Electrochemical corrosion and its influence on magnetic properties of Fe75.5Si13.5B9Nb3Cu1 alloy

D. Szewieczek; A. Baron

doi:10.1016/j.jmatprotec.2005.02.084

Electrochemical corrosion and its influence on magnetic properties of Fe_75.5Si_13.5B₉Nb₃Cu₁ alloy

D. Szewieczek, A. Baron^*

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

38 Scopus citations

Abstract

Nanocrystalline soft magnetic materials with low coercivity, high saturation magnetization and high permeability are commonly used as cores in transformers and generators, stress and field sensors in a technological application. The influence of factors connected with a corrosion is almost impossible to eliminate. From this reason the investigations in the direction of knowledge of an electrochemical corrosion mechanism and its influence on magnetic properties of Fe_73.5Si_13.5B₉Nb ₃Cu₁ alloy were performed. In the present work, a comparative study of the electrochemical behaviour of Fe_73.5Si _13.5B₉Nb₃Cu₁ amorphous, amorphous relaxed and nanocrystallized alloy tested in 0.5 M Na₂SO₄ solution, has been performed by means of electrochemical technique: direct current technique (anodic polarization) and alternating current technique (electrochemical impedance spectroscopy). Regardless of structure, the multicomponent alloy Fe_73.5Si_13.5B₉Nb ₃Cu₁ had an ability to passivation in the sulphate solution. Data concerning a corrosion mechanism obtained by the use of electrochemical impedance spectroscopy method (alternating current technique). Dependent on the structure of investigated alloys tested in 0.5 M Na ₂SO₄ solution at the temperature of 20 °C, two electrochemical corrosion mechanisms were distinguished: electron transfer control and mixed electron transfer and mass transport rate control. On the basis of obtained impedance spectra, the equivalent circuit models describing electrochemical corrosion processes of the amorphous, amorphous relaxed and nanocrystalline Fe_73.5Si_13.5B₉Nb ₃Cu₁ alloy and interpretation of equivalent circuit elements was presented. Changes of magnetic properties including coercivity, magnetization were analyzed. These properties were investigated as a function of the produced structure in primary amorphous ribbon and exposure specimens for 15 days in corrosive environment.

Original language	English
Pages (from-to)	940-946
Number of pages	7
Journal	Journal of Materials Processing Technology
Volume	164-165
DOIs	https://doi.org/10.1016/j.jmatprotec.2005.02.084
State	Published - 15 May 2005
Externally published	Yes

Keywords

Amorphous structure
Corrosion mechanism
Electrochemical properties
Fe-based materials
Magnetic properties
Nanocrystalline structure

Access to Document

10.1016/j.jmatprotec.2005.02.084

Cite this

@article{a827d3b111e5400282a962e3bfca5092,

title = "Electrochemical corrosion and its influence on magnetic properties of Fe75.5Si13.5B9Nb3Cu1 alloy",

abstract = "Nanocrystalline soft magnetic materials with low coercivity, high saturation magnetization and high permeability are commonly used as cores in transformers and generators, stress and field sensors in a technological application. The influence of factors connected with a corrosion is almost impossible to eliminate. From this reason the investigations in the direction of knowledge of an electrochemical corrosion mechanism and its influence on magnetic properties of Fe73.5Si13.5B9Nb 3Cu1 alloy were performed. In the present work, a comparative study of the electrochemical behaviour of Fe73.5Si 13.5B9Nb3Cu1 amorphous, amorphous relaxed and nanocrystallized alloy tested in 0.5 M Na2SO4 solution, has been performed by means of electrochemical technique: direct current technique (anodic polarization) and alternating current technique (electrochemical impedance spectroscopy). Regardless of structure, the multicomponent alloy Fe73.5Si13.5B9Nb 3Cu1 had an ability to passivation in the sulphate solution. Data concerning a corrosion mechanism obtained by the use of electrochemical impedance spectroscopy method (alternating current technique). Dependent on the structure of investigated alloys tested in 0.5 M Na 2SO4 solution at the temperature of 20 °C, two electrochemical corrosion mechanisms were distinguished: electron transfer control and mixed electron transfer and mass transport rate control. On the basis of obtained impedance spectra, the equivalent circuit models describing electrochemical corrosion processes of the amorphous, amorphous relaxed and nanocrystalline Fe73.5Si13.5B9Nb 3Cu1 alloy and interpretation of equivalent circuit elements was presented. Changes of magnetic properties including coercivity, magnetization were analyzed. These properties were investigated as a function of the produced structure in primary amorphous ribbon and exposure specimens for 15 days in corrosive environment.",

keywords = "Amorphous structure, Corrosion mechanism, Electrochemical properties, Fe-based materials, Magnetic properties, Nanocrystalline structure",

author = "D. Szewieczek and A. Baron",

year = "2005",

month = may,

day = "15",

doi = "10.1016/j.jmatprotec.2005.02.084",

language = "英语",

volume = "164-165",

pages = "940--946",

journal = "Journal of Materials Processing Technology",

issn = "0924-0136",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Electrochemical corrosion and its influence on magnetic properties of Fe75.5Si13.5B9Nb3Cu1 alloy

AU - Szewieczek, D.

