Cavitation-Corrosion Resistance of the Metal of Icebreaker Side Plating

• Published in: Metal science and heat treatment Vol. 43; no. 11-12; p. 448
• Main Authors: Rodionov, V P, Omel'yanyuk, M V, Tarasov, S M
• Format: Journal Article
• Language: English
• Published: New York Springer Nature B.V 01.11.2001
• ISSN: 0026-0673; 1573-8973
• DOI: 10.1023/A:1014868015261

The service of icebreakers and ships under the conditions of the Arctic and Antarctic Oceans has shown that the external surfaces of their frames experience intense corrosion-erosion wear for 3 to 23 years. The wear has the same external features and is represented as coarse dimple fracture. The power of the icebreaker is chiefly spent for breaking ice and overcoming friction against snow and ice. Therefore, with intensification of the corrosion-erosion damage of the plating the ice-breaking capacity of the ship decreases. A study performed by the Viartsilya Company (Finland) has shown that after seven years of service the ice-braking capacity can deteriorate by 60% due to the enhanced roughness of the plating. In order to determine the strength characteristics of shipbuilding steels the laboratory of hydrodynamics of the Armavir Branch of the Krasnodar Polytechnical Institute performed a study of the mechanism of cavitation-corrosion wear and considered problems of the choice of steels with enhanced resistance to the cavitation-corrosion effect.