Effects of the Microstructure Induced by Sintering on the Dielectric Properties of Alumina

Zarbout, K.; Moya, G.; Abderrahmane, Si Ahmed; Damamme, G.; Kallel, A.

doi:10.5772/33719

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Sintering Behavior Densification and Mechanical Performance1

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“…doping cations and their charge compensation defects). In sintered materials, it is also necessary to consider the effect of grain contours, segregation of impurities and defects in the interfaces [20]. These dopant atoms may have contributed to the formation of punctual defects, thus increasing the concentration of native defects in the crystal, which may hinder the sintering kinetics, generating a high porosity for samples G1 and G5.…”

Section: Sintering Behavior Densification and Mechanical Performancementioning

confidence: 99%

Effect of the addition of glasses as sintering aids on microstructure and properties of nanoalumina

et al. 2020

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Alumina-Glass compositions were prepared to evaluate the effect of glass as sintering aids. The composites showed densification below 1100°C. The highest density values (~95%) were obtained for compositions based respectively on borosilicate (G2 and G3) and soda lime glasses (G4), all [A1] [A2] containing Na in the precursor powder. Samples G1 (K-based) and G5 (no K or Na in the precursor glass powder) presented irregular morphology with the presence of intergranular porosity. The composition G2, G3, and G4 presented uniform morphology corresponding to higher densification.

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Section: Sintering Behavior Densification and Mechanical Performancementioning

confidence: 99%