Corrosion characteristics of in situ hybrid (Al3Ni + Al2O3)/Al composites synthesized by the solid-state combustion-Reference-Cited by-同舟云学术

Corrosion characteristics of in situ hybrid (Al₃Ni + Al₂O₃)/Al composites synthesized by the solid-state combustion

Published:2024-03-12 Issue:3 Volume:42 Page:341-354
ISSN:2191-0316
Container-title:Corrosion Reviews
language:en
Short-container-title:

Author:

Xue Jing¹,Yu Xiaojie¹,Yao Mingxiao¹,Su Fei¹,Yang Jin¹,Gong Jianbao¹,Huang Haijun²

Affiliation:

1. School of Materials Science and Engineering , 66323 Shanghai University of Engineering Science , Shanghai 201620 , China

2. School of Materials and Chemistry , 47863 University of Shanghai for Science and Technology , Shanghai 200093 , China

Abstract

Abstract In this study, in situ hybrid (Al3Ni + Al2O3)/Al composites were prepared successfully by the solid-state combustion via Al–NiO system. The effects of Al3Ni + Al2O3 on the corrosion features of composites were analyzed using potentiodynamic polarization, electrochemical impedance spectroscopy, and immersion corrosion in 3.5 wt% NaCl solution. The results show that with the increase of NiO addition, the corrosion resistance of composites is improved, and the corrosion resistance of 15 % NiO–Al composite is almost comparable to the Al matrix. The increased quantity and dispersive distribution of Al3Ni and Al2O3 particles can effectively prevent the occurrence of corrosion and the movement of free electrons. Besides, more fine Al2O3 particles distributed in grain boundaries can increase the impedance and hinder the electrochemical corrosion preferentially starting at the boundary. Also, in the composite with high NiO addition, a better and compact interface bonding can be formed due to reduction of large size Al3Ni particles and improvement in the dispersion of particles, thereby inhibiting interface damage. This study has advanced understanding of corrosion.

Publisher

Walter de Gruyter GmbH

Link

https://www.degruyter.com/document/doi/10.1515/corrrev-2023-0116/pdf

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