Initial formation of corrosion products on pure zinc in saline solution

Yao Meng; Lijun Liu; Dawei Zhang; Chaofang Dong; Yu Yan; Alex A Volinsky; Lu-Ning Wang

doi:10.1016/j.bioactmat.2018.08.003

Initial formation of corrosion products on pure zinc in saline solution

Bioact Mater. 2018 Oct 11;4(1):87-96. doi: 10.1016/j.bioactmat.2018.08.003. eCollection 2019 Mar.

Authors

Yao Meng¹, Lijun Liu¹, Dawei Zhang², Chaofang Dong^{2

3}, Yu Yan², Alex A Volinsky⁴, Lu-Ning Wang^{1

3}

Affiliations

¹ Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
² Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China.
³ State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, 100083, China.
⁴ Department of Mechanical Engineering, University of South Florida, Tampa, FL, 33620, USA.

Abstract

Corrosion product formed on zinc sample during 2 weeks immersion in saline solution has been investigated. The corrosion layer morphology as well as its chemical composition, was analyzed using scanning electron microscopy (SEM), x-ray diffraction (XRD), x-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR). Electrochemical measurement was used to analyze the corrosion behavior. Zinc oxide, zinc hydroxide and zinc hydroxide chloride were formed on zinc surface in saline solution. The thickness of corrosion layer increased with the time increased. The pure Zn has an estimated corrosion rate of 0.063 mm y^-1 after immersion for 336 h. Probable mechanisms of zinc corrosion products formation are presented.

Keywords: Corrosion products; Degradation; Saline; Zinc.