Effect of space fillers in brake friction composites on airborne particle emission: A case study with BaSO4, Ca(OH)2, and CaCO3

Jongsung Park; Jaehyun Gweon; Hyungjo Seo; Wansu Song; Donggyu Lee; Jinsoo Choi; Yun Cheol Kim; Ho Jang

doi:10.1016/j.triboint.2021.107334

Effect of space fillers in brake friction composites on airborne particle emission: A case study with BaSO₄, Ca(OH)₂, and CaCO₃

Jongsung Park, Jaehyun Gweon, Hyungjo Seo, Wansu Song, Donggyu Lee, Jinsoo Choi, Yun Cheol Kim, Ho Jang

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

This study investigated particulate matter (PM) produced during brake application, focusing on the effect of space fillers in low-steel friction composites. The composites ranked in terms of brake emissions in a descending order were BaSO₄, Ca(OH)₂, and CaCO₃. CaCO₃ produced thicker friction films on the steel fibres than Ca(OH)₂, whereas bare steel fibres were found with BaSO₄, indicating strong effects of the filler-dependent coverup layers, which was confirmed by microhardness tests. The filler effect on PM suggests that proper selection of space fillers can reduce brake emissions from grey iron discs by preventing direct adhesion with steel fibres.

Original language	English
Article number	107334
Journal	Tribology International
Volume	165
DOIs	https://doi.org/10.1016/j.triboint.2021.107334
Publication status	Published - 2022 Jan

Bibliographical note

Publisher Copyright:
© 2021 Elsevier Ltd

Keywords

Brake friction composite
Contact plateaus
Space filler
Steel fibre

ASJC Scopus subject areas

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

Access to Document

10.1016/j.triboint.2021.107334

Cite this

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title = "Effect of space fillers in brake friction composites on airborne particle emission: A case study with BaSO4, Ca(OH)2, and CaCO3",

abstract = "This study investigated particulate matter (PM) produced during brake application, focusing on the effect of space fillers in low-steel friction composites. The composites ranked in terms of brake emissions in a descending order were BaSO4, Ca(OH)2, and CaCO3. CaCO3 produced thicker friction films on the steel fibres than Ca(OH)2, whereas bare steel fibres were found with BaSO4, indicating strong effects of the filler-dependent coverup layers, which was confirmed by microhardness tests. The filler effect on PM suggests that proper selection of space fillers can reduce brake emissions from grey iron discs by preventing direct adhesion with steel fibres.",

keywords = "Brake friction composite, Contact plateaus, Space filler, Steel fibre",

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AU - Kim, Yun Cheol

AU - Jang, Ho

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AB - This study investigated particulate matter (PM) produced during brake application, focusing on the effect of space fillers in low-steel friction composites. The composites ranked in terms of brake emissions in a descending order were BaSO4, Ca(OH)2, and CaCO3. CaCO3 produced thicker friction films on the steel fibres than Ca(OH)2, whereas bare steel fibres were found with BaSO4, indicating strong effects of the filler-dependent coverup layers, which was confirmed by microhardness tests. The filler effect on PM suggests that proper selection of space fillers can reduce brake emissions from grey iron discs by preventing direct adhesion with steel fibres.

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