Erosion and Hot Corrosion Phenomena in Thermal Power Plant and their Preventive Methods: A StudyAuthor : Rakesh Kumar, Rajdeep Singh and Santosh Kumar
Volume 7 No.1 January-June 2018 pp 38-45
Erosion and hot corrosion in coal fired boiler at elevated temperature is the primary reason behind downtime in power generating plants. In the present study an attempt has been made to study the basic concept of erosion, types, mechanism and tribological parameters that affect erosion wear. In addition, types and stages of hot corrosion have been discussed in brief with an emphasis on different protective methods for erosion such as use of super alloy, inhibitor, protective coating and hard facing. The distinct investigations have been carried to overcome the erosion and hot corrosion problems and found that erosion resistant coating and hard facing are effective way to resist degradations of erosion-corrosion (E-C) in a coal fired boiler.
Hot Corrosion, Erosion, Hardfacing, Chemical Vapour Deposition (CVD), Physical Vapour Deposition (PVD), Thermal Spraying
 J. K. Stein, S. B. Schorr and R. A. Marder, “Erosion of Thermal Spray Mcr Cr C Cermets Coatings”, Wear, Vol. 224, pp. 153-159, 1999.
 H. V. Hidalgo, J. Verela, C. A. Menendez and P. S. Martinez, “High Temperature Erosion Wear of Flame and Plasma Sprayed Nickel-Chromium Coatings Under Simulated Coal-Fired Boiler Atmospheres”, Wear, Vol. 247, pp. 214-222, 1999.
 R. Bellman and A. Levy, “Erosion mechanism in ductile metals”, Journal of Wear, Vol. 70, pp. 1-28, 1981.
 M. Parsi, K. Najmi, F. Najafifard, S. Hassani and McLaury, “A comprehensive review of solid particle erosion modeling for oil and gas wells and pipelines applications”, Journal of Natural Gas Science and Engineering, Vol. 21, pp.850-873, 2014.
 D. Chase, E. Rybicki and J. Shadley, “A model for the effect of velocity on erosion of N80 steel tubing due to the normal impingement of solid particle”, Journal of Energy Resource. Tech., Vol. 114, pp.54-64, 1992.
 I. Hutchings, “Some comments on the theoretical treatment of erosive particle impacts”, in Proc. of the 5th Int. Conf. on Erosion by Liquid and Solid Impact, pp. 36-41, 1980.
 D. Andrews, “An analysis of solid particle erosion mechanisms”, J. Phys. D Appl. Phys., Vol. 14, pp. 1979-1991, 1981.
 S. Jahanmir, “The mechanics of subsurface damage in solid particle erosion”, Wear, Vol. 61, pp. 309-338, 1980.
 S. Srinivasan, R. O. Scattergood, “Effect of erodent hardness on erosion of brittle materials”, Wear, Vol. 128, No. 2, pp.139-152, 1988.
 G. Sundararajan, “A comprehensive model for the solid particle erosion of ductile materials”, Wear, Vol. 149, pp. 111-127, 1991.
 I. Kleis and P. Kulu, “Solid Particle Erosion Occurrence, Prediction and Control”, Springer, Verlag London Limited, Library of Congress Control Number: 2007937988, 2008.
 V. S. Sooraj and V. Radhakrishnan, “Elastic impact of abrasives for controlled erosion in fine finishing of surfaces”, ASME J. Manuf. Sci. Eng., Vol.135, pp.125-132, 2013.
 M. Dular, B. Stoffel and B. Sirok, “Development of a Cavitation Erosion Model”, Wear, 261, pp. 642–655, 2006.
 N. Fujisawa, K. Wada and T. Yamagata, “Numerical Analysis on the Wall- Thinning Rate of Bent Pipe by Liquid Droplet Impingement Erosion”, Engg. Failure Analysis, Vol. 62, pp. 306-315, 2016.
 B. Mann and V. Arya, “Abrasive and Erosive Wear Characteristics of Plasma Nitriding and HVOF Coatings: Their Application in Hydro Turbines”, Wear, Vol. 249, pp. 354, 2001.
 H. S. Grewal, S. Bhandari and H. Singh, “Parametric Study of Slurry-Erosion of Hydro turbine Steels with and without Detonation Gun Spray Coatings using Taguchi Technique”, Journal of Metall. Mater. Trans., Vol. 43, pp. 33-37, 2012.