Tribocorrosion behaviour of thermally sprayed cermet coatings in paper machine environment

Elina Huttunen-Saarivirta; Vuokko Heino; Elisa Isotahdon; Lauri Kilpi; Helena Ronkainen

doi:10.1016/j.triboint.2019.106006

Tribocorrosion behaviour of thermally sprayed cermet coatings in paper machine environment

Elina Huttunen-Saarivirta^*, Vuokko Heino, Elisa Isotahdon, Lauri Kilpi, Helena Ronkainen

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

27 Citations (Scopus)

Abstract

Tribocorrosion behaviour of thermally sprayed cermet coatings: WC-CoCr deposited by HVOF and HVAF and Cr₃C₂-WC-NiCrCo applied by HVAF, was examined in paper machine environment in a pin-on-disc tribometer under the load of 20 N in electrolyte containing chlorides and sulphates, pH 4.5. Wear was the dominant degradation mechanism for all coatings, followed by corrosion-induced wear, the importance of which increased with rising potential. The overall material losses were lowest for HVAF WC-CoCr and highest for HVAF Cr₃C₂-WC-NiCrCo, the latter being related to the evident abrasive wear of the Cr₃C₂ phase and cracking along Cr₃C₂-matrix interface in the near-surface areas. Among the three coatings, contribution by corrosion to the damage was greatest in HVOF WC-CoCr, likely due to high degree of porosity.

Original language	English
Article number	106006
Journal	Tribology International
Volume	142
Early online date	9 Oct 2019
DOIs	https://doi.org/10.1016/j.triboint.2019.106006
Publication status	Published - Feb 2020
MoE publication type	A1 Journal article-refereed

Funding

The financial support for the SUBTRIB project from the Finnish Funding Agency for Technology and Innovation (Business Finland; decision number 865/31/2016 ), participating companies and VTT Technical Research Centre of Finland Ltd is gratefully acknowledged.

Keywords

Abrasive wear
Cermet
Thermally sprayed coating
Tribocorrosion

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10.1016/j.triboint.2019.106006

Cite this

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title = "Tribocorrosion behaviour of thermally sprayed cermet coatings in paper machine environment",

abstract = "Tribocorrosion behaviour of thermally sprayed cermet coatings: WC-CoCr deposited by HVOF and HVAF and Cr3C2-WC-NiCrCo applied by HVAF, was examined in paper machine environment in a pin-on-disc tribometer under the load of 20 N in electrolyte containing chlorides and sulphates, pH 4.5. Wear was the dominant degradation mechanism for all coatings, followed by corrosion-induced wear, the importance of which increased with rising potential. The overall material losses were lowest for HVAF WC-CoCr and highest for HVAF Cr3C2-WC-NiCrCo, the latter being related to the evident abrasive wear of the Cr3C2 phase and cracking along Cr3C2-matrix interface in the near-surface areas. Among the three coatings, contribution by corrosion to the damage was greatest in HVOF WC-CoCr, likely due to high degree of porosity.",

keywords = "Abrasive wear, Cermet, Thermally sprayed coating, Tribocorrosion",

author = "Elina Huttunen-Saarivirta and Vuokko Heino and Elisa Isotahdon and Lauri Kilpi and Helena Ronkainen",

year = "2020",

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doi = "10.1016/j.triboint.2019.106006",

language = "English",

volume = "142",

journal = "Tribology International",

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T1 - Tribocorrosion behaviour of thermally sprayed cermet coatings in paper machine environment

AU - Huttunen-Saarivirta, Elina

AU - Heino, Vuokko

AU - Isotahdon, Elisa

AU - Kilpi, Lauri

AU - Ronkainen, Helena

PY - 2020/2

Y1 - 2020/2

N2 - Tribocorrosion behaviour of thermally sprayed cermet coatings: WC-CoCr deposited by HVOF and HVAF and Cr3C2-WC-NiCrCo applied by HVAF, was examined in paper machine environment in a pin-on-disc tribometer under the load of 20 N in electrolyte containing chlorides and sulphates, pH 4.5. Wear was the dominant degradation mechanism for all coatings, followed by corrosion-induced wear, the importance of which increased with rising potential. The overall material losses were lowest for HVAF WC-CoCr and highest for HVAF Cr3C2-WC-NiCrCo, the latter being related to the evident abrasive wear of the Cr3C2 phase and cracking along Cr3C2-matrix interface in the near-surface areas. Among the three coatings, contribution by corrosion to the damage was greatest in HVOF WC-CoCr, likely due to high degree of porosity.

AB - Tribocorrosion behaviour of thermally sprayed cermet coatings: WC-CoCr deposited by HVOF and HVAF and Cr3C2-WC-NiCrCo applied by HVAF, was examined in paper machine environment in a pin-on-disc tribometer under the load of 20 N in electrolyte containing chlorides and sulphates, pH 4.5. Wear was the dominant degradation mechanism for all coatings, followed by corrosion-induced wear, the importance of which increased with rising potential. The overall material losses were lowest for HVAF WC-CoCr and highest for HVAF Cr3C2-WC-NiCrCo, the latter being related to the evident abrasive wear of the Cr3C2 phase and cracking along Cr3C2-matrix interface in the near-surface areas. Among the three coatings, contribution by corrosion to the damage was greatest in HVOF WC-CoCr, likely due to high degree of porosity.

KW - Abrasive wear

KW - Cermet

KW - Thermally sprayed coating

KW - Tribocorrosion

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U2 - 10.1016/j.triboint.2019.106006

DO - 10.1016/j.triboint.2019.106006

M3 - Article

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SN - 0301-679X

VL - 142

JO - Tribology International

JF - Tribology International

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ER -

Tribocorrosion behaviour of thermally sprayed cermet coatings in paper machine environment

Abstract

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Keywords

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