Effects of electrolyte pH on the electrochemical behavior of Fe-based bulk metallic glass

S. L. Wang; H. X. Li; Y. U. Jeong; S. Yi

doi:10.1007/s12540-012-5007-6

Effects of electrolyte pH on the electrochemical behavior of Fe-based bulk metallic glass

S. L. Wang, H. X. Li, Y. U. Jeong, S. Yi

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17 Scopus citations

Abstract

The effects of electrolyte pH on the electrochemical behavior of Fe-based bulk metallic glass with a composition of Fe_68.8C _7.0Si_3.5B₅P_9.6Cr _2.1Mo_2.0Al_2.0 were investigated at an ambient temperature. The results indicate that corrosion behavior is strongly dependent on the pH values. The corrosion current densities and capacitance values decrease with an increase in pH values in acidic electrolytes, while the opposite tendencies are obtained in alkaline electrolytes. While the corrosion product of the outer layer in low pH conditions is an amorphous structure, crystalline ferric oxide is obtained in the electrolyte with pH=14. The electrochemical behavior is discussed on the basis of the results of electrochemical and microstructural analysis.

Original language	English
Pages (from-to)	791-797
Number of pages	7
Journal	Metals and Materials International
Volume	18
Issue number	5
DOIs	https://doi.org/10.1007/s12540-012-5007-6
State	Published - Oct 2012

Keywords

Amorphous materials
Casting
Corrosion
Electrochemisty
SEM

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10.1007/s12540-012-5007-6

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abstract = "The effects of electrolyte pH on the electrochemical behavior of Fe-based bulk metallic glass with a composition of Fe68.8C 7.0Si3.5B5P9.6Cr 2.1Mo2.0Al2.0 were investigated at an ambient temperature. The results indicate that corrosion behavior is strongly dependent on the pH values. The corrosion current densities and capacitance values decrease with an increase in pH values in acidic electrolytes, while the opposite tendencies are obtained in alkaline electrolytes. While the corrosion product of the outer layer in low pH conditions is an amorphous structure, crystalline ferric oxide is obtained in the electrolyte with pH=14. The electrochemical behavior is discussed on the basis of the results of electrochemical and microstructural analysis.",

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T1 - Effects of electrolyte pH on the electrochemical behavior of Fe-based bulk metallic glass

AU - Wang, S. L.

AU - Li, H. X.

AU - Jeong, Y. U.

AU - Yi, S.

PY - 2012/10

Y1 - 2012/10

N2 - The effects of electrolyte pH on the electrochemical behavior of Fe-based bulk metallic glass with a composition of Fe68.8C 7.0Si3.5B5P9.6Cr 2.1Mo2.0Al2.0 were investigated at an ambient temperature. The results indicate that corrosion behavior is strongly dependent on the pH values. The corrosion current densities and capacitance values decrease with an increase in pH values in acidic electrolytes, while the opposite tendencies are obtained in alkaline electrolytes. While the corrosion product of the outer layer in low pH conditions is an amorphous structure, crystalline ferric oxide is obtained in the electrolyte with pH=14. The electrochemical behavior is discussed on the basis of the results of electrochemical and microstructural analysis.

AB - The effects of electrolyte pH on the electrochemical behavior of Fe-based bulk metallic glass with a composition of Fe68.8C 7.0Si3.5B5P9.6Cr 2.1Mo2.0Al2.0 were investigated at an ambient temperature. The results indicate that corrosion behavior is strongly dependent on the pH values. The corrosion current densities and capacitance values decrease with an increase in pH values in acidic electrolytes, while the opposite tendencies are obtained in alkaline electrolytes. While the corrosion product of the outer layer in low pH conditions is an amorphous structure, crystalline ferric oxide is obtained in the electrolyte with pH=14. The electrochemical behavior is discussed on the basis of the results of electrochemical and microstructural analysis.

KW - Amorphous materials

KW - Casting

KW - Corrosion

KW - Electrochemisty

KW - SEM

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VL - 18

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EP - 797

JO - Metals and Materials International

JF - Metals and Materials International

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ER -

Effects of electrolyte pH on the electrochemical behavior of Fe-based bulk metallic glass

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