抄録
The temperature influences on the corrosion rate of hot-dipped aluminized steel in the seawater were investigated for the galvanic couples of the aluminum/carbon steel, the aluminum/Fe-Al alloy, the aluminum/stainless steel, the Fe-Al alloy/carbon steel, the Fe-Al alloy/stainless steel, and the carbon steel/stainless steel.
In all the couples, the corrosion rate of aluminum is larger than the corrosion rate of aluminum which is not connected with other metals. The corrosion rates grow in order of aluminum/carbon steel>aluminum/stainless steel>aluminum/Fe-Al alloy. The corrosion rate of aluminum connected with the carbon steel is the largest. The corrosion rate is seven times larger than the corrosion rate of aluminum, which is not connected with other metals.
The galvanic corrosion rate of the carbon steel, which is connected with Fe-Al alloy or stainless steel, is larger than the corrosion rate of aluminum, which is not connected with other metals. The galvanic corrosion rate of the carbon steel is 1.3-1.8 times larger than the corrosion rate of carbon steel which is not connected with other metals.
