Hot corrosion behavior of thermal spray coatings on superalloy in coal-fired boiler environment

Coal is an attractive fuel owing to its low price linked to its worldwide availability but combustion of coal generates very corrosive media especially near the superheater tubes. The present investigation is an attempt to evaluate the hot corrosion behavior of detonation-gun sprayed coatings of Cr3...

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Main Authors: Kamal, S., Sharma, K.V., Jayaganthan, R., Prakash, S.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.31516 /
Published: Cambridge University Press 2015
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84944096585&doi=10.1557%2fjmr.2015.264&partnerID=40&md5=d46ffe8b338be065570acfb64680779c
http://eprints.utp.edu.my/31516/
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spelling utp-eprints.315162022-03-26T03:21:22Z Hot corrosion behavior of thermal spray coatings on superalloy in coal-fired boiler environment Kamal, S. Sharma, K.V. Jayaganthan, R. Prakash, S. Coal is an attractive fuel owing to its low price linked to its worldwide availability but combustion of coal generates very corrosive media especially near the superheater tubes. The present investigation is an attempt to evaluate the hot corrosion behavior of detonation-gun sprayed coatings of Cr3C2-NiCr, NiCrAlY + 0.4 wt CeO2, and NiCoCrAlYTa on superfer 800H, exposed to low temperature super-heater zone of the coal-fired boiler. The specimens were hanged in the platen super-heater of coal-fired boiler where the gas temperature was around 900 °C ± 10 °C. Hot corrosion experiments were performed for 10 cycles, each cycle consisting of 100 h exposure followed by 1 h cooling at ambient temperature. All three coatings deposited on superfer 800H imparted better hot corrosion resistance than the bare uncoated one. The Cr3C2-NiCr coated superalloy performed better than the other two coatings in the given boiler environment. © Materials Research Society 2015. Cambridge University Press 2015 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-84944096585&doi=10.1557%2fjmr.2015.264&partnerID=40&md5=d46ffe8b338be065570acfb64680779c Kamal, S. and Sharma, K.V. and Jayaganthan, R. and Prakash, S. (2015) Hot corrosion behavior of thermal spray coatings on superalloy in coal-fired boiler environment. Journal of Materials Research, 30 (18). pp. 2829-2843. http://eprints.utp.edu.my/31516/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Coal is an attractive fuel owing to its low price linked to its worldwide availability but combustion of coal generates very corrosive media especially near the superheater tubes. The present investigation is an attempt to evaluate the hot corrosion behavior of detonation-gun sprayed coatings of Cr3C2-NiCr, NiCrAlY + 0.4 wt CeO2, and NiCoCrAlYTa on superfer 800H, exposed to low temperature super-heater zone of the coal-fired boiler. The specimens were hanged in the platen super-heater of coal-fired boiler where the gas temperature was around 900 °C ± 10 °C. Hot corrosion experiments were performed for 10 cycles, each cycle consisting of 100 h exposure followed by 1 h cooling at ambient temperature. All three coatings deposited on superfer 800H imparted better hot corrosion resistance than the bare uncoated one. The Cr3C2-NiCr coated superalloy performed better than the other two coatings in the given boiler environment. © Materials Research Society 2015.
format Article
author Kamal, S.
Sharma, K.V.
Jayaganthan, R.
Prakash, S.
spellingShingle Kamal, S.
Sharma, K.V.
Jayaganthan, R.
Prakash, S.
Hot corrosion behavior of thermal spray coatings on superalloy in coal-fired boiler environment
author_sort Kamal, S.
title Hot corrosion behavior of thermal spray coatings on superalloy in coal-fired boiler environment
title_short Hot corrosion behavior of thermal spray coatings on superalloy in coal-fired boiler environment
title_full Hot corrosion behavior of thermal spray coatings on superalloy in coal-fired boiler environment
title_fullStr Hot corrosion behavior of thermal spray coatings on superalloy in coal-fired boiler environment
title_full_unstemmed Hot corrosion behavior of thermal spray coatings on superalloy in coal-fired boiler environment
title_sort hot corrosion behavior of thermal spray coatings on superalloy in coal-fired boiler environment
publisher Cambridge University Press
publishDate 2015
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-84944096585&doi=10.1557%2fjmr.2015.264&partnerID=40&md5=d46ffe8b338be065570acfb64680779c
http://eprints.utp.edu.my/31516/
_version_ 1741197588021903360
score 11.62408

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