期刊
TRIBOLOGY INTERNATIONAL
卷 118, 期 -, 页码 360-367出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2017.10.011
关键词
Airborne particles; Pin-on-disc; Humidity; Brake block
资金
- KTH Railway Group
- Stockholm Country Council
- Traffic Administration
- China Scholarship Council (CSC)
- Swedish Transport Administration
A pin-on-disc tribometer placed in a one-way ventilated chamber was used to investigate the effect of relative humidity on the tribology and airborne particle emission of three commercial railway brake block materials (grey cast iron, organic composite, and sintered). Cast iron showed the highest friction coefficient, particle emission and wear loss and organic composite exhibited the lowest. The generation of oxide layers on the worn cast iron surface resulted in a decrease in friction, particle emission and wear. Moisture adsorption by the organic composite leads to decreased friction coefficient and particle emission with increasing humidity. Relative humidity does not affect the friction coefficient of the sintered brake block, whose particle emission and wear loss significantly decline with increasing relative humidity.
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