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Mechanical and tribological properties of a WC-based HVOF spray coated brake disc

  • Halil Kılıç EMAIL logo , Cenk Mısırlı , İbrahim Mutlu and Mustafa Timur
Published/Copyright: August 5, 2022
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Materials Testing
From the journal Materials Testing Volume 64 Issue 8

Abstract

Thermally sprayed WC-based coating systems are generally used to increase engineering components’ wear resistance. This research presents the results of a comparative study conducted to examine the tribological characteristics of a new brake disc created with thermal sprayed WC-10Co4Cr coating. This study implemented braking tests on the WC-10Co4Cr coated brake disc against commercial friction material on a laboratory scale disc-pad tester and compared the findings with the reference disc. The coating system was created with a high velocity oxygen-fuel spraying on a cast iron disc. The braking tests followed the sections of the SAE-J2430 test procedure. The microstructure, phase composition and properties of the coating were characterized by SEM/EDS, XRD and Vickers microstructure. The effect of carbide coating on the friction and wear behaviour of the tribological system was examined. The WC-10Co4Cr coating has increased the hardness by 3 times with a thickness of 300 μm compared to the cast iron surface. The amount of wear in the coated disc (CD) was reduced by about 85% compared to the reference disc (BD). The coefficient of frictions of BD and CD was found to be in the range of 0.43–0.61 and 0.47–0.62, respectively. The inclusion of hard phases (WC and W2C) in the disc coating played an important role in improving the sliding wear resistance by maintaining the coefficient of friction of the brake disc at an acceptable level. In brief, carbide coating could be claimed to be promising for challenging braking implementations.

Keywords: brake disc; HVOF; tribology; WC-CoCr coating; wear
Corresponding author: Halil Kılıç, Department of Machine, Technical Sciences Vocational School, Kırklareli University, Kirklareli, Turkey, E-mail:

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: None declared.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Published Online: 2022-08-05
Published in Print: 2022-08-26

© 2022 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Effect of heat treatment on the electrical and mechanical properties of a Cu–Ni–Si cast alloy
  3. Effect of isothermal heat treatments under Ms temperature on the microstructures and mechanical properties of commercial high-silicon spring steel
  4. Effect of austenitizing temperature on microstructure and properties of a high-speed cobalt steel
  5. Effect of hot rolling process parameters on the microstructure and mechanical properties of continuously cooled low-carbon high-strength low-alloy (HSLA) steel
  6. Mechanical and tribological properties of a WC-based HVOF spray coated brake disc
  7. Microstructure and mechanical properties of AISI 304/DUROSTAT 500 steel double-sided TIG welds
  8. A Nelder Mead-infused INFO algorithm for optimization of mechanical design problems
  9. Modeling of hexagonal honeycomb hybrids for variation of Poisson’s ratio
  10. Effect of elevated test temperature on the tensile strength and failure mechanism of hot-pressed dissimilar joints of laser ablation-treated AA5754-H111 and thermoplastic composite
  11. Steel shot peening effects on friction stir welded AA2014-T6 aluminum alloys
  12. Improvement of incremental sheet metal forming with the help of a pressurised fluid system
  13. Nugget formation, microstructural features and strength of resistance spot welded cold-rolled dual-phase steel lap joints for automotive applications
  14. African vultures optimization algorithm for optimization of shell and tube heat exchangers
  15. Effect of welding current on properties of activated gas tungsten arc super duplex stainless steel welds
https://doi.org/10.1515/mt-2022-0077
Keywords for this article
brake disc; HVOF; tribology; WC-CoCr coating; wear

Articles in the same Issue

  1. Frontmatter
  2. Effect of heat treatment on the electrical and mechanical properties of a Cu–Ni–Si cast alloy
  3. Effect of isothermal heat treatments under Ms temperature on the microstructures and mechanical properties of commercial high-silicon spring steel
  4. Effect of austenitizing temperature on microstructure and properties of a high-speed cobalt steel
  5. Effect of hot rolling process parameters on the microstructure and mechanical properties of continuously cooled low-carbon high-strength low-alloy (HSLA) steel
  6. Mechanical and tribological properties of a WC-based HVOF spray coated brake disc
  7. Microstructure and mechanical properties of AISI 304/DUROSTAT 500 steel double-sided TIG welds
  8. A Nelder Mead-infused INFO algorithm for optimization of mechanical design problems
  9. Modeling of hexagonal honeycomb hybrids for variation of Poisson’s ratio
  10. Effect of elevated test temperature on the tensile strength and failure mechanism of hot-pressed dissimilar joints of laser ablation-treated AA5754-H111 and thermoplastic composite
  11. Steel shot peening effects on friction stir welded AA2014-T6 aluminum alloys
  12. Improvement of incremental sheet metal forming with the help of a pressurised fluid system
  13. Nugget formation, microstructural features and strength of resistance spot welded cold-rolled dual-phase steel lap joints for automotive applications
  14. African vultures optimization algorithm for optimization of shell and tube heat exchangers
  15. Effect of welding current on properties of activated gas tungsten arc super duplex stainless steel welds
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