Corrosion behavior of ultrafine-grained copper processed by equal channel angular pressing in simulated sea water

Daoshuan Yang; Yuecheng Dong; Hui Chang; Igor Alexandrov; Feng Li; Jingtao Wang; Zhenhua Dan

doi:10.1002/maco.201810165

Corrosion behavior of ultrafine-grained copper processed by equal channel angular pressing in simulated sea water

Daoshuan Yang, Yuecheng Dong, Hui Chang, Igor Alexandrov, Feng Li, Jingtao Wang, Zhenhua Dan

College of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

The corrosion behavior of copper fabricated by equal channel angular pressing and further annealing was systematically investigated in 3.5 wt% NaCl solution using potentiodynamic polarization, electrochemical impedance spectroscopy, and weight loss method. Microstructure and corroded surface morphologies were observed by electron backscattered diffraction and scanning electron microscopy, respectively. Results indicated that ultrafine-grained copper had much lower corrosion current density and corrosion rate than annealed coarse-grained counterparts. Transition from uniform to intergranular mode of corrosion happened, which can be attributed to the dominance of two times larger volume fraction of high angle grain boundaries formed during annealing process.

Original language	English
Pages (from-to)	1455-1461
Number of pages	7
Journal	Materials and Corrosion
Volume	69
Issue number	10
DOIs	https://doi.org/10.1002/maco.201810165
State	Published - Oct 2018

Keywords

corrosion behavior
equal channel angular pressing
grain boundary character distribution
ultrafine-grained copper

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10.1002/maco.201810165

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title = "Corrosion behavior of ultrafine-grained copper processed by equal channel angular pressing in simulated sea water",

abstract = "The corrosion behavior of copper fabricated by equal channel angular pressing and further annealing was systematically investigated in 3.5 wt% NaCl solution using potentiodynamic polarization, electrochemical impedance spectroscopy, and weight loss method. Microstructure and corroded surface morphologies were observed by electron backscattered diffraction and scanning electron microscopy, respectively. Results indicated that ultrafine-grained copper had much lower corrosion current density and corrosion rate than annealed coarse-grained counterparts. Transition from uniform to intergranular mode of corrosion happened, which can be attributed to the dominance of two times larger volume fraction of high angle grain boundaries formed during annealing process.",

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author = "Daoshuan Yang and Yuecheng Dong and Hui Chang and Igor Alexandrov and Feng Li and Jingtao Wang and Zhenhua Dan",

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T1 - Corrosion behavior of ultrafine-grained copper processed by equal channel angular pressing in simulated sea water

AU - Yang, Daoshuan

AU - Dong, Yuecheng

AU - Chang, Hui

AU - Alexandrov, Igor

AU - Li, Feng

AU - Wang, Jingtao

AU - Dan, Zhenhua

PY - 2018/10

Y1 - 2018/10

N2 - The corrosion behavior of copper fabricated by equal channel angular pressing and further annealing was systematically investigated in 3.5 wt% NaCl solution using potentiodynamic polarization, electrochemical impedance spectroscopy, and weight loss method. Microstructure and corroded surface morphologies were observed by electron backscattered diffraction and scanning electron microscopy, respectively. Results indicated that ultrafine-grained copper had much lower corrosion current density and corrosion rate than annealed coarse-grained counterparts. Transition from uniform to intergranular mode of corrosion happened, which can be attributed to the dominance of two times larger volume fraction of high angle grain boundaries formed during annealing process.

AB - The corrosion behavior of copper fabricated by equal channel angular pressing and further annealing was systematically investigated in 3.5 wt% NaCl solution using potentiodynamic polarization, electrochemical impedance spectroscopy, and weight loss method. Microstructure and corroded surface morphologies were observed by electron backscattered diffraction and scanning electron microscopy, respectively. Results indicated that ultrafine-grained copper had much lower corrosion current density and corrosion rate than annealed coarse-grained counterparts. Transition from uniform to intergranular mode of corrosion happened, which can be attributed to the dominance of two times larger volume fraction of high angle grain boundaries formed during annealing process.

KW - corrosion behavior

KW - equal channel angular pressing

KW - grain boundary character distribution

KW - ultrafine-grained copper

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SP - 1455

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JO - Materials and Corrosion

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ER -

Corrosion behavior of ultrafine-grained copper processed by equal channel angular pressing in simulated sea water

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