Production and Characterization of Cu/CNT Nanocomposites

• Tipo: Artigo em Revista Científica Internacional
• Data: 2023

Autores

Carneiro, I (Autor) Outra; Monteiro, B (Autor) Outra; Ribeiro, B (Autor) Outra; Fernandes, JV (Autor) Outra; Simoes, S (Autor) FEUP

Revista

Título: Applied Sciences

Vol. 13

Página Final: 3378

Editora: MDPI

Indexação

ISI Web of Knowledge - 2 Citações

Scopus - 2 Citações

Outras Informações

ID Authenticus: P-00Y-1CC

DOI: 10.3390/app13063378

Abstract (EN): In this research, copper nanocomposites reinforced with carbon nanotubes (CNTs) were produced by ultrasonication and conventional sintering, followed by cold rolling. These nanocomposites may be good candidates due to their excellent properties for components in the electrical, electronics, or aerospace industries with highly demanding requirements. The main objectives of this work were to produce and characterize the Cu/CNT nanocomposites, identify the strengthening mechanisms, and study the deformation behavior of the nanocomposites during cold rolling. The nanocomposites exhibited an improvement in hardness and tensile strength of 17 and 67%, respectively, attesting to the strengthening effect of the reinforced material. The yield strength of the nanocomposites was determined considering different mechanisms: (1) load transfer, (2) grain refinement or texture, (3) dislocation, and (4) Orowan strengthening mechanisms. The microstructural and calculated results show that the mechanism that contributes the most to the increase in the properties of the nanocomposite is the load transfer. The nanocomposites show a different texture evolution of the Cu matrix during cold rolling. This can be due to differences in the active slip planes between the matrix and the nanocomposite, which affects the lattice rotation.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 17