Effect of thermo-mechanical treatments on corrosion behavior of Cu-15Ni-8Sn alloy in 3.5 wt% NaCl solution



Zhang, Yang, Xiao, Zhu, Zhao, Yuyuan ORCID: 0000-0003-2356-8435, Li, Zhou, Xing, Yan and Zhou, Kechao
(2017) Effect of thermo-mechanical treatments on corrosion behavior of Cu-15Ni-8Sn alloy in 3.5 wt% NaCl solution. MATERIALS CHEMISTRY AND PHYSICS, 199. pp. 54-66.

[thumbnail of 2017_MCP_corrosion_accepted.pdf] Text
2017_MCP_corrosion_accepted.pdf - Author Accepted Manuscript

Download (5MB)

Abstract

The microstructure and corrosion behavior of the Cu-15Ni-8Sn-1.0Zn- 0.8Al-02Si alloy treated with different thermo-mechanical processes in 3.5 wt% NaCl solution was investigated by electrochemical test, electron microscopy and XPS analysis. Compared with single-stage thermo-mechanical treatment (cold rolling by 60% reduction and then aging at 450 °C for 0.5 h), the alloy with two-stage treatment (pre-aging at 400 °C for 0.5 h, cold rolling by 60% reduction and then aging at 450 °C for 0.5 h) had finer ordered precipitates and less coarse, discontinuous precipitates, resulting in better corrosion resistance performance. The corrosion product layer was mainly a mixture of Cu2O, CuO, NiO, Ni(OH)2, SnO, SnO2, ZnO and Al2O3, with a transition from Cu2O to CuO and Cu(OH)2 occurring during the corrosion process.

Item Type: Article
Additional Information: publisher: Elsevier articletitle: Effect of thermo-mechanical treatments on corrosion behavior of Cu-15Ni-8Sn alloy in 3.5 wt% NaCl solution journaltitle: Materials Chemistry and Physics articlelink: http://dx.doi.org/10.1016/j.matchemphys.2017.06.041 content_type: article copyright: © 2017 Elsevier B.V. All rights reserved.
Uncontrolled Keywords: Alloy, Polarization, XPS, Thermo-mechanical treatments
Depositing User: Symplectic Admin
Date Deposited: 02 Aug 2017 09:07
Last Modified: 19 Jan 2023 06:58
DOI: 10.1016/j.matchemphys.2017.06.041
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3008632