Notícias
por: Poliana Souza, Marcelo Câmara, Natália Fernanda Santos Pereira, Monique Cotrim
Ano: 2019
Instituições de ensino: Universidade Federal de Minas Gerais, Universidade Federal de Minas Gerais, Universidade Federal de Minas Gerais, Universidade Federal de Minas Gerais
Idioma: Portugues
Resumo
Surface energy (? )in solids is a property that affects straight the wettability and adhesions behavior in materials. However, it is frequently negligence on tribological studies because of the difficulty in its characterization and, by didnt have an understand about its correlation with tribological wear. Thus, the objective of this study was assessing the properties of hardness by nanoindentation, adhesion to substrate by Rockwell indentation method and surface energy was assessed by Owens-Wendt-Rabel-Kaelble (OWRK) method. These properties were associated to tribological contact of AlCrN and TiAlN coatings, coated on steel AISI M2, sliding against steel AISI 4340. Coefficient of friction behavior on TiAlN/AISI M2 X AISI 4340 showed larger wear losses, even though there are no significant differences on hardness and adhesion of coatings in work. In the comparison between the surface energy values of the coatings, the dispersive component of TiAlN showed higher intensity. The analysis of the polar and dispersive components of the surface energy showed influence on the interpretation of the mechanisms of wear. The work contributes to the understanding of surface phenomena in wear and tear.
Palavras chave
Comentários
Veja outros trabalhos acadêmicos
Outros conteúdos
Fórum
Tire suas dúvidas e ajude outras pessoas no CIMM:
Usuários que poderão acessar os artigos finais: Membros ABCM e frequentadores do Cobef 2019. Os frequentadores do COBEF deverão logar no site da ABCM com as mesmas credenciais do sistema de submissão de arquivos.
Faça seu login
Ainda não é cadastrado?
Cadastre-se como Pessoa física ou Empresa