Optimised selection of new protective coatings for biofuel boiler applications

Satu Tuurna (Corresponding Author), Tommi Varis, Karri Penttilä, Kimmo Ruusuvuori, Stefan Holmström, Sanni Yli-Olli

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Abstract

Using biofuels in power and CHP boilers can pose a challenge for materials performance. Formation of deposits containing e.g. potassium, sulphur, calcium, sodium, and chlorine can result in severe corrosion of conventional steels and alloys at relatively modest temperatures. Given suitable component design and fabrication facilities, coatings may be considered to protect the fireside surfaces. This paper aims to present a systematic approach to the design and selection criteria for protective coatings of boilers. The approach includes modelling of the process and surface conditions, optimisation of the coating process and structure, and performance validation in the laboratory and plant scales. The applied examples have included iron and nickel based HVOF and arc sprayed coatings subjected to verification field testing in boiler testing under in aggressive biofuel conditions. The coatings have shown good corrosion resistance in both laboratory tests and long-term harsh field tests. The paper discusses the used approach for finding a suitable and cost effective coating for biofuel boiler applications. The paper gives test results from microstructural, corrosion resistance and field testing experience for the selected coatings.
Original languageEnglish
Pages (from-to)642-649
Number of pages8
JournalMaterials and Corrosion
Volume62
Issue number7
DOIs
Publication statusPublished - 2011
MoE publication typeA1 Journal article-refereed

Fingerprint

Biofuels
Protective coatings
biofuel
Boilers
coating
Coatings
corrosion
Corrosion resistance
Testing
Sprayed coatings
Steel
Chlorine
Nickel
Sulfur
Potassium
Calcium
Deposits
Iron
Sodium
boiler

Keywords

  • protection
  • coating performance
  • biofuel boiler
  • life extension

Cite this

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title = "Optimised selection of new protective coatings for biofuel boiler applications",
abstract = "Using biofuels in power and CHP boilers can pose a challenge for materials performance. Formation of deposits containing e.g. potassium, sulphur, calcium, sodium, and chlorine can result in severe corrosion of conventional steels and alloys at relatively modest temperatures. Given suitable component design and fabrication facilities, coatings may be considered to protect the fireside surfaces. This paper aims to present a systematic approach to the design and selection criteria for protective coatings of boilers. The approach includes modelling of the process and surface conditions, optimisation of the coating process and structure, and performance validation in the laboratory and plant scales. The applied examples have included iron and nickel based HVOF and arc sprayed coatings subjected to verification field testing in boiler testing under in aggressive biofuel conditions. The coatings have shown good corrosion resistance in both laboratory tests and long-term harsh field tests. The paper discusses the used approach for finding a suitable and cost effective coating for biofuel boiler applications. The paper gives test results from microstructural, corrosion resistance and field testing experience for the selected coatings.",
keywords = "protection, coating performance, biofuel boiler, life extension",
author = "Satu Tuurna and Tommi Varis and Karri Penttil{\"a} and Kimmo Ruusuvuori and Stefan Holmstr{\"o}m and Sanni Yli-Olli",
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year = "2011",
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journal = "Materials and Corrosion",
issn = "0947-5117",
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Optimised selection of new protective coatings for biofuel boiler applications. / Tuurna, Satu (Corresponding Author); Varis, Tommi; Penttilä, Karri; Ruusuvuori, Kimmo; Holmström, Stefan; Yli-Olli, Sanni.

In: Materials and Corrosion, Vol. 62, No. 7, 2011, p. 642-649.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Optimised selection of new protective coatings for biofuel boiler applications

AU - Tuurna, Satu

AU - Varis, Tommi

AU - Penttilä, Karri

AU - Ruusuvuori, Kimmo

AU - Holmström, Stefan

AU - Yli-Olli, Sanni

N1 - Project code: 17344

PY - 2011

Y1 - 2011

N2 - Using biofuels in power and CHP boilers can pose a challenge for materials performance. Formation of deposits containing e.g. potassium, sulphur, calcium, sodium, and chlorine can result in severe corrosion of conventional steels and alloys at relatively modest temperatures. Given suitable component design and fabrication facilities, coatings may be considered to protect the fireside surfaces. This paper aims to present a systematic approach to the design and selection criteria for protective coatings of boilers. The approach includes modelling of the process and surface conditions, optimisation of the coating process and structure, and performance validation in the laboratory and plant scales. The applied examples have included iron and nickel based HVOF and arc sprayed coatings subjected to verification field testing in boiler testing under in aggressive biofuel conditions. The coatings have shown good corrosion resistance in both laboratory tests and long-term harsh field tests. The paper discusses the used approach for finding a suitable and cost effective coating for biofuel boiler applications. The paper gives test results from microstructural, corrosion resistance and field testing experience for the selected coatings.

AB - Using biofuels in power and CHP boilers can pose a challenge for materials performance. Formation of deposits containing e.g. potassium, sulphur, calcium, sodium, and chlorine can result in severe corrosion of conventional steels and alloys at relatively modest temperatures. Given suitable component design and fabrication facilities, coatings may be considered to protect the fireside surfaces. This paper aims to present a systematic approach to the design and selection criteria for protective coatings of boilers. The approach includes modelling of the process and surface conditions, optimisation of the coating process and structure, and performance validation in the laboratory and plant scales. The applied examples have included iron and nickel based HVOF and arc sprayed coatings subjected to verification field testing in boiler testing under in aggressive biofuel conditions. The coatings have shown good corrosion resistance in both laboratory tests and long-term harsh field tests. The paper discusses the used approach for finding a suitable and cost effective coating for biofuel boiler applications. The paper gives test results from microstructural, corrosion resistance and field testing experience for the selected coatings.

KW - protection

KW - coating performance

KW - biofuel boiler

KW - life extension

U2 - 10.1002/maco.201005898

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JO - Materials and Corrosion

JF - Materials and Corrosion

SN - 0947-5117

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ER -