Al alloy anode is mostly used for protecting marine structures such as pier steel piles and ship's body. Recently it has been reported that the life of Al alloy anode has been shortened significantly than the original design life. It is suggested that the suspected reasons for this problem mentioned above seems to be the improper protection design of alloy of anode on sea water regardless of environmental facotrs such as flow rate, temperature, contamination degree etc. However there is few paper about to the sea water contamination degree affecting to the life of Al alloy anode. In this study, the property of Al alloy anode was investigated as a parameter of sea water contamination degree such as variation of pH 2, 4, 6, 8, 10 and each sea port's contaminated waters.

• 김성종