Tribological properties of potassium titanate in the brake friction material; morphological effects

Keun Hyung Cho, Min Hyung Cho, Seong Jin Kim, Ho Jang

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

The tribological characteristics of brake friction materials containing different shapes of potassium titanate were investigated. They contain typical ingredients of a non-asbestos organic based friction material, including potassium titanate in the shapes of whiskers, platelets, and splinters. A Krauss type friction tester is used to obtain thermal stability and wear resistance of the friction materials at elevated temperatures. The results showed that the morphology of potassium titanate plays an important role in the formation of contact plateaus and transfer films on the rubbing surfaces, which are closely associated with tribological properties. The friction material with splinter shape potassium titanate shows better friction stability and improved wear resistance compared to those containing other types of potassium titanate due to larger contact plateaus and stable friction films at the sliding interface. On the other hand, the transfer films produced by the friction materials with platelet or whisker potassium titanate are not sustainable at elevated temperatures since they are easily detached during sliding, resulting in poor wear resistance.

Original languageEnglish
Pages (from-to)59-66
Number of pages8
JournalTribology Letters
Volume32
Issue number1
DOIs
Publication statusPublished - 2008 Oct 1

Fingerprint

Friction materials
brakes
Brakes
Potassium
potassium
friction
Wear resistance
wear resistance
Friction
Platelets
platelets
sliding
plateaus
potassium titanate
Thermodynamic stability
test equipment
ingredients
Temperature
thermal stability
temperature

Keywords

  • Brake
  • Friction materials
  • Potassium titanate
  • Tribological properties
  • Wear rate

ASJC Scopus subject areas

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

Cite this

Tribological properties of potassium titanate in the brake friction material; morphological effects. / Cho, Keun Hyung; Cho, Min Hyung; Kim, Seong Jin; Jang, Ho.

In: Tribology Letters, Vol. 32, No. 1, 01.10.2008, p. 59-66.

Research output: Contribution to journalArticle

Cho, Keun Hyung ; Cho, Min Hyung ; Kim, Seong Jin ; Jang, Ho. / Tribological properties of potassium titanate in the brake friction material; morphological effects. In: Tribology Letters. 2008 ; Vol. 32, No. 1. pp. 59-66.
@article{9e82170e093046fdb8598724b65baad1,
title = "Tribological properties of potassium titanate in the brake friction material; morphological effects",
abstract = "The tribological characteristics of brake friction materials containing different shapes of potassium titanate were investigated. They contain typical ingredients of a non-asbestos organic based friction material, including potassium titanate in the shapes of whiskers, platelets, and splinters. A Krauss type friction tester is used to obtain thermal stability and wear resistance of the friction materials at elevated temperatures. The results showed that the morphology of potassium titanate plays an important role in the formation of contact plateaus and transfer films on the rubbing surfaces, which are closely associated with tribological properties. The friction material with splinter shape potassium titanate shows better friction stability and improved wear resistance compared to those containing other types of potassium titanate due to larger contact plateaus and stable friction films at the sliding interface. On the other hand, the transfer films produced by the friction materials with platelet or whisker potassium titanate are not sustainable at elevated temperatures since they are easily detached during sliding, resulting in poor wear resistance.",
keywords = "Brake, Friction materials, Potassium titanate, Tribological properties, Wear rate",
author = "Cho, {Keun Hyung} and Cho, {Min Hyung} and Kim, {Seong Jin} and Ho Jang",
year = "2008",
month = "10",
day = "1",
doi = "10.1007/s11249-008-9362-x",
language = "English",
volume = "32",
pages = "59--66",
journal = "Tribology Letters",
issn = "1023-8883",
publisher = "Springer New York",
number = "1",

}

TY - JOUR

T1 - Tribological properties of potassium titanate in the brake friction material; morphological effects

AU - Cho, Keun Hyung

AU - Cho, Min Hyung

AU - Kim, Seong Jin

AU - Jang, Ho

PY - 2008/10/1

Y1 - 2008/10/1

N2 - The tribological characteristics of brake friction materials containing different shapes of potassium titanate were investigated. They contain typical ingredients of a non-asbestos organic based friction material, including potassium titanate in the shapes of whiskers, platelets, and splinters. A Krauss type friction tester is used to obtain thermal stability and wear resistance of the friction materials at elevated temperatures. The results showed that the morphology of potassium titanate plays an important role in the formation of contact plateaus and transfer films on the rubbing surfaces, which are closely associated with tribological properties. The friction material with splinter shape potassium titanate shows better friction stability and improved wear resistance compared to those containing other types of potassium titanate due to larger contact plateaus and stable friction films at the sliding interface. On the other hand, the transfer films produced by the friction materials with platelet or whisker potassium titanate are not sustainable at elevated temperatures since they are easily detached during sliding, resulting in poor wear resistance.

AB - The tribological characteristics of brake friction materials containing different shapes of potassium titanate were investigated. They contain typical ingredients of a non-asbestos organic based friction material, including potassium titanate in the shapes of whiskers, platelets, and splinters. A Krauss type friction tester is used to obtain thermal stability and wear resistance of the friction materials at elevated temperatures. The results showed that the morphology of potassium titanate plays an important role in the formation of contact plateaus and transfer films on the rubbing surfaces, which are closely associated with tribological properties. The friction material with splinter shape potassium titanate shows better friction stability and improved wear resistance compared to those containing other types of potassium titanate due to larger contact plateaus and stable friction films at the sliding interface. On the other hand, the transfer films produced by the friction materials with platelet or whisker potassium titanate are not sustainable at elevated temperatures since they are easily detached during sliding, resulting in poor wear resistance.

KW - Brake

KW - Friction materials

KW - Potassium titanate

KW - Tribological properties

KW - Wear rate

UR - http://www.scopus.com/inward/record.url?scp=53149135377&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=53149135377&partnerID=8YFLogxK

U2 - 10.1007/s11249-008-9362-x

DO - 10.1007/s11249-008-9362-x

M3 - Article

AN - SCOPUS:53149135377

VL - 32

SP - 59

EP - 66

JO - Tribology Letters

JF - Tribology Letters

SN - 1023-8883

IS - 1

ER -