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Quantification of ultrafine airborne particulate matter generated by the wear of car brake materials
KTH, Skolan för industriell teknik och management (ITM), Maskinkonstruktion (Inst.).ORCID-id: 0000-0002-5259-1426
KTH, Skolan för industriell teknik och management (ITM), Maskinkonstruktion (Inst.).ORCID-id: 0000-0003-2489-0688
2017 (Engelska)Ingår i: Wear, ISSN 0043-1648, E-ISSN 1873-2577, Vol. 374-375, s. 92-96Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The wear of car brakes is one of the main sources of airborne particulate matter in urban environments. Ultrafine wear particles are of special environmental interest since they can easily penetrate the human body through inhalation and cause various diseases. In the present study, the contribution of ultrafine particles to airborne particulate matter emitted from car brake materials was investigated under different friction conditions. Particles were generated using a pin-on-disc machine located in a sealed chamber and analysed in terms of number, volume and mass concentrations. It was found that temperature has a strong influence on the size distribution of the emitted particles. At temperatures below 200 °C, the ultrafine particles make no measurable contribution to the mass concentration of airborne particles with diameters smaller than 10 µm (PM10). However, at temperatures above 200 °C, the mass fraction of the ultrafine particles in PM10 reaches tens of percent. In general, this fraction increases with the temperature and decreases with the sliding duration. The mass contribution of ultrafine wear particles to PM10 is substantial, and it should not be neglected in environmental and tribological studies.

Ort, förlag, år, upplaga, sidor
Elsevier, 2017. Vol. 374-375, s. 92-96
Nyckelord [en]
Brake wear, Pin-on-disc, PM10, Ultrafine particles, Wear particles, Airborne particles
Nationell ämneskategori
Tribologi (ytteknik omfattande friktion, nötning och smörjning)
Identifikatorer
URN: urn:nbn:se:kth:diva-200867DOI: 10.1016/j.wear.2017.01.003ISI: 000395954700012Scopus ID: 2-s2.0-85009104895OAI: oai:DiVA.org:kth-200867DiVA, id: diva2:1072077
Forskningsfinansiär
EU, FP7, Sjunde ramprogrammet, 324385
Anmärkning

QC 20170207

Tillgänglig från: 2017-02-07 Skapad: 2017-02-03 Senast uppdaterad: 2019-10-09Bibliografiskt granskad

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Nosko, OleksiiOlofsson, Ulf
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Maskinkonstruktion (Inst.)
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Wear
Tribologi (ytteknik omfattande friktion, nötning och smörjning)

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