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Journal of Metallurgy and Materials Science
Year : 2009, Volume : 51, Issue : 1
First page : ( 53) Last page : ( 59)
Print ISSN : 0972-4257. Online ISSN : 0974-1267.

Effect of sodium hexameta phosphate in the presence and absence of calcium chloride on corrosion behaviour of different types of white cast iron

Konar J.1,*, Kumari Smita1, Sudha T. Nag1, Amritphale S. S.1,2, Chandra N.1,2

1National Metallurgical Laboratory (CSIR), Jamshedpur -831007, India.

2Advance Material Process Research Institute, Bhopal - 462026, India.

*Corresponding Author Email: konar@nmlindia.org

Abstract

Sodium hexameta phosphate enhances the corrosion rate of steels. But in the prsence of calcium/magnesium metal ion it deaccelerates corrosion rate. Using 0.5% SHMP in presence of CaCl2 corrosion rate decreases. Corrosion rate decreases upto the addition of 10 ppm of CaCl2 solution.

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Key words

White cast iron, sodium hexameta phosphate, calcium chloride, corrosion rate.

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