THE USE OF HIGH SPEED ROTATING DISC ELECTRODES FOR THE STUDY OF EROSION-CORROSION OF COPPER BASE ALLOYS IN SEA WATER

A high speed rotating disc electrode has been used to assess the susceptibility to erosion-corrosion of copper base alloys. The results have been compared with tests carried out with a spinning wheel technique and found to be in good agreement. A figure of merit for the analysis of the anodic polarization curves has been used and shown to give a useful relationship with the known erosion-corrosion resistance of the alloys studied. The results are discussed on the basis of a diffusionally controlled mechanism for erosion-corrosion and it is concluded that the self perpetuating character of the erosive cavities is related to the solubility of Cu(I) chlorocomplexes and to their diffusion in the boundary later. A decrease in the rate of ionic migration in the oxide films should lead to a better resistance to erosion-corrosion.

• Supplemental Notes:
  • Corrosion Science, 28 (1988), p. 141 (No. 2) [11 pp., 26 ref., 3 tab., 6 fig.]
• Authors:
  • Sanchez, S R
  • de Schiffrin, D J
• Publication Date: 1988

Language

• English

Subject/Index Terms

• TRT Terms: Copper alloys
• Old TRIS Terms: Erosion corrosion
• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00693057
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM