Performance of HVAF sprayed WC-10Co-4Cr coating onto cast 21-4N steel for slurry erosion: Characterization and erosion rate studies-Reference-Cited by-同舟云学术

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

Published:2023-12-04 Issue: Volume: Page:
ISSN:0954-4062
Container-title:Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
language:en
Short-container-title:Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science

Author:

Rajanna L¹²^ORCID,Mamatha TG²,Prabhuswamy MS¹,Singh Vikrant³,Bansal Anuj³^ORCID

Affiliation:

1. Department of Mechanical Engineering, JSS Science and Technology University, Mysuru, Karnataka, India

2. Department of Mechanical Engineering, JSS Academy of Technical Education, Noida, Uttar Pradesh, India

3. Sant Longowal Institute of Engineering and Technology, Longowal, Sangrur, Punjab, India

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’s microstructure and performance under different erosion conditions.

Publisher

SAGE Publications

Subject

Mechanical Engineering

Link

http://journals.sagepub.com/doi/pdf/10.1177/09544062231211717

Reference57 articles.

1. Slurry erosion behavior of hydro-turbine steel treated cryogenically at different soaking periods

2. Experimental study on the erosion behavior of WC-based high-velocity oxygen-fuel spray coating

3. Hydro-abrasive erosion in hydro turbines: a review

4. Parametric Study of Slurry-Erosion of Hydroturbine Steels with and without Detonation Gun Spray Coatings using Taguchi Technique

5. High-energy particle impact wear resistance of hard coatings and their application in hydroturbines