Abstract
To investigate the performance of steel with a heavy-duty coating (polyurethane) against sea ice friction as an anticorrosive measure, a sliding wear test and an exposure test for the material in an ice-covered area were performed to reveal the characteristics of wear mechanisms and the wear rates, and to give some suggestions from a practical point of view. In the sliding wear test, ice caused severe adhesive wear of the resin coating (TPU) and a wear rate one order of magnitude greater than the abrasive wear rate of carbon steel; however, ice containing particles caused even more severe abrasive wear, with a rate that was a few times greater than the adhesive wear rate. From the exposure test, it was confirmed that the separation of the coating progressed from the edge to reach greater deterioration in the fourth year. It was concluded that the application of such a heavy-duty coating, which has been used under normal sea areas, to ice-infested waters would be inappropriate, otherwise it requires special care and proper management for its application in ice-infested waters where active sea ice movement is seen.
