Izvorni znanstveni članak
https://doi.org/10.5599/jese.429
Electrochemical evaluation of corrosion resistance of chromium plated nickel and copper tin alloys. A comparative study
Chike F. Oduoza
; Faculty of Science and Engineering, University of Wolverhampton, WV11LY, UK
Stacey Hingley
; Faculty of Science and Engineering, University of Wolverhampton, WV11LY, UK
Sažetak
Engineering materials and composites are frequently exposed to aggressive and
chemically toxic environments with high probability for rapid corrosion and consequent
deterioration and catastrophic degradation. Occasionally, a new legislation regulates
against the use of existing materials, necessitating the development of new methodologies
or new materials in order to reduce material corrosion rates. The aim of this study
is to test the corrosion resistance of the copper tin alloy, a material that could replace
nickel compounds, recently reclassified as suspected carcinogens. Standard sizes of precut
nickel and brass panels were produced and then plated with different thicknesses of
copper tin alloy and chromium for additional protection. Evaluation of plated materials
for corrosion rate and resistance was carried out using linear polarisation, electrochemical
impedance and accelerated destructive testing. Corrosion testing of the materials
assessed qualitatively and quantitatively, showed that corrosion resistance was
dependent on a combination of factors, including the thickness of chromium plating, type
of material, type of testing and duration in a corrosion chamber. While linear polarisation
experiment was useful in establishing corrosion rate of sample, electrochemical
impedance and accelerated destructive testing experiments assessed corrosion resistance
of the materials.
Ključne riječi
Nickel, Copper-tin alloy deposit; Chromium deposit; Corrosion resistance; Corrosion testing
Hrčak ID:
201117
URI
Datum izdavanja:
17.5.2018.
Posjeta: 1.195 *