Publication result detail

The role of constituents contained in water–based friction modifiers for top–of–rail application

GALAS, R.; KVARDA, D.; OMASTA, M.; KŘUPKA, I.; HARTL, M.

Original Title

The role of constituents contained in water–based friction modifiers for top–of–rail application

English Title

The role of constituents contained in water–based friction modifiers for top–of–rail application

Type

WoS Article

Original Abstract

Top–of–rail friction modifiers (FMs) represent an up–to–date approach to managing adhesion in the wheel–rail interface. The aim of this study was to investigate the role of typical water–based FM constituents in terms of adhesion and film formation. The ball–on–disc apparatus was employed to reach a rolling–sliding contact. The friction behaviour of various complex substances with different compositions was investigated in terms of adhesion and wear. The results showed that less complex substances, e.g. free of particles for friction modification, can provide required adhesion. Moreover, adhesion was not markedly decreased when the contact was overdosed. The performance of water–based substance/FM is greatly affected by evaporation of water. Surface analyses showed that substances are able to reduce wear and surface damage.

English abstract

Top–of–rail friction modifiers (FMs) represent an up–to–date approach to managing adhesion in the wheel–rail interface. The aim of this study was to investigate the role of typical water–based FM constituents in terms of adhesion and film formation. The ball–on–disc apparatus was employed to reach a rolling–sliding contact. The friction behaviour of various complex substances with different compositions was investigated in terms of adhesion and wear. The results showed that less complex substances, e.g. free of particles for friction modification, can provide required adhesion. Moreover, adhesion was not markedly decreased when the contact was overdosed. The performance of water–based substance/FM is greatly affected by evaporation of water. Surface analyses showed that substances are able to reduce wear and surface damage.

Keywords

adhesion coefficient, friction layer, friction modifier, wheel–rail tribology

Key words in English

adhesion coefficient, friction layer, friction modifier, wheel–rail tribology

Authors

GALAS, R.; KVARDA, D.; OMASTA, M.; KŘUPKA, I.; HARTL, M.

RIV year

2019

Released

01.01.2018

Publisher

Elsevier

Location

United Kingdom

ISBN

0301-679X

Periodical

Tribology International

Volume

117

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

87

Pages to

97

Pages count

11

URL

http://www.sciencedirect.com/science/article/pii/S0301679X17303973

BibTex

@article{BUT139221,
  author="Radovan {Galas} and Daniel {Kvarda} and Milan {Omasta} and Ivan {Křupka} and Martin {Hartl}",
  title="The role of constituents contained in water–based friction modifiers for top–of–rail application",
  journal="Tribology International",
  year="2018",
  volume="117",
  number="1",
  pages="87--97",
  doi="10.1016/j.triboint.2017.08.019",
  issn="0301-679X",
  url="http://www.sciencedirect.com/science/article/pii/S0301679X17303973"
}