Estudio sobre la polarización con el tiempo de distintos ánodos de sacrificio de cinc en agua de mar

Authors

  • R. Quintana Universidad de la Habana
  • S. Muller Centro Nacional de Investigaciones Científicas

Abstract

A study has been made of changes produced by tP.e passage of time in the electrochemical properties of various zinc anodes used for cathodic protection of ships. The present study follows up previously reported carlier in­vestigatiom. Short circuit current and potential vs time curves were studied, using five dif­ferent kinds of zinc short circuited with ST3 navy steel and sea water as electro­lyte. The potencial-time curves were also measured with impressed current for thc SCF zinc navy steel couple with sea water again used as electrolyte. We found that zinc anode polarization and steel cathode polarization increased rapidly at first, with the latter, becoming stationary before the first. The steel potential remains within the range of protection for equal surfoces. If the cathodic surface is too large in comparison with the anodic surface, that is, if zinc current density is high, its anodic polarization increases with time to such an extent that steel is no longer protected. This does not occur if the zinc anodes chemical composition is in accordance with correct technical norms.

Published

2022-11-23

How to Cite

Quintana, R., & Muller, S. (2022). Estudio sobre la polarización con el tiempo de distintos ánodos de sacrificio de cinc en agua de mar. NATIONAL CENTER FOR SCIENTIFIC RESEARCH (CENIC) CHEMICAL SCIENCES JOURNAL, 3(2), 069-079. Retrieved from https://revista.cnic.edu.cu/index.php/RevQuim/article/view/3121

Issue

Section

Research articles