Trošenje prstena kliznog ležaja prevučenog prevlakama TiN i TiCN u uvjetima mješovitog trenja

master's thesis

• Title (english): Wear of sliding bearing ring coated with TiN and TiCN coatings under mixed friction conditions
• Author: Matteo Martinez
• Mentor: Darko Landek (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2021-07-14, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

Trošenje materijala je jedan od najvećih uzroka troškova u u industrijskoj proizvodnji i eksploataciji proizvoda i opreme. Iako nije moguće ukloniti trošenje, moguće ga je smanjiti određenim postupcima i metodama, što je glavna tematika ovoga rada. U teorijskom dijelu rada su opisani klizni ležajevi i zahtjevi na klizne ležajeve, postupci toplinske obrade materijala za klizne ležajeve, postupci modificiranja i prevlačenja površine kliznih ležajeva te ispitivanje svojstava. U eksperimentalnom dijelu provedena su ispitivanja hrapavosti površina, prionjivosti i debljine PVD i PACVD prevlaka te ispitivanja otpornosti na adhezijsko trošenje i određivanje faktora trenja u tribo paru ležajna bronca – prevučeni prsten s i bez podmazivanja. Najmanji faktor trenja pokazao je tribopar ležajna bronca- prsten nitriran u plazmi uz podmazivanje.

Abstract (english)

Wear is one of the biggest expenses in industrialized countries. Although it’s impossible to remove wear, it is possible to decrease it with various procedures and methods, which is the main theme of this paper. The theoretical part of this paper describes plain bearings and its requirements, heat treatment procedures of plain bearings, methods of surface modifying and coating of plain bearings and characterization of the properties of plain bearings. The experimental part of this paper describes the preparation, procedure, results and discussion of the results of surface roughness, adhesion and thickness of PVD and PACVD coatings as well as adhesion wear and coefficient of friction in tribo-pair bearing bronze – coated ring, with or without lubrication. The tribo-pair plasma nitrided ring – bearing bronze exhibits the lowest coefficient of friction.

• Keywords: klizni ležaj; toplinska obrada; modificiranje; prevlačenje; hrapavost; prionjivost; debljina prevlake; adhezijsko trošenje
• Keywords (english): plain bearing; heat treatment; modifying; coating; roughness; adhesion; coat thickness; adhesion wear
• Language: croatian
• URN:NBN: urn:nbn:hr:235:395844
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2021-07-07 10:40:42