铬质量分数不同钢在硝酸熔盐中的电化学腐蚀行为

Xue Wen Zhang; Hong Chuan Li; Sheng Yun Li; Wei Wei Xue; Kun Liu; Dao Peng Yang; Jian Qun Tang; Jian Ming Gong

doi:10.3969/j.issn.1000-7466.2019.02.003

铬质量分数不同钢在硝酸熔盐中的电化学腐蚀行为

Translated title of the contribution: Electrochemical Corrosion Behavior of Steels with Different Chromium Mass Fraction in Molten Nitrate Salt Environment

Xue Wen Zhang, Hong Chuan Li, Sheng Yun Li, Wei Wei Xue, Kun Liu, Dao Peng Yang, Jian Qun Tang, Jian Ming Gong

School of Mechanical and Power Engineering

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

Abstract

The polarization curves of ASTM A36, 2.25Cr1Mo and T91 steel were studied by three-electrode system in molten nitrate salt environment at 400℃ respectively. The electrochemical impedance spectroscopies of the three steels with different Cr mass fraction were studied by two-electrode system in molten nitrate salt. The results show that the corrosion rate of steels decreases with the increasing of Cr mass fraction in steels and the corrosion current densities of these three steels are 8.42 mA/cm ² , 5.37 mA/cm ² , and 3.54 mA/cm ² respectively. The results of the electrochemical impedance tests show that the charge transfer resistance of these three steels in molten nitrate salt are in descending order of T91>2.25Cr1Mo>ASTM A36 steel. During the Cr mass fraction of the steel increasing, the charge transfer resistance increases with the resistance of the steels increasing.

Translated title of the contribution	Electrochemical Corrosion Behavior of Steels with Different Chromium Mass Fraction in Molten Nitrate Salt Environment
Original language	Chinese (Traditional)
Pages (from-to)	12-17
Number of pages	6
Journal	Petrochemical Equipment
Volume	48
Issue number	2
DOIs	https://doi.org/10.3969/j.issn.1000-7466.2019.02.003
State	Published - 25 Mar 2019

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@article{9805c68744514998b7ebc16781743ffe,

title = "铬质量分数不同钢在硝酸熔盐中的电化学腐蚀行为",

abstract = " The polarization curves of ASTM A36, 2.25Cr1Mo and T91 steel were studied by three-electrode system in molten nitrate salt environment at 400℃ respectively. The electrochemical impedance spectroscopies of the three steels with different Cr mass fraction were studied by two-electrode system in molten nitrate salt. The results show that the corrosion rate of steels decreases with the increasing of Cr mass fraction in steels and the corrosion current densities of these three steels are 8.42 mA/cm 2 , 5.37 mA/cm 2 , and 3.54 mA/cm 2 respectively. The results of the electrochemical impedance tests show that the charge transfer resistance of these three steels in molten nitrate salt are in descending order of T91>2.25Cr1Mo>ASTM A36 steel. During the Cr mass fraction of the steel increasing, the charge transfer resistance increases with the resistance of the steels increasing.",

keywords = "Chromium, Corrosion, Electrochemistry, Experimental research, Molten nitrate salt, Steel",

author = "Zhang, {Xue Wen} and Li, {Hong Chuan} and Li, {Sheng Yun} and Xue, {Wei Wei} and Kun Liu and Yang, {Dao Peng} and Tang, {Jian Qun} and Gong, {Jian Ming}",

year = "2019",

month = mar,

day = "25",

doi = "10.3969/j.issn.1000-7466.2019.02.003",

language = "繁体中文",

volume = "48",

pages = "12--17",

journal = "Petrochemical Equipment",

issn = "1000-7466",

publisher = "Lanzhou Petroleum Machinery Research Institute",

number = "2",

}

TY - JOUR

T1 - 铬质量分数不同钢在硝酸熔盐中的电化学腐蚀行为

AU - Zhang, Xue Wen

AU - Li, Hong Chuan

AU - Li, Sheng Yun

AU - Xue, Wei Wei

AU - Liu, Kun

AU - Yang, Dao Peng

AU - Tang, Jian Qun

AU - Gong, Jian Ming

PY - 2019/3/25

Y1 - 2019/3/25

N2 - The polarization curves of ASTM A36, 2.25Cr1Mo and T91 steel were studied by three-electrode system in molten nitrate salt environment at 400℃ respectively. The electrochemical impedance spectroscopies of the three steels with different Cr mass fraction were studied by two-electrode system in molten nitrate salt. The results show that the corrosion rate of steels decreases with the increasing of Cr mass fraction in steels and the corrosion current densities of these three steels are 8.42 mA/cm 2 , 5.37 mA/cm 2 , and 3.54 mA/cm 2 respectively. The results of the electrochemical impedance tests show that the charge transfer resistance of these three steels in molten nitrate salt are in descending order of T91>2.25Cr1Mo>ASTM A36 steel. During the Cr mass fraction of the steel increasing, the charge transfer resistance increases with the resistance of the steels increasing.

AB - The polarization curves of ASTM A36, 2.25Cr1Mo and T91 steel were studied by three-electrode system in molten nitrate salt environment at 400℃ respectively. The electrochemical impedance spectroscopies of the three steels with different Cr mass fraction were studied by two-electrode system in molten nitrate salt. The results show that the corrosion rate of steels decreases with the increasing of Cr mass fraction in steels and the corrosion current densities of these three steels are 8.42 mA/cm 2 , 5.37 mA/cm 2 , and 3.54 mA/cm 2 respectively. The results of the electrochemical impedance tests show that the charge transfer resistance of these three steels in molten nitrate salt are in descending order of T91>2.25Cr1Mo>ASTM A36 steel. During the Cr mass fraction of the steel increasing, the charge transfer resistance increases with the resistance of the steels increasing.

KW - Chromium

KW - Corrosion

KW - Electrochemistry

KW - Experimental research

KW - Molten nitrate salt

KW - Steel

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U2 - 10.3969/j.issn.1000-7466.2019.02.003

DO - 10.3969/j.issn.1000-7466.2019.02.003

M3 - 文章

AN - SCOPUS:85063663357

SN - 1000-7466

VL - 48

SP - 12

EP - 17

JO - Petrochemical Equipment

JF - Petrochemical Equipment

IS - 2

ER -

铬质量分数不同钢在硝酸熔盐中的电化学腐蚀行为

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