Abstract
Abstract A single Si 1− x C x coating and compound coatings were deposited on Mg–3Sn matrix alloy by magnetron sputtering method. Compound coatings included Mg or Mg/AlTi intermediates between Mg–3Sn substrate and Si 1− x C x coating. The thermal conductivity of the Mg–3Sn alloy after coating was enhanced at room temperature. The results showed that the Mg–3Sn alloy coated with Mg/AlTi/Si 1− x C x displayed higher thermal conductivity, its thermal conductivity after corrosion was 90.1 W/(m K) and 108.4 W/(m K) at 25 °C and 100 °C, respectively. Meanwhile, it was revealed that the Mg/Si 1− x C x and Mg/AlTi/Si 1− x C x compound coatings had nobler E corr and much lower i corr , higher R p , compared with the bare Mg–3Sn and Mg–3Sn/Si 1− x C x system, and improved the corrosion resistance of the magnesium substrate.
Published Version
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