ISSN 0004-881X

Hot Corrosion and its Preventive Measures - a Review

by Satjot Singh Dhillon^1*, Jasmaninder Singh Grewal¹, and Vikas Chawla²

(1) Mechanical Engineering Department, GNDEC Ludhiana, Punjab, India
(2) Mechanical Engineering Department, FCET Ferozepur, Punjab, India

E-mail: satjot_dhillon@yahoo.in

Abstract

The annual cost of corrosion and corrosion protection in the United States is estimated by the National Association of Corrosion Engineers (NACE) to be in excess of 10 billion dollars. This figure is perhaps less intimidating considering that corrosion occurs, with varying degrees and types of degradation, whenever metallics are used. Corrosion can be mitigated by five basic methods: coatings, cathodic protection, materials selection, chemical inhibitors, and environmental change. The most effective method of protection against corrosion at high temperature i.e. hot corrosion is coatings. This paper summarizes the results of previous research done by various authors on the behavior of hot corrosion of various materials with and without coatings.

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