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An Investigation on Hot Corrosion Behaviour of Cermet Coatings in Simulated Boiler Environment

  • Amandeep Singh
  • Khushdeep GoyalEmail author
  • Rakesh Goyal
Article
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Abstract

In this research work, hot corrosion behaviour of different Cr3C2–NiCr coatings has been investigated. The coatings were deposited on commercially available boiler tube steel with high velocity oxy fuel thermal spraying technique. The uncoated and coated specimens were exposed to elevated temperature in a silicon tube furnace at 700 °C in molten salt environment. The thermogravimetric technique was used to compare the corrosion resistance of different coatings for 50 cycles at high temperature. The microstructures of exposed specimens were evaluated with X-ray diffraction and scanning electron microscopy with elemental compositional analysis. 10Cr3C2–90NiCr and 20Cr3C2–80NiCr coatings provided the higher resistance to corrosion as compared to 100NiCr and 35Cr3C2–65NiCr. The formation of chromium carbide layer on the coated surface and this layer protect them from corrosion.

Keywords

Corrosion Boiler Steel Coating Temperature 

Notes

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Mechanical Engineering DepartmentPunjabi UniversityPatialaIndia
  2. 2.Chitkara University Institute of Engineering and Technology, Chitkara UniversityRajpuraIndia

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