THE CORROSION EFFECT of CuO and ZnO FORMATIONS ON BRASS SURFACE
Abstract
The elements on the bulk brass surface were oxidized at high temperatures (from 200 °C to 700 °C). Before the annealing process, the samples were cold rolled to reduce its thickness. The specimens were held under different temperatures in the furnace for the same duration (45 minutes). This paper examines the corrosion of brass having an oxide surface obtained by heat treatment. The corrosion rate experiments were conducted by the cyclic polarization method by means of a potentiostat. The corrosion test of the specimens was conducted by scanning the electrodes in saline water (3.5% NaCl solution) at the scan rate of 2 mV s-1. The corrosion behavior of the electrodes was investigated by two subsequent scans. The change of the heated brass surface occurring after the corrosions test were investigated. While the corrosion rate of the non-annealed brass electrode was similar to that of annealed specimens for the first scan, the corrosion rate of heat-treated specimens was dramatically decreased for the second scan. Pitting corrosion of non-heated brass and passivation behavior of heated brass electrodes were observed. Therefore, heat-treatment of brass can cause higher corrosion resistivity of the brass surface.
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References
- 1. Verma C, Ebenso EE, Quraishi MA. Ionic liquids as green and sustainable corrosion inhibitors for metals and alloys: an overview. J Mol Liq. 2017;233:403–14.
- 2. Güleryüz H, Çimenoğlu H. Effect of thermal oxidation on corrosion and corrosion–wear behaviour of a Ti–6Al–4V alloy. Biomaterials. 2004;25(16):3325–33.
- 3. Indra A, Menezes PW, Zaharieva I, Baktash E, Pfrommer J, Schwarze M, et al. Active Mixed‐Valent MnOx Water Oxidation Catalysts through Partial Oxidation (Corrosion) of Nanostructured MnO Particles. Angew Chemie Int Ed. 2013;52(50):13206–10.
- 4. Gu B, Luo J, Mao X. Hydrogen-facilitated anodic dissolution-type stress corrosion cracking of pipeline steels in near-neutral pH solution. Corrosion. 1999;55(1):96–106.
- 5. A titanium-doped SiOx passivation layer for greatly enhanced performance of a hematite-based photoelectrochemical system. Angew Chem, Int Ed. 2016;55:9922. 6. Kihira H, Ito S, Murata T. The behavior of phosphorous during passivation of wefile:///C:/Users/Furkan/Downloads/scholar (90).risathering steel by protective patina formation. Corros Sci. 1990;31:383–8.
- 7. Jin K, Sales BC, Stocks GM, Samolyuk GD, Daene M, Weber WJ, et al. Tailoring the physical properties of Ni-based single-phase equiatomic alloys by modifying the chemical complexity. Sci Rep. 2016;6:20159.
- 8. Sandström R. An approach to systematic materials selection. Mater Des. 1985;6(6):328–38.
- 9. Chen S, Brown L, Levendorf M, Cai W, Ju S-Y, Edgeworth J, et al. Oxidation resistance of graphene-coated Cu and Cu/Ni alloy. ACS Nano. 2011;5(2):1321–7.
- 10. Walter B. Process for manufacturing brass and bronze alloys containing lead. Google Patents; 1957.
- 11. Ravichandran R, Rajendran N. Electrochemical behaviour of brass in artificial seawater: effect of organic inhibitors. Appl Surf Sci. 2005;241(3–4):449–58.
