Hot corrosion behaviour of different Cr3C2–NiCr coatings on boiler tube steel at elevated temperature

Karanjit Singh (Department of Mechanical Engineering, Punjabi University, Patiala, India)
Khushdeep Goyal (Department of Mechanical Engineering, Punjabi University, Patiala, India)
Rakesh Goyal (Chitkara University Institute of Engineering and Technology, Chitkara University, Punjab, India)

World Journal of Engineering

ISSN: 1708-5284

Publication date: 24 June 2019

Abstract

Purpose

This paper aims to investigate hot corrosion behaviour of different Cr3C2–NiCr coatings on boiler tube steel.

Design/methodology/approach

High velocity oxy fuel technique has been used to deposit different coatings on commercially available ASTM-SA213-T22 boiler tube steel. The hot corrosion studies have been performed in molten salt environment at 900°C temperature in silicon tube furnace in laboratory.

Findings

The results showed that uncoated superalloy suffered intense spalling and the weight change was massive during each cycle on studies of hot corrosion 900°C. The 100 per cent NiCr and 10 per cent (Cr3C2) – 90 per cent (NiCr) coatings provided better protection to T22 steel against the hot corrosion because of the formation of Ni and Cr3C2 layers.

Originality/value

In this research a variety of coatings have been used. This research work has been aimed to investigate the hot corrosion behavior of Boiler Steel b with different Cr3C2–NiCr coatings, under molten salt environment in Silicon tube furnace at 900°C, under cyclic conditions.

Keywords

Citation

Singh, K., Goyal, K. and Goyal, R. (2019), "Hot corrosion behaviour of different Cr3C2–NiCr coatings on boiler tube steel at elevated temperature", World Journal of Engineering, Vol. 16 No. 4, pp. 452-459. https://doi.org/10.1108/WJE-02-2019-0049

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Publisher

:

Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited

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