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Process Parameter Impact on Suspension-HVOF-Sprayed Cr2O3 Coatings

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Process Parameter Impact on Suspension-HVOF-Sprayed Cr2O3 Coatings. / Kiilakoski, Jarkko; Trache, Richard; Björklund, Stefan; Joshi, Shrikant; Vuoristo, Petri.

In: Journal of Thermal Spray Technology, 2019.

Research output: Contribution to journalArticleScientificpeer-review

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Kiilakoski, Jarkko ; Trache, Richard ; Björklund, Stefan ; Joshi, Shrikant ; Vuoristo, Petri. / Process Parameter Impact on Suspension-HVOF-Sprayed Cr2O3 Coatings. In: Journal of Thermal Spray Technology. 2019.

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@article{826b3abc8bb247cf969071c5e5ddbb63,
title = "Process Parameter Impact on Suspension-HVOF-Sprayed Cr2O3 Coatings",
abstract = "Chromium oxide (Cr2O3) is commonly used as an atmospheric plasma-sprayed (APS) coating from powder feedstock in applications requiring resistance to sliding wear and corrosion, as well as amenability to texturing, e.g., in anilox rolls. Recently, high-velocity oxy-fuel spray methods involving suspension feedstock have been considered an extremely promising alternative to produce denser and more homogeneous chromium oxide coatings with lower as-sprayed surface roughness, higher hardness and potentially superior wear performance compared to conventional APS-sprayed coatings. In this study, the impact of process parameters namely auxiliary air cleaning nozzles and a transverse air curtain on suspension high-velocity oxy-fuel-sprayed Cr2O3 suspensions is presented. The produced coatings are characterized for their microstructure, mechanical properties and wear resistance by cavitation erosion. The results reveal the importance of optimized air nozzles and air curtain to achieve a vastly improved coating structure and performance.",
keywords = "CrO, influence of spray parameters, mechanical properties, SHVOF, suspension spraying",
author = "Jarkko Kiilakoski and Richard Trache and Stefan Bj{\"o}rklund and Shrikant Joshi and Petri Vuoristo",
year = "2019",
doi = "10.1007/s11666-019-00940-7",
language = "English",
journal = "Journal of Thermal Spray Technology",
issn = "1059-9630",
publisher = "ASM International",

}

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TY - JOUR

T1 - Process Parameter Impact on Suspension-HVOF-Sprayed Cr2O3 Coatings

AU - Kiilakoski, Jarkko

AU - Trache, Richard

AU - Björklund, Stefan

AU - Joshi, Shrikant

AU - Vuoristo, Petri

PY - 2019

Y1 - 2019

N2 - Chromium oxide (Cr2O3) is commonly used as an atmospheric plasma-sprayed (APS) coating from powder feedstock in applications requiring resistance to sliding wear and corrosion, as well as amenability to texturing, e.g., in anilox rolls. Recently, high-velocity oxy-fuel spray methods involving suspension feedstock have been considered an extremely promising alternative to produce denser and more homogeneous chromium oxide coatings with lower as-sprayed surface roughness, higher hardness and potentially superior wear performance compared to conventional APS-sprayed coatings. In this study, the impact of process parameters namely auxiliary air cleaning nozzles and a transverse air curtain on suspension high-velocity oxy-fuel-sprayed Cr2O3 suspensions is presented. The produced coatings are characterized for their microstructure, mechanical properties and wear resistance by cavitation erosion. The results reveal the importance of optimized air nozzles and air curtain to achieve a vastly improved coating structure and performance.

AB - Chromium oxide (Cr2O3) is commonly used as an atmospheric plasma-sprayed (APS) coating from powder feedstock in applications requiring resistance to sliding wear and corrosion, as well as amenability to texturing, e.g., in anilox rolls. Recently, high-velocity oxy-fuel spray methods involving suspension feedstock have been considered an extremely promising alternative to produce denser and more homogeneous chromium oxide coatings with lower as-sprayed surface roughness, higher hardness and potentially superior wear performance compared to conventional APS-sprayed coatings. In this study, the impact of process parameters namely auxiliary air cleaning nozzles and a transverse air curtain on suspension high-velocity oxy-fuel-sprayed Cr2O3 suspensions is presented. The produced coatings are characterized for their microstructure, mechanical properties and wear resistance by cavitation erosion. The results reveal the importance of optimized air nozzles and air curtain to achieve a vastly improved coating structure and performance.

KW - CrO

KW - influence of spray parameters

KW - mechanical properties

KW - SHVOF

KW - suspension spraying

U2 - 10.1007/s11666-019-00940-7

DO - 10.1007/s11666-019-00940-7

M3 - Article

JO - Journal of Thermal Spray Technology

JF - Journal of Thermal Spray Technology

SN - 1059-9630

ER -