THE INFLUENCE OF THE SURFACE LAYER STRUCTURE IN DISC BRAKE PADS ON THEIR TRIBOLOGICAL PROPERTIES
Journal Title: Tribologia - Year 2016, Vol 267, Issue 3
Abstract
The article presents the results of the stand tribological investigation and microscopic observations of brake pad materials for automotive disc brakes. The reasons for the scatter of the friction coefficient value are analysed. The results of the brake pads’ friction surface topography observations and chemical constitution are presented. The investigations were carried out with scanning electron microscopy SEM and energy dispersive X-ray spectroscopy EDS. The point, line, and surface analysis of friction layer were done. The average contents of the chemical elements on the friction surface are presented. The heterogeneous nature of the structure on the friction layer was observed. The analysis has shown that brake pads with a compact structure of friction layer and large quantity components (10 components with more than 1% content each) had a smaller scatter of the coefficient of friction value in relation to the materials with a loose structure and less quantity components. The next part of the article presents the structure and geometric parameter products of the wear of the friction material. The problem concerning the quantity limitation of the wear particles entering the environment as dust was discussed.<br/><br/>
Authors and Affiliations
Andrzej GAJEK, Wojciech SZCZYPIŃSKI-SALA
Keywords
Related Articles
- EP ID EP246190
- DOI 10.5604/01.3001.0010.7294
- Views 34
- Downloads 0
Antiwear properties of lubricants modified with metal particles
The paper presents an influence of lubricant modification with metal particles addition on wear process of tribological couplings elements. Combinations of various materials working in mixed friction condition at rotatio...
TRIBOLOGICAL CHARACTERISTICS OF GREASES PREPARED ON MODIFIED VEGETABLE OILS
The study investigated the usefulness of modified vegetable oils as disperse-phase grease. The influence of these oils on tribological characteristics and their resistance to oxidation were studied. To determine the oxid...
METODA OCENY TRWAŁOŚCI POWŁOK MALARSKICH PODDANYCH ODDZIAŁYWANIU MASY MINERALNEJ
W pracy omówiono problemy dotyczące usterek pasywnych powłok malarskich. Zidentyfikowano 4 przyczyny ich powstawania: konstrukcyjne, technologiczne, eksploatacyjne i zużyciowe. Omówiono znormalizowane metody oceny jakośc...
METHODOLOGICAL ASPECTS OF DETERMINING THE COEFFICIENT OF KINETIC FRICTION OF WHEAT KERNELS ON AN INCLINED PLANE
One of the most popular methods of determining the coefficient of kinetic friction between a pair of solid objects involves an inclined plane. However, manual measurements of the time taken by a particle to travel a cert...
OPTIMIZING DEPOSITION PARAMETERS OF AlCrTiN COATINGS FOR IMPROVING THE WEAR RESISTANCE AT ELEVATED TEMPERATURES
This article presents the investigation performed to develop process parameters to produce AlCrTiN coatings with improved mechanical properties and the best wear resistance using the cathodic arc evaporation technique. T...