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Effect of Al on Corrosion Behavior of Imitation-Gold Cu-Zn-Ni-Sn Alloys in 3.5 wt.% NaCl solution
- Source :
- JOM. 73:589-599
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- The corrosion behavior of imitation-gold Cu-Zn-Ni-Sn alloys with and without Al was investigated by means of color difference testing, static corrosion measurements, scanning electron microscopy analysis, electrochemical impedance measurements, and x-ray photoelectron spectroscopy analysis. The results showed that aluminum inhibited dissolution of Zn and Sn by the formation of an oxide film on the surface of the Cu-Zn-Ni-Sn alloy during corrosion, effectively improving its corrosion resistance. A transition of the corrosion product from Cu2O and Cu(OH)2 to CuO occurred on the surface of Cu-Zn-Ni-Sn-Al alloy, and the corrosion rate of the alloy decreased with increasing corrosion time due to the formation of the oxidation film and the hydrophobic effect of Zn5(CO3)2(OH)6 in the product layer.
- Subjects :
- Materials science
Scanning electron microscope
Alloy
0211 other engineering and technologies
General Engineering
Oxide
chemistry.chemical_element
02 engineering and technology
engineering.material
021001 nanoscience & nanotechnology
Electrochemistry
Corrosion
chemistry.chemical_compound
X-ray photoelectron spectroscopy
chemistry
Aluminium
engineering
General Materials Science
0210 nano-technology
Dissolution
021102 mining & metallurgy
Nuclear chemistry
Subjects
Details
- ISSN :
- 15431851 and 10474838
- Volume :
- 73
- Database :
- OpenAIRE
- Journal :
- JOM
- Accession number :
- edsair.doi...........a323fdb94b04a2bf3ef7a57a66f9ab9e