Abstract
The present study is focused on the characterization of ZrO2 and Al2O3 nanoparticles synthetized by thermal gelation of a solution of nitrates for self-combustion to increase the mechanical properties of glass containers. The nanoparticles were characterized by high-resolution transmission electron microscope and X-ray diffraction, and their chemical compositions were measured employing an Atomic absorption spectrometer and Inductively Coupled Plasma (ICP) techniques. The results showed the formation of nanoparticles of around 14nm with a face centered cubic (FCC) structure for the zirconia and orthorhombic structure for the Al2O3 with gamma phase, the TEM images showed the interplanar spacing corresponding to the (111) planes of c_ZrO2 and the family planes {420}, {622} are attributed to the alumina structure. The addition of the NPs increased the fracture toughness of glass up to 24% for ZrO2 and 16% for Al2O3 respectively, which reveals that the nanoparticles are dissolved in the glassy matrix which prevents the formation of stress concentrators that decrease the toughness of the glass.
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