Effect of carbon nanotubes on microstructure and corrosion resistance of PEO ceramic coating of magnesium alloy-Reference-Cited by-同舟云学术

Effect of carbon nanotubes on microstructure and corrosion resistance of PEO ceramic coating of magnesium alloy

Published:2021-12-10 Issue:1 Volume:40 Page:77-85
ISSN:2191-0316
Container-title:Corrosion Reviews
language:en
Short-container-title:

Author:

Ma Qun¹,Wang Ping²,Chen Xiaomin³,Zhang Chunqing⁴

Affiliation:

1. Northwest Institutes of Advanced Technology, Xi’an Technological University , Xi’an 710021 , China

2. School of Materials and Chemical Engineering, Xi’an Technological University , Xi’an 710021 , China

3. Xi’an Electronic Engineering Research Institute , Xi’an 710100 , China

4. Department of Mechanical Engineering , Chengde Petroleum College , Chengde 067000 , China

Abstract

Abstract Plasma electrolytic oxidation (PEO) ceramic coating modified by carbon nanotubes (CNTs) was prepared on Mg–Gd–Y alloy. The microstructure, hydrophobicity and corrosion resistance of the coating were investigated by SEM, contact angle meter and electrochemical test system. Carbon nanotubes (CNTs) are staggered in the ceramic coating and partially filled with plasma discharge micropores. To some extent, CNTs can promote the plasma discharge and improve the film formation rate. With the increase of the content of CNTs, the content of carbon nanotubes in the ceramic coating increases. CNTs can effectively improve the hydrophobicity of ceramic coating. With the increase of the content of CNTs, the corrosion potential E coor and polarization resistance R p increase, the corrosion current i coor decreases and the AC impedance |Z| increases, which leads to the decrease of corrosion rate.

Publisher

Walter de Gruyter GmbH

Subject

General Materials Science,General Chemical Engineering,General Chemistry

Link

https://www.degruyter.com/document/doi/10.1515/corrrev-2020-0055/pdf

Reference23 articles.

1. Acheson, J.G., McKillop, S., Lemoine, P., Boyd, A.R., and Meenan, B.J. (2019). Control of magnesium alloy corrosion by bioactive calcium phosphate coating: implications for resorbable orthopaedic implants. Materialia 6: 100291, https://doi.org/10.1016/j.mtla.2019.100291.

2. Bai, L.J., Kou, G., Zhao, K., Chen, G.T., and Yan, F.X. (2020). Effect of in-situ micro-arc oxidation coating on the galvanic corrosion of AZ31Mg coupled to aluminum alloys. J. Alloys Compd. 775: 1077–1085.

3. Cui, L.Y., Liu, H.P., Zhang, W.L., Han, Z.Z., and Deng, M.X. (2017). Corrosion resistance of a superhydrophobic micro-arc oxidation coating on Mg–4Li–1Ca alloy. J. Mater. Sci. Technol. 33: 1263–1271, https://doi.org/10.1016/j.jmst.2017.10.010.

4. Dou, J.H., Gu, G.C., and Chen, C.Z. (2017). Effects of calcium salts on microstructure and corrosion behavior of micro-arc oxidation coatings on Mg–2Zn–1Ca–0.8 Mn alloy. Mater. Lett. 196: 42–45, https://doi.org/10.1016/j.matlet.2017.03.028.

5. Gao, F., Hu, Y.D., Li, G.C., Liu, S., and Pan, C.J. (2020). Layer-by-layer deposition of bioactive layers on magnesium alloy stent materials to improve corrosion resistance and biocompatibility. Bioactive Mater. 5: 611–623, https://doi.org/10.1016/j.bioactmat.2020.04.016.

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