Effect of Zn on corrosion properties of homogenized Mg-3Sn-Ca magnesium alloy

doi:10.12442/j.issn.1002-185X.20211157

Home > Archive>Volume 52, Issue 2, 2023 >568-574. DOI:10.12442/j.issn.1002-185X.20211157

Effect of Zn on corrosion properties of homogenized Mg-3Sn-Ca magnesium alloy
DOI:
                        10.12442/j.issn.1002-185X.20211157
                    
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                        Jia ZhengJia Zheng
School of Mechanical Engineering,Shenyang University
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Yu BingYu Bing
School of Mechanical Engineering,Shenyang University
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Fu LiFu Li
School of Mechanical Engineering,Shenyang University
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Affiliation:School of Mechanical Engineering,Shenyang University
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Abstract:

Effect of Zn on the corrosion properties of homogenized Mg-3Sn-Ca alloy was investigated in this paper. The second phase is composed of CaMgSn and Mg₂Sn in the Mg-3Sn-Ca alloy. The grains are significantly refined by the addition of Zn. The volume fraction of the second phases increase and exist dispersed distribution. Mg₂Ca phase is precipitated. In addition, the corrosion rate of Mg-3Sn-Ca(TX31)and Mg-3Sn-Ca-Zn(TXZ311)alloys were analyzed by immersion and hydrogen evolution test. The corrosion resistance of TX31 and TXZ311 alloys was analyzed by electrochemical polarization curves and impedance spectroscopy. The results show that TXZ311 alloy has smaller grain size, more uniform distribution CaMgSn phases and more dense corrosion film, which cause the higher corrosion resistance of TZX311 alloy.

Key words:Mg-3Sn-Ca alloy; Mg-3Sn-Ca-Zn alloy; homogenization; CaMgSn phase; corrosion properties

Reference

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[Jia Zheng, Yu Bing, Fu Li. Effect of Zn on corrosion properties of homogenized Mg-3Sn-Ca magnesium alloy[J]. Rare Metal Materials and Engineering,2023,52(2):568~574.]
DOI：10.12442/j. issn.1002-185X.20211157

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Received:December 31,2021
Revised:March 01,2022
Adopted:March 10,2022
Online: March 09,2023
Published: February 28,2023

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