Effect of microwave and conventional sintering on densification, microstructure and dielectric properties of BZT–xCr2O3 ceramics
Source abstract
Abstract
Abstract Barium zinc tantalate (BZT) ceramics with high density and uniform microstructure is a potential material for application as microwave window sections in fusion reactor. In the present investigation the effect of Cr 2 O 3 addition on the densification, microstructure development and microwave dielectric properties of BZT has been studied. 97% of the theoretical density has been achieved for BZT–2 mol% Cr 2 O 3 in microwave sintering only at 1400 °C. Irregular grains with diffused grain boundaries have been observed for the samples sintered at 1400 °C. Anisotropic grain growth has been observed with increase in sintering temperature. A maximum Quality factor (Qxf) of 98,000 GHz is obtained for samples containing 0.5 mol% Cr 2 O 3 after annealing. 1:2 ordering of the B-site ions is more predominant for pure BZT compared to samples containing Cr 2 O 3 , as analyzed from Raman spectroscopic data, which is in accordance with the order parameter calculated from the XRD data.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Microwave Dielectric Ceramics Synthesis · Ferroelectric and Piezoelectric Materials · Multiferroics and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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