Effect of disc materials on brake emission during moderate-temperature braking

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

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


Disc material effects on particle emission were investigated under moderate braking conditions using grey iron discs with different microstructures and a ceramic disc. The results demonstrate that brake emissions are strongly affected by disc hardness and the iron transferred to the pad surface. The transferred iron increased brake emissions due to the reduced cohesive strength of the plateaus on the pad surface. The grey iron microstructure also affected the ultrafine particle concentration owing to the graphite flakes. Conversely, the ceramic disc exhibited significantly lower brake emissions due to high wear resistance and no iron transfer to the pad surface.

Original languageEnglish
Article number107185
JournalTribology International
Publication statusPublished - 2021 Nov

Bibliographical note

Publisher Copyright:
© 2021 Elsevier Ltd


  • Brake disc
  • Brake pad
  • Contact plateaus
  • Third body
  • Wear particles

ASJC Scopus subject areas

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


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