Acessibilidade / Reportar erro
Artigos • Matéria (Rio J.) 24 (3) • 2019 • https://doi.org/10.1590/S1517-707620190003.0741   copy

Characterization of CuCr2O4 composite obtained by solution combustion synthesis

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

CuCr2O4 material was subjected to solution combustion synthesis and heat-treated in the range of 600 to 1100oC in order to analyze its phase evolution. The structure and morphology of the composite were characterized by X-ray diffraction (XRD), Rietveld refinement, field emission gun scanning electron microscopy (FEG-SEM) and Fourier transform infrared spectroscopy (FTIR), while its sintering behavior was analyzed by dilatometry. The XRD patterns revealed the formation of pure phase copper chromite in the range of 700-1000°C, which was confirmed by Rietveld refinement. This pure phase copper chromite exhibited a regular polyhedral shaped morphology. The dilatometric analysis indicated that the composite underwent thermal expansion followed by shrinkage, which were attributed to structural changes in the material.

Keywords
Copper chromite; method of solution combustion synthesis

Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro, em cooperação com a Associação Brasileira do Hidrogênio, ABH2 Av. Moniz Aragão, 207, 21941-594, Rio de Janeiro, RJ, Brasil, Tel: +55 (21) 3938-8791 - Rio de Janeiro - RJ - Brazil
E-mail: revmateria@gmail.com
Acompanhe os números deste periódico no seu leitor de RSS