Improving corrosion resistance of carbonyl iron powders by plasma electrolytic deposition

Yongfu Zhang; Aiming Bu; Yan Xiang; Yunjie Yang; Weiwei Chen; Huanwu Cheng; Lu Wang

Materials & Design (Mar 2020)

Improving corrosion resistance of carbonyl iron powders by plasma electrolytic deposition

Yongfu Zhang,
Aiming Bu,
Yan Xiang,
Yunjie Yang,
Weiwei Chen,
Huanwu Cheng,
Lu Wang

Affiliations

Yongfu Zhang: Department of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
Aiming Bu: Department of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
Yan Xiang: Department of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
Yunjie Yang: Department of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
Weiwei Chen: Corresponding author.; Department of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
Huanwu Cheng: Department of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
Lu Wang: Department of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China

Journal volume & issue: Vol. 188

Abstract

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A coating was prepared on the carbonyl iron powders by plasma electrolytic deposition to improve its corrosion resistance. SiO2 was uniformly coated with the thickness of ~10 nm. The composite powders exhibited superior corrosion resistance in both the NaCl and HCl solutions. The formation of the coating was the result of the electro-chemical absorption and reaction in the electrical field. The aqueous plasma had an important role in activating the surface and optimizing the microstructure of the coating. The superior corrosion resistance makes it available to be used in special environments and has greatly expanded its application fields. Keywords: Carbonyl iron powders, CIP/SiO2, SiO2 coating, Corrosion resistance

Published in Materials & Design

ISSN: 0264-1275 (Print); 1873-4197 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/materials-and-design

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