Record Details

Sunlight-enhanced calcareous deposition on cathodic stainless steel in natural seawater

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Sunlight-enhanced calcareous deposition on cathodic stainless steel in natural seawater
 
Creator Eashwar, M.
SathishKumar, P.
Ravishankar, R.
Subramanian, G.
 
Subject stainless steel
cathodic protection
electrochemistry
 
Description In replicate series of experiments in natural seawater, one in full darkness and the other in a 1:1 diurnal cycle with as little as 5 percent of natural solar illumination, sunlight promoted calcareous deposition on cathodic stainless steel surfaces. As exemplified by scanning electron microscopy, the deposit that formed under the natural diurnal cycle, in the presence of photosynthetic biofilms, was composed of finer calcareous crystals that provided more compact and more uniform surface coverage than the one formed in the dark. The light-enhanced deposit also possessed better scale properties, as suggested by X-ray analysis and electrochemical measurements. Sunlight enhancement of calcareous deposition looked all the more conspicuous when day and night regimes were examined independently. These results not only bear important implications for cathodic protection in marine waters, but also provide an intriguing analogy to coral reef calcification.
 
Date 2013-06-17T06:38:08Z
2013-06-17T06:38:08Z
2013
 
Type Journal Article
 
Identifier Biofouling, vol.29(2); 2013; 185-193
http://drs.nio.org/drs/handle/2264/4313
 
Language en
 
Rights The final and definitive form of the preprint has been published in the "Biofouling" © 2013 Taylor & Francis; "Biofouling" is available online at http://www.tandfonline.com with open URL of article : http://dx.doi.org/10.1080/08927014.2012.755673. The term & condition associated with this preprint is at http://www.tandfonline.com/page/terms-and-conditions
 
Publisher Taylor and Francis