Medeiros, João Telesforo Nobrega deSantiago, Iago Henrique Lima2018-12-062018-12-062018-08-27SANTIAGO, Iago Henrique Lima. Avaliação tribológica de um compósito a base de PTFE aplicado em mancais de deslizamento. 2018. 90f. Dissertação (Mestrado em Engenharia Mecânica) - Centro de Tecnologia, Universidade Federal do Rio Grande do Norte, Natal, 2018.https://repositorio.ufrn.br/jspui/handle/123456789/26261Polymer plain bearings are often applied to submerged pumping systems. In the state of Rio Grande do Norte, there is a high demand for this type of component due to activities such as shrimp farming and nautical industry. In this context, this study aims to manufacture and apply bushings composed of PTFE + tailings of Scheelite, investigating the tribological behavior of this material when subjected to severe test conditions (high PV pair). Then, bushings made of this composite were manufactured by hot compaction and will be tested in a test rig with shaft rotational speed and load control. During the tests, the signals of vibration, temperature and sound pressure level were recorded. In addition, the dimensional variation of the bushing and its mass loss were evaluated in order to determine the wear rate of the specimen during the test and the payback time of the product. Finally, SEM images will be performed to identify the predominant wear mechanisms present after the tests.Acesso AbertoTribologiaCompósitosMancal de deslizamentoPTFERejeito de ScheelitamasterThesisCNPQ::ENGENHARIAS::ENGENHARIA MECANICA