Corrosion and Electrochemical Properties of Zr56Cu19Ni11Al9Nb5 Amorphous Alloy in HCl Solutions

Zhang Zhiying; Sun Lei; Yue Shumin; Yu Hongliang; Shen Xin

doi:10.15980/j.tzzz.2021.04.004

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Corrosion and Electrochemical Properties of Zr₅₆Cu₁₉Ni₁₁Al₉Nb₅ Amorphous Alloy in HCl Solutions
Vol. 41, Issue 4, Pages: 410-415(2021)
Published： 2021 ，
DOI： 10.15980/j.tzzz.2021.04.004

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[1]张志英,孙磊,岳姝敏,余洪良,沈欣.Zr_(56)Cu_(19)Ni_(11)Al_9Nb_5非晶合金在HCl溶液中的腐蚀和电化学性能[J].特种铸造及有色合金,2021,41(04):410-415.

Zhang Zhiying, Sun Lei, Yue Shumin, et al. Corrosion and Electrochemical Properties of Zr₅₆Cu₁₉Ni₁₁Al₉Nb₅ Amorphous Alloy in HCl Solutions. [J]. Special Casting & Nonferrous Alloys 41(4):410-415(2021)
[1]张志英,孙磊,岳姝敏,余洪良,沈欣.Zr_(56)Cu_(19)Ni_(11)Al_9Nb_5非晶合金在HCl溶液中的腐蚀和电化学性能[J].特种铸造及有色合金,2021,41(04):410-415. DOI： 10.15980/j.tzzz.2021.04.004.

Zhang Zhiying, Sun Lei, Yue Shumin, et al. Corrosion and Electrochemical Properties of Zr₅₆Cu₁₉Ni₁₁Al₉Nb₅ Amorphous Alloy in HCl Solutions. [J]. Special Casting & Nonferrous Alloys 41(4):410-415(2021) DOI： 10.15980/j.tzzz.2021.04.004.

摘要

通过浸泡法、动电位极化法、扫描电镜、能谱分析等研究了Zr

非晶合金试样在不同浓度HCl溶液中的腐蚀和电化学性能。浸泡试验结果表明

非晶合金试样分别在0.01、0.1和1mol/L的HCl溶液中浸泡2 256h以及在2mol/L HCl溶液中浸泡720h后均未发现明显腐蚀

显示良好的耐腐蚀性。随着HCl溶液浓度进一步增加

非晶合金耐腐蚀性变差。在5mol/L HCl溶液中浸泡168h后腐蚀严重。动电位极化测试表明

随着HCl浓度增加

自腐蚀电位逐渐降低

从0.402V（vs.SCE）逐渐降低到-0.245V（vs.SCE）

腐蚀电流密度逐渐增大

从5.212×10

-8

A/cm

增加至6.095×10

-5

A/cm

耐腐蚀性逐渐变差

与浸泡试验结果一致。扫描电镜、能谱分析表明腐蚀产物主要为ZrO

、Cu

O等氧化物。

Abstract

The corrosion and electrochemical properties of Zr

amorphous alloy in various HCl solutions were investigated using immersion tests

potentiodynamic polarization tests

scanning electron microscopy（SEM）and energy dispersive X-ray spectroscopy（EDS）.Immersion tests reveal that absence of significant corrosion is observed after immersion in 0.01

0.1and 1mol/L HCl solutions for 2 256hand in 2mol/L HCl solution for 720h

presenting the acceptable corrosion resistance.The corrosion resistance is decreased with the increase of HCl concentration

and severe corrosion occurs after immersion in 5 mol/L HCl solution for 168h.Potentiodynamic polarization tests demostrate that the spontaneous corrosion potential E

corr

is dropped gradually from 0.402V （vs.SCE）to-0.245V （vs.SCE）

with the corrosion current density j

corr

increased gradually from 5.212×10

-8

A/cm

to 6.095×10

-5

A/cm

showing that the corrosion resistance is gradually deteriorated

which is consistent with the result of immersion test.SEM/EDS analysis indicates that the corrosion products are mainly oxides