Corrosion Behavior of Copper Materials in Marine Atmosphere under Action of Magnetic Field

The effect of magnetic field on the corrosion behavior of brass, pure copper, bronze and beryllium copper in marine atmosphere was studied by corrosion rate calculation, electrochemical testing, scanning electron microscopy and X-ray diffraction analysis. The results show that the external magnetic field accelerated the corrosion of copper materials in marine atmosphere, but did not affect the phases of corrosion products on the surface of copper materials. The main corrosion products of copper materials were CuCl₂, Cu₂O, CuSO₄·3Cu(OH)₂·2H₂O and CuCl₂·3Cu(OH)₂. In addition, ZnCl₂ was found in the corrosion products of brass, and a small amount of Al₂O₃ was found in the corrosion products of beryllium copper.