Ultrafine Particle Formation from Wear

Jansson, AndersStockholms universitet,Institutionen för tillämpad miljövetenskap (ITM) (author)

QC 20110218
authorCount :6
Much attention is given to the consequences of airborne particles on human health and well-being. Wear is one source of airborne particles and contributions in the urban environments from wheel-to-rail contacts and disc brakes cannot be neglected. Traditionally, mechanical wear has been associated with the generation of particles of diameters of some microns. However, the research described has found ultrafine particle generation from wear processes. Particle generation from wear was measured under controlled laboratory conditions. The wear was created through sliding contact in a tribometer (type "pin-on-disc") with different materials and with different sliding velocities and pressures, to represent rail traffic and automobile disc braking. Particle concentrations and size distributions in the air were determined for particle diameters from 10 nm up to more than 10 mu m. For most materials and conditions three particle size modes were found: one at 50-100 nm, one at a few hundred nm and one at a few mu m particle diameter.

TEKNIK OCH TEKNOLOGIER Materialteknik Annan materialteknik hsv//swe
ENGINEERING AND TECHNOLOGY Materials Engineering Other Materials Engineering hsv//eng
airborne particles
car brakes
generation
particle size
ultrafine
railroad
wear
TECHNOLOGY
TEKNIKVETENSKAP

Olander, LarsKTH,Installationsteknik(Swepub:kth)u1rlord2 (author)
Olofsson, UlfKTH,Maskinelement(Swepub:kth)u10qpddv (author)
Sundh, JonKTH,Maskinelement(Swepub:kth)u18eggm4 (author)
Söderberg, Anders,1977-KTH,Maskinelement(Swepub:kth)u1a3o250 (author)
Wahlström, JensKTH,Maskinkonstruktion (Inst.)(Swepub:kth)u1yf14yg (author)
Stockholms universitetInstitutionen för tillämpad miljövetenskap (ITM) (creator_code:org_t)

In:The International Journal of Ventilation: Informa UK Limited9:1, s. 83-881473-33152044-4044

By the author/editor: Jansson, Anders; Olander, Lars; Olofsson, Ulf; Sundh, Jon; Söderberg, Ander ...; Wahlström, Jens

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Materials Engine ...; and Other Materials ...

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