A study of Cr3C2-based HVOF- and HVAF-sprayed coatings: Abrasion, dry particle erosion and cavitation erosion resistance

V. Matikainen; H. Koivuluoto; P. Vuoristo

doi:10.1016/j.wear.2020.203188

A study of Cr₃C₂-based HVOF- and HVAF-sprayed coatings: Abrasion, dry particle erosion and cavitation erosion resistance

V. Matikainen
, H. Koivuluoto
, P. Vuoristo^*

^*Corresponding author for this work

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

98 Citations (Scopus)

Abstract

Material and spray process selection are the key factors in the tailoring of thermal sprayed coatings for demanding industrial applications. In this study, four commercial Cr₃C₂-based feedstock materials were sprayed with gas-fuelled high-velocity oxygen-fuel (HVOF) and modern high-velocity air-fuel (HVAF) spray processes. Two materials with standard Cr₃C₂–25NiCr composition (porous and dense), a Cr₃C₂–50NiCrMoNb and Cr₃C₂–37WC–18NiCoCr materials were sprayed in addition to the reference WC-10Co4Cr material. The Cr₃C₂–50NiCrMoNb had a higher content of the Ni-based metal matrix compared to standard Cr₃C₂–25NiCr composition for added corrosion resistance, while the Cr₃C₂–37WC–18NiCoCr material contained additional tungsten carbide (WC) particles to improve the wear resistance. In abrasion and dry particle erosion, the Cr₃C₂–50NiCrMoNb coatings showed a higher degree of plastic deformation and increased material loss, whereas the Cr₃C₂–37WC–18NiCoCr coating had wear resistance between the standard Cr₃C₂–25NiCr and reference WC-10Co4Cr coatings. In cavitation erosion, the lower carbide content of Cr₃C₂–50NiCrMoNb coatings turned out to improve the resistance against fatigue wear due to higher fracture toughness. Overall, the HVAF sprayed coatings had higher elastic modulus, higher fracture toughness, equal or higher abrasion and erosion resistance, and higher cavitation erosion resistance compared to the HVOF sprayed counterparts.

Original language	English
Article number	203188
Number of pages	11
Journal	Wear
Volume	446-447
DOIs	https://doi.org/10.1016/j.wear.2020.203188
Publication status	Published - 15 Apr 2020
Publication type	A1 Journal article-refereed

Funding

The authors would like to thank Mr. Mikko Kylmälahti (Tampere University) for the assistance with HVOF and HVAF spraying of the coatings and VTT (Technical Research Centre of Finland) for providing the possibility to measure elastic modulus of the coatings. The authors are grateful to Business Finland , the participating companies of the HYBRIDS research programme, and DIMECC Ltd. for financial support. M. Sc. (Eng.) Ville Matikainen acknowledges the personal grant from the Finnish Cultural Foundation (Grant ID 00170681 ). Appendix A

Keywords

Abrasion
Cavitation erosion
Coating
Erosion
Hardmetal
HVAF

Publication forum classification

Publication forum level 2

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1016/j.wear.2020.203188

Coating techniques
Koivuluoto, H. (Contact) & Varis, T. (Contact)
Materials Science and Environmental Engineering
Facility/equipment: Research infrastructure
Tribology and wear testing
Amanov, A. (Contact), Juoksukangas, J. (Contact) & Valtonen, K. (Contact)
Materials Science and Environmental Engineering
Facility/equipment: Research infrastructure

Cite this

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title = "A study of Cr3C2-based HVOF- and HVAF-sprayed coatings: Abrasion, dry particle erosion and cavitation erosion resistance",

abstract = "Material and spray process selection are the key factors in the tailoring of thermal sprayed coatings for demanding industrial applications. In this study, four commercial Cr3C2-based feedstock materials were sprayed with gas-fuelled high-velocity oxygen-fuel (HVOF) and modern high-velocity air-fuel (HVAF) spray processes. Two materials with standard Cr3C2–25NiCr composition (porous and dense), a Cr3C2–50NiCrMoNb and Cr3C2–37WC–18NiCoCr materials were sprayed in addition to the reference WC-10Co4Cr material. The Cr3C2–50NiCrMoNb had a higher content of the Ni-based metal matrix compared to standard Cr3C2–25NiCr composition for added corrosion resistance, while the Cr3C2–37WC–18NiCoCr material contained additional tungsten carbide (WC) particles to improve the wear resistance. In abrasion and dry particle erosion, the Cr3C2–50NiCrMoNb coatings showed a higher degree of plastic deformation and increased material loss, whereas the Cr3C2–37WC–18NiCoCr coating had wear resistance between the standard Cr3C2–25NiCr and reference WC-10Co4Cr coatings. In cavitation erosion, the lower carbide content of Cr3C2–50NiCrMoNb coatings turned out to improve the resistance against fatigue wear due to higher fracture toughness. Overall, the HVAF sprayed coatings had higher elastic modulus, higher fracture toughness, equal or higher abrasion and erosion resistance, and higher cavitation erosion resistance compared to the HVOF sprayed counterparts.",

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language = "English",

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KW - Abrasion

KW - Cavitation erosion

KW - Coating

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A study of Cr3C2-based HVOF- and HVAF-sprayed coatings: Abrasion, dry particle erosion and cavitation erosion resistance

Abstract

Funding

Keywords

Publication forum classification

ASJC Scopus subject areas

Access to Document

Fingerprint

Equipment

Coating techniques

Tribology and wear testing

Cite this

A study of Cr₃C₂-based HVOF- and HVAF-sprayed coatings: Abrasion, dry particle erosion and cavitation erosion resistance