) and some secondary phases. An abundance of Laves phases that were found in the as-cast sample reduced with annealing and disappeared in the quenched sample. Beside suppressing Laves phase, annealing also introduced a Ti-rich phase. The corrosion rate, maximum absorption, and useful capacities increased after both heat treatments. The annealed sample had the highest absorption and reversible capacity. The plateau pressure of the as-cast alloy increased after quenching. The corrosion rate increased from 0.0004 mm/y in the as-cast sample to 0.0009 mm/y after annealing and 0.0017 mm/y after quenching.

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“…The figure shows that the zero-current potential is approximately À 565 mV in simulate seawater and that a narrow passive region exists between the zero-current potential and point A of approximately À 350 mV. The corrosion potential (E corr ) and corrosion current density (i corr ) were fitted to be À 578 mV and 0.93 μA cm À 2 , respectively, from the potentiodynamic polarization curve by using the Tafel curve fitting method [20].The E corr is slightly more positive and the i corr is much lower than that of other steels of the same type [21], thus indicating that E690 steel has better corrosion resistance in seawater because of its refined grain size and high alloying element content [22].…”

Section: Potentiodynamic Polarization Curvementioning

confidence: 99%

Effect of cathodic potentials on the SCC behavior of E690 steel in simulated seawater

Wang

et al. 2015

Materials Science and Engineering: A

108

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Effects of Cr, Ni and Cu on the Corrosion Behavior of Low Carbon Microalloying Steel in a Cl− Containing Environment

Cited by 132 publications

References 23 publications

Hydrogen Storage Characteristics and Corrosion Behavior of V-rich Ti-V-Cr-Fe Alloy

Hydrogen Storage Characteristics and Corrosion Behavior of V-rich Ti-V-Cr-Fe Alloy

Hydrogen Storage Characteristics and Corrosion Behavior of Ti24V40Cr34Fe2 Alloy

Effect of cathodic potentials on the SCC behavior of E690 steel in simulated seawater

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