Effect of disc material on particulate matter emissions during high-temperature braking

Hyungjo Seo, Byungsoo Joo, Jongsung Park, Yun Cheol Kim, Jung Ju Lee, Ho Jang

Research output: Contribution to journalArticlepeer-review

Abstract

Brake emissions during high-temperature brake applications were investigated using four different brake discs—FC170 and FC250 Gy iron discs, oxynitride-coated gray iron discs, and ceramic discs. The brake emission tests were performed with a low-steel brake pad using a 1/5 scale brake dynamometer with a high resolution electrical low-pressure impactor. The highest number concentration was observed using ceramic discs, whereas the gray iron discs produced higher mass concentrations than others. The effect of the disc material on brake emissions at elevated temperatures was primarily determined by the thermal conductivity of the disc and the time- and temperature-dependent variations of contact plateaus on the pad surface.

Original languageEnglish
Article number106713
JournalTribology International
Volume154
DOIs
Publication statusPublished - 2021 Feb

Keywords

  • +)
  • Brake pad
  • Contact area
  • High resolution electrical low-pressure impactor (HR-ELPI
  • Initial brake temperature (IBT)
  • Oxynitride-coated gray iron (OCG)
  • Particles
  • Particulate matter (PM)
  • Thermal conductivity
  • Thermogravimetric analysis (TGA)

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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