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 | |
| Publication status | E-pub ahead of print - 9 Oct 2019 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- Abrasive wear
- Cermet
- Thermally sprayed coating
- Tribocorrosion
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Tribocorrosion behaviour of thermally sprayed cermet coatings in paper machine environment. / Huttunen-Saarivirta, E. (Corresponding Author); Heino, V.; Isotahdon, E.; Kilpi, L.; Ronkainen, H.
In: Tribology International, Vol. 142, 106006, 02.2020.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Tribocorrosion behaviour of thermally sprayed cermet coatings in paper machine environment
AU - Huttunen-Saarivirta, E.
AU - Heino, V.
AU - Isotahdon, E.
AU - Kilpi, L.
AU - Ronkainen, H.
PY - 2019/10/9
Y1 - 2019/10/9
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
UR - http://www.scopus.com/inward/record.url?scp=85073011895&partnerID=8YFLogxK
U2 - 10.1016/j.triboint.2019.106006
DO - 10.1016/j.triboint.2019.106006
M3 - Article
AN - SCOPUS:85073011895
VL - 142
JO - Tribology International
JF - Tribology International
SN - 0301-679X
M1 - 106006
ER -