Effect of Li Content on Corrosion Resistance of Lithium Carbonate Coating on Mg-Li Alloys

doi:10.12442/j.issn.1002-185X.20220793

Home > Archive>Volume 52, Issue 8, 2023 >2978-2984. DOI:10.12442/j.issn.1002-185X.20220793

Effect of Li Content on Corrosion Resistance of Lithium Carbonate Coating on Mg-Li Alloys
DOI:
                        10.12442/j.issn.1002-185X.20220793
                    
Author:
                        Zhou FanZhou Fan
State Key Laboratory for Mechanical Behavior of Materials,Xi’an Jiaotong University,Xi’an
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Li YuchenLi Yuchen
State Key Laboratory for Mechanical Behavior of Materials,Xi’an Jiaotong University,Xi’an
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Kang ZhenweiKang Zhenwei
State Key Laboratory for Mechanical Behavior of Materials,Xi’an Jiaotong University,Xi’an
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Shen JunShen Jun
State Key Laboratory for Mechanical Behavior of Materials,Xi’an Jiaotong University,Xi’an
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Ren YingRen Ying
State Key Laboratory for Mechanical Behavior of Materials,Xi’an Jiaotong University,Xi’an
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Zhou GenshuZhou Genshu
State Key Laboratory for Mechanical Behavior of Materials,Xi’an Jiaotong University,Xi’an
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Affiliation:State Key Laboratory for Mechanical Behavior of Materials,Xi’an Jiaotong University,Xi’an
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Abstract:

An eco-friendly and high corrosion-resistant lithium carbonate coating was firstly fabricated on LAZ141 by low temperature plasma. To investigate effect of Li content on structure and properties of as-prepared coating, SEM, EDS, EIS and hydrogen evolution test were adopted for characterization and analysis. The results showed that the content of lithium carbonate in coatings were determined by Li content in alloys. A protective layer with a high ratio of Li₂CO₃ can be formed in the coating when the Li content in alloy reaches the value of 10 wt.%. Hydrogen evolution and EIS results in 0.6 M NaCl solution indicate that the protective layer can improve the resistance of coating over two order of magnitude and reduce the hydrogen evolution rate of substrate at least by 3 times.

Key words:Mg-Li alloy; Low temperature plasma; Corrosion resistance; Lithium carbonate

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[Zhou Fan, Li Yuchen, Kang Zhenwei, Shen Jun, Ren Ying, Zhou Genshu. Effect of Li Content on Corrosion Resistance of Lithium Carbonate Coating on Mg-Li Alloys[J]. Rare Metal Materials and Engineering,2023,52(8):2978~2984.]
DOI：10.12442/j. issn.1002-185X.20220793

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Received:October 11,2022
Revised:January 02,2023
Adopted:January 03,2023
Online: August 28,2023
Published: August 24,2023

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