研究目的
Investigating the influence of the CuO–TiO2 phase (CT) on dielectric properties of the CCTO ceramic.
研究成果
CT/deficient ceramics exhibited higher ?′ values and lower tanδ values compared to CT/excessive ceramics. The deficiency of CuO and TiO2 phases, along with a high percentage of CCTO and CaTiO3 phases, resulted in ceramics with superior dielectric properties. Appropriate Cu and Ti contents benefit grain growth and microstructural homogeneity.
研究不足
The study focuses on the influence of CuO-TiO2 phase on dielectric properties, but other factors like sintering atmosphere and time could also affect the results. The accuracy of EDS for light elements like oxygen is limited.
1：Experimental Design and Method Selection:
CCXTYO powders were prepared using the coprecipitated method with variations in CuO-TiO2 composition.
2：Sample Selection and Data Sources:
Starting materials included [Cu(NO3)
3：3H2O], calcium carbonate [CaCO3], and titanium butoxide [Ti(OC4H9)4]. List of Experimental Equipment and Materials:
Netzsch STA-409 for thermal analyses, Panalytical X’Pert PRO diffractometer for XRD, Phenom ProX SEM for microstructural observations, Keysight E4990A for dielectric characterizations.
4：Experimental Procedures and Operational Workflow:
Powders were calcined, pressed into discs, sintered, and characterized for structural, microstructural, and dielectric properties.
5：Data Analysis Methods:
XRD for structural characterization, SEM for microstructural analysis, impedance spectroscopy for dielectric properties.
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