diplomsko delo
Tilen Skobir (Author), Marjan Marinšek (Mentor)

Abstract

Zavore so pomemben del vsakega vozila, saj omogočajo nadzor nad njegovo hitrostjo. V modernih avtomobilskih zavornih sistemih je več hkratno delujočih komponent, največji vpliv imata disk in zavorne ploščice. Za slednje so se v preteklosti uporabljale zmesi materialov, v katerih sta bila azbest in baker, saj so z njimi ustvarili najučinkovitejšo zavorno zmes. Zaradi znanih negativnih zdravstvenih in okoljskih vplivov se je uporaba teh dveh materialov v zavorni industriji omejila. V diplomskem delu smo obravnavali zavorne ploščice, ki so vsebovale grafen kot substitut bakra. Te vzorce smo s pomočjo elektronsko mikroskopske, termogravimetrične in termične analize poskušali okarakterizirati. Iz mikroskopskih analiz smo ugotovili, da bi za boljši pregled mikrostrukture morali najprej izločiti nekaj materialov iz torne zmesi. Podobno so pri termogravimetrični in termični analizi zavorne ploščice vsebovale preveč različnih materialov, da bi določili, katere reakcije potečejo v torni zmesi zaradi dodanega grafena.

Keywords

zavore;zavorne ploščice;grafen;vrstični elektronski mikroskop;SEM;termogravimetrična analiza;diplomska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [T. Skobir]
UDC: 620.1(043.2)
COBISS: 135062275 Link will open in a new window
Views: 29
Downloads: 15
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Other data

Secondary language: English
Secondary title: Selection of materials for brake pads in prototype race cars
Secondary abstract: Brakes are an important part of any vehicle as they enable the control of its speed. In modern automotive braking systems, there are several components working simultaneously, with the disc and brake pads having the greatest influence. For the latter, asbestos and copper have been used in the past to create the most efficient friction compound. Because of known negative health and environmental effects these materials have been withdrawn from the braking industry. In my thesis we made brake pads which contained graphene as a substitute for copper. The focus of our research was to perform electron microscopic, thermogravimetric and thermal analysis of these pads. From the microscopic analysis we discovered that to get a better view of the microstructure we should have first eliminated some of the materials for the friction mixture. Similarly in the thermogravimetric and thermal analysis, the pads contained too many different materials hence we couldn’t determine which reactions took place in the friction mixture due to the edition of graphene.
Secondary keywords: brakes;brake pads;graphene;SEM;thermogravimetric analysis;Materiali;Univerzitetna in visokošolska dela;
Type (COBISS): Bachelor thesis/paper
Study programme: 1000372
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, UNI Kemijsko inženirstvo
Pages: 33 str.
ID: 17226434