In order to investigate whether magnetic field can improve the seawater desalination efficiency, the influence of magnetic field on the aqueous solutions of NaCl is studied by molecular dynamics (MD) simulations. The results show that, under the influence of magnetic field, the hydration number of Cl- ions increases and the mobility of hydrated Cl- ions is weakened, while the mean size of water clusters decreases and the mobility of water molecules is enhanced. These may lead to higher salt rejection and water flux by the usage of magnetic field in our novel desalination method based on rotating electromagnetic effect.
Ion implantation was applied to modify the surface properties of magnesium alloy. About
75 keV titanium ions with a dose of 5×1017 ions/ cm-2 and about 35 keV nitrogen ions with a dose of
3×1017 ions/ cm-2 were implanted into AZ31 magnesium alloy, respectively. AFM and FESEM were
used to examine the surface morphology of the treated samples. In contrast to the smooth surface
treated by N ion implantation, the Ti-treated surface was severely damaged. AES analysis reveals that
both kinds of ions implanted in AZ31 magnesium alloy took on a quasi-Gaussian distribution in the
near surface region. In the corrosion test, the N-implanted sample showed a better corrosion
resistance in 3.5wt.% NaCl solution than bare AZ31 sample, whereas the Ti-implanted sample
accelerated the corrosion behavior of AZ31 in this solution
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