Aluminum alloy sacrificial anode suitable for deep sea environment and high in current efficiency
A sacrificial anode and deep-sea environment technology, applied in the field of anti-corrosion, can solve the problems of high cost, uneven dissolution, low current efficiency, etc., and achieve the effect of less environmental pollution, uniform dissolution, and easy shedding
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Embodiment 1
[0009] Embodiment 1: The label is sample D1.
[0010] Using aluminum as the matrix, adding zinc, indium, tin, magnesium and titanium alloy elements to form a six-component alloy, the specific composition ratio: (wt%): zinc 6.0%, indium 0.020%, tin 0.05%, magnesium 0.5%, titanium 0.05%, of which impurity iron 2 The working area of making the used experimental sample of the present invention. The open circuit potential of the sacrificial anode in the deep sea environment is -1.100V (vs, Ag / AgCl, saturated KCl solution), the working potential is -1.076V (vs, Ag / AgCl, saturated KCl solution), and the current efficiency is 92.56%. The capacity is 2633A·h / kg. Dissolve evenly, corrosion products are easy to fall off.
Embodiment 2
[0011] Embodiment 2: the label is sample D2.
[0012] Using aluminum as the matrix, adding zinc, indium, tin, magnesium and titanium alloy elements to form a six-component alloy, the specific composition ratio: (wt%): zinc 5.8%, indium 0.025%, tin 0.05%, magnesium 1.0%, titanium 0.10%, of which impurity iron 2 The working area of making the used experimental sample of the present invention. The open circuit potential of the sacrificial anode in the deep sea environment is -1.103V (vs, Ag / AgCl, saturated KCl solution), the working potential is -1.048V (vs, Ag / AgCl, saturated KCl solution), and the current efficiency is 93.75%. The capacity is 2662A·h / kg. Dissolve evenly, corrosion products are easy to fall off.
Embodiment 3
[0013] Embodiment three: the label is sample D3.
[0014] Using aluminum as the matrix, adding zinc, indium, tin, magnesium and titanium alloy elements to form a six-component alloy, the specific composition ratio: (wt%): zinc 5.6%, indium 0.020%, tin 0.10%, magnesium 0.5%, titanium 0.10%, of which impurity iron 2 The working area of making the used experimental sample of the present invention. The open circuit potential of the sacrificial anode in the deep sea environment is -1.100V (vs, Ag / AgCl, saturated KCl solution), the working potential is -1.076V (vs, Ag / AgCl, saturated KCl solution), and the current efficiency is 93.02%. The capacity is 2644A·h / kg. Dissolve evenly, corrosion products are easy to fall off.
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