AU - Baron, A.

PY - 2005/5/15

Y1 - 2005/5/15

N2 - Nanocrystalline soft magnetic materials with low coercivity, high saturation magnetization and high permeability are commonly used as cores in transformers and generators, stress and field sensors in a technological application. The influence of factors connected with a corrosion is almost impossible to eliminate. From this reason the investigations in the direction of knowledge of an electrochemical corrosion mechanism and its influence on magnetic properties of Fe73.5Si13.5B9Nb 3Cu1 alloy were performed. In the present work, a comparative study of the electrochemical behaviour of Fe73.5Si 13.5B9Nb3Cu1 amorphous, amorphous relaxed and nanocrystallized alloy tested in 0.5 M Na2SO4 solution, has been performed by means of electrochemical technique: direct current technique (anodic polarization) and alternating current technique (electrochemical impedance spectroscopy). Regardless of structure, the multicomponent alloy Fe73.5Si13.5B9Nb 3Cu1 had an ability to passivation in the sulphate solution. Data concerning a corrosion mechanism obtained by the use of electrochemical impedance spectroscopy method (alternating current technique). Dependent on the structure of investigated alloys tested in 0.5 M Na 2SO4 solution at the temperature of 20 °C, two electrochemical corrosion mechanisms were distinguished: electron transfer control and mixed electron transfer and mass transport rate control. On the basis of obtained impedance spectra, the equivalent circuit models describing electrochemical corrosion processes of the amorphous, amorphous relaxed and nanocrystalline Fe73.5Si13.5B9Nb 3Cu1 alloy and interpretation of equivalent circuit elements was presented. Changes of magnetic properties including coercivity, magnetization were analyzed. These properties were investigated as a function of the produced structure in primary amorphous ribbon and exposure specimens for 15 days in corrosive environment.

AB - Nanocrystalline soft magnetic materials with low coercivity, high saturation magnetization and high permeability are commonly used as cores in transformers and generators, stress and field sensors in a technological application. The influence of factors connected with a corrosion is almost impossible to eliminate. From this reason the investigations in the direction of knowledge of an electrochemical corrosion mechanism and its influence on magnetic properties of Fe73.5Si13.5B9Nb 3Cu1 alloy were performed. In the present work, a comparative study of the electrochemical behaviour of Fe73.5Si 13.5B9Nb3Cu1 amorphous, amorphous relaxed and nanocrystallized alloy tested in 0.5 M Na2SO4 solution, has been performed by means of electrochemical technique: direct current technique (anodic polarization) and alternating current technique (electrochemical impedance spectroscopy). Regardless of structure, the multicomponent alloy Fe73.5Si13.5B9Nb 3Cu1 had an ability to passivation in the sulphate solution. Data concerning a corrosion mechanism obtained by the use of electrochemical impedance spectroscopy method (alternating current technique). Dependent on the structure of investigated alloys tested in 0.5 M Na 2SO4 solution at the temperature of 20 °C, two electrochemical corrosion mechanisms were distinguished: electron transfer control and mixed electron transfer and mass transport rate control. On the basis of obtained impedance spectra, the equivalent circuit models describing electrochemical corrosion processes of the amorphous, amorphous relaxed and nanocrystalline Fe73.5Si13.5B9Nb 3Cu1 alloy and interpretation of equivalent circuit elements was presented. Changes of magnetic properties including coercivity, magnetization were analyzed. These properties were investigated as a function of the produced structure in primary amorphous ribbon and exposure specimens for 15 days in corrosive environment.

KW - Amorphous structure

KW - Corrosion mechanism

KW - Electrochemical properties

KW - Fe-based materials

KW - Magnetic properties

KW - Nanocrystalline structure

UR - http://www.scopus.com/inward/record.url?scp=17844407651&partnerID=8YFLogxK

U2 - 10.1016/j.jmatprotec.2005.02.084

DO - 10.1016/j.jmatprotec.2005.02.084

M3 - 会议文章

AN - SCOPUS:17844407651

SN - 0924-0136

VL - 164-165

SP - 940

EP - 946

JO - Journal of Materials Processing Technology

JF - Journal of Materials Processing Technology

ER -

Electrochemical corrosion and its influence on magnetic properties of Fe_75.5Si_13.5B₉Nb₃Cu₁ alloy

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this