Effects of abrasive particles on the particulate matter emission of brake friction composites

Wansu Song, Jaehyun Gweon, Jongsung Park, Sung Uk Kwon, Jung Ju Lee, Yun Cheol Kim, Ho Jang

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


The correlation between the type of abrasive in the brake friction composite and the braking induced emission was studied. Brake pads with four different abrasives; silicon carbide, alumina, zircon, and magnesia, were evaluated using a reduced scale dynamometer with an airborne particle counter. The results indicated that the particle abrasivity, comprising aspects such as hardness, fracture toughness, and angularity, strongly affected the disc wear and airborne particle emission, whereas the pad wear was more influenced by the strength of the friction film that was changed by the iron moved from the grey iron disc. The fracture toughness of the abrasives had a significant effect on the disc wear rate and mass concentration of airborne wear particles emitted during brake application. In contrast, the number concentration was considerably influenced by the wear mode of the abrasives against the grey iron disc.

Original languageEnglish
Article number204436
Publication statusPublished - 2022 Sept 15

Bibliographical note

Publisher Copyright:
© 2022 Elsevier B.V.


  • Abrasives
  • Abrasivity
  • Friction composites
  • Particulate matter
  • Surface topography

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry


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