Performance of HVAF sprayed WC-10Co-4Cr coating onto cast 21-4N steel for slurry erosion: Characterization and erosion rate studies

L. Rajanna; T. G. Mamatha; M. S. Prabhuswamy; Vikrant Singh; Anuj Bansal

doi:10.1177/09544062231211717

Performance of HVAF sprayed WC-10Co-4Cr coating onto cast 21-4N steel for slurry erosion: Characterization and erosion rate studies

L. Rajanna
, T. G. Mamatha^*
, M. S. Prabhuswamy
, Vikrant Singh
, Anuj Bansal

^*Corresponding author for this work

Interdisciplinary Research Center for Advanced Materials

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

14 Scopus citations

Abstract

In this study, 86WC-10Co-4Cr powder was thermally sprayed onto cast 21-4N steel using High Velocity Air-Fuel (HVAF) technology. The deposited coating exhibited a dense structure with minimal porosity (1.0 ± 0.3%) and excellent fracture toughness (5.1 ± 0.3 MPa m^1/2). Slurry erosion tests had shown that the HVAF-coated steel had significantly improved erosion resistance compared to uncoated steel, attributed to its high hardness, fracture toughness, and dense microstructure. Statistical analysis revealed that slurry velocity and impact angle were the most influential parameters. Further, Field emission scanning electron microscope (FE-SEM) image analysis showed that the coated steel exhibited a brittle mode of material removal, while the bare steel displayed a ductile mode. Overall, the study highlights the effectiveness of HVAF-sprayed 86WC-10Co-4Cr coatings in enhancing erosion resistance, providing valuable insights into the coating’s microstructure and performance under different erosion conditions.

Original language	English
Pages (from-to)	4803-4821
Number of pages	19
Journal	Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
Volume	238
Issue number	10
DOIs	https://doi.org/10.1177/09544062231211717
State	Published - May 2024

Bibliographical note

Publisher Copyright:
© IMechE 2023.

Keywords

21-4N steel
86WC-10Co-4Cr
erosion
FE-SEM
HVAF

ASJC Scopus subject areas

Mechanical Engineering

Access to Document

10.1177/09544062231211717

Cite this

Rajanna, L., Mamatha, T. G., Prabhuswamy, M. S., Singh, V., & Bansal, A. (2024). Performance of HVAF sprayed WC-10Co-4Cr coating onto cast 21-4N steel for slurry erosion: Characterization and erosion rate studies. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 238(10), 4803-4821. https://doi.org/10.1177/09544062231211717

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title = "Performance of HVAF sprayed WC-10Co-4Cr coating onto cast 21-4N steel for slurry erosion: Characterization and erosion rate studies",

abstract = "In this study, 86WC-10Co-4Cr powder was thermally sprayed onto cast 21-4N steel using High Velocity Air-Fuel (HVAF) technology. The deposited coating exhibited a dense structure with minimal porosity (1.0 ± 0.3\%) and excellent fracture toughness (5.1 ± 0.3 MPa m1/2). Slurry erosion tests had shown that the HVAF-coated steel had significantly improved erosion resistance compared to uncoated steel, attributed to its high hardness, fracture toughness, and dense microstructure. Statistical analysis revealed that slurry velocity and impact angle were the most influential parameters. Further, Field emission scanning electron microscope (FE-SEM) image analysis showed that the coated steel exhibited a brittle mode of material removal, while the bare steel displayed a ductile mode. Overall, the study highlights the effectiveness of HVAF-sprayed 86WC-10Co-4Cr coatings in enhancing erosion resistance, providing valuable insights into the coating{\textquoteright}s microstructure and performance under different erosion conditions.",

keywords = "21-4N steel, 86WC-10Co-4Cr, erosion, FE-SEM, HVAF",

author = "L. Rajanna and Mamatha, \{T. G.\} and Prabhuswamy, \{M. S.\} and Vikrant Singh and Anuj Bansal",

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Rajanna, L, Mamatha, TG, Prabhuswamy, MS, Singh, V & Bansal, A 2024, 'Performance of HVAF sprayed WC-10Co-4Cr coating onto cast 21-4N steel for slurry erosion: Characterization and erosion rate studies', Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, vol. 238, no. 10, pp. 4803-4821. https://doi.org/10.1177/09544062231211717

Performance of HVAF sprayed WC-10Co-4Cr coating onto cast 21-4N steel for slurry erosion: Characterization and erosion rate studies. / Rajanna, L.; Mamatha, T. G.; Prabhuswamy, M. S. et al.
In: Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, Vol. 238, No. 10, 05.2024, p. 4803-4821.

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

TY - JOUR

T1 - Performance of HVAF sprayed WC-10Co-4Cr coating onto cast 21-4N steel for slurry erosion

T2 - Characterization and erosion rate studies

AU - Rajanna, L.

AU - Mamatha, T. G.

AU - Prabhuswamy, M. S.

AU - Singh, Vikrant

AU - Bansal, Anuj

PY - 2024/5

Y1 - 2024/5

N2 - In this study, 86WC-10Co-4Cr powder was thermally sprayed onto cast 21-4N steel using High Velocity Air-Fuel (HVAF) technology. The deposited coating exhibited a dense structure with minimal porosity (1.0 ± 0.3%) and excellent fracture toughness (5.1 ± 0.3 MPa m1/2). Slurry erosion tests had shown that the HVAF-coated steel had significantly improved erosion resistance compared to uncoated steel, attributed to its high hardness, fracture toughness, and dense microstructure. Statistical analysis revealed that slurry velocity and impact angle were the most influential parameters. Further, Field emission scanning electron microscope (FE-SEM) image analysis showed that the coated steel exhibited a brittle mode of material removal, while the bare steel displayed a ductile mode. Overall, the study highlights the effectiveness of HVAF-sprayed 86WC-10Co-4Cr coatings in enhancing erosion resistance, providing valuable insights into the coating’s microstructure and performance under different erosion conditions.

AB - In this study, 86WC-10Co-4Cr powder was thermally sprayed onto cast 21-4N steel using High Velocity Air-Fuel (HVAF) technology. The deposited coating exhibited a dense structure with minimal porosity (1.0 ± 0.3%) and excellent fracture toughness (5.1 ± 0.3 MPa m1/2). Slurry erosion tests had shown that the HVAF-coated steel had significantly improved erosion resistance compared to uncoated steel, attributed to its high hardness, fracture toughness, and dense microstructure. Statistical analysis revealed that slurry velocity and impact angle were the most influential parameters. Further, Field emission scanning electron microscope (FE-SEM) image analysis showed that the coated steel exhibited a brittle mode of material removal, while the bare steel displayed a ductile mode. Overall, the study highlights the effectiveness of HVAF-sprayed 86WC-10Co-4Cr coatings in enhancing erosion resistance, providing valuable insights into the coating’s microstructure and performance under different erosion conditions.

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IS - 10

ER -

Performance of HVAF sprayed WC-10Co-4Cr coating onto cast 21-4N steel for slurry erosion: Characterization and erosion rate studies

Abstract

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Keywords

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