Influence of Seawater Flow Velocity on the Morphological Characteristics of Calcareous Deposits Formed by Cathodic Protection

DOI

10.2991/cmes-15.2015.28How to use a DOI?

Keywords

seawater, calcareous deposits, flow velocity, galvanostatic, cathodic protection

Abstract

The influence of seawater flow velocity on calcareous deposits formed under galvanostatic polarization mode was studied. The protection potentials of electrodes shifted positively with increasing flow velocities which were monitored versus time at various flow velocities. The whole curves of potential decay appeared two inflection points, corresponding to the different processes of crystal sedimentation. Observation by scanning electron microscope and X-ray diffraction analyses demonstrated that the ratio of magnesium in the deposits increased with flow velocities, and the main kind of crystal was brucite when the velocity was higher than 10 cm/s.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Chengjie Li
AU  - Min Du
AU  - Xin Cui
PY  - 2015/04
DA  - 2015/04
TI  - Influence of Seawater Flow Velocity on the Morphological Characteristics of Calcareous Deposits Formed by Cathodic Protection
BT  - Proceedings of the 2nd International Conference on Civil, Materials and Environmental Sciences
PB  - Atlantis Press
SP  - 95
EP  - 98
SN  - 2352-5401
UR  - https://doi.org/10.2991/cmes-15.2015.28
DO  - 10.2991/cmes-15.2015.28
ID  - Li2015/04
ER  -