The objective of this study is to evaluate the corrosive wear resistance and to clarify the damage behavior of materials used for sliding parts in seawater. Sliding wear tests of six different metals including carbon steel, stainless steel and copper base alloys rubbed against A1²O³ and a bearing steel were carried out in 3% NaCl solution using a reciprocating ball-on-disk test rig equipped with an electrochemical potentiostat. The obtained results indicate that the corrosive wear resistance should be evaluated by synthetically considering many factors: electrochemical potentials, material properties, and corrosion characteristics of the contacting materials, including corrosive products.