Sintering behavior, infrared spectra and microwave dielectric characteristics analysis for Ce2Zr3(MoO4)9 ceramics achieved by reaction-sintering method

2021 ◽  
Vol 875 ◽  
pp. 160096
Author(s):  
Yishan Jiang ◽  
Juna Chen ◽  
Lintao Liu ◽  
Ying Xu ◽  
Jialun Du ◽  
...  
Keyword(s):  
Infrared Spectra ◽  
Sintering Behavior ◽  
Reaction Sintering ◽  
Dielectric Characteristics ◽  
Microwave Dielectric ◽  
Characteristics Analysis ◽  
Sintering Method

Sintering Behavior and Microwave Dielectric Properties of Li2O-B2O3-SiO2 Doped 0.67CaTiO3-0.33LaAlO3 Ceramics

2017 ◽  
Vol 726 ◽  
pp. 220-224
Author(s):  
Gan Wang ◽  
Juan Jiang ◽  
Zhan Ming Dou ◽  
Fan Fan Ning ◽  
Er Tian Zhang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Dielectric Properties ◽  
Quality Factor ◽  
Amorphous State ◽  
Microwave Dielectric Properties ◽  
Sintering Behavior ◽  
Low Temperature Sintering ◽  
Microwave Dielectric ◽  
Structure Surface ◽  
Sintering Method

A low temperature sintering method was used to avoid the relatively high sintering temperatures typically required to prepare 0.67CaTiO3-0.33LaAlO3 (CTLA) ceramics. 0.67CaTiO3-0.33LaAlO3 ceramics doped with Li2O-B2O3-SiO2 (LBS) were prepared by a conventional two-step solid-state reaction process. The sintering behavior, crystal structure, surface morphology, and microwave dielectric proprieties of the prepared ceramics were studied. As the small amount of LBS content increased, the small amount of liquid phase formed in an amorphous state around the surface of the grain boundaries. With the increase the content of LBS glass, the quality factor (Q×f) value decreased. CTLA+0.05 wt.% LBS ceramics sintered at 1320°C for 4h exhibited the optimal microwave dielectric properties of dielectric permittivity (εr) = 45.02, quality factor (Q×f) = 37400 GHz, and temperature coefficient of resonant frequency (τf) = 9.84 ppm/°C. .

Reaction-sintering method for microwave dielectric Li2CoTi3O8 ceramic

2016 ◽  
Vol 505 (1) ◽  
pp. 4-9 ◽  
Author(s):  
Pei Cui-Jin ◽  
Hu Xu-Sheng ◽  
Yao Guo-Guang ◽  
Yang He-qing
Keyword(s):  
Reaction Sintering ◽  
Microwave Dielectric ◽  
Sintering Method

Li2ZnTi3O8 Microwave Dielectric Ceramics Prepared by the Reaction-Sintering Process

2015 ◽  
Vol 655 ◽  
pp. 164-167 ◽  
Author(s):  
Xu Sheng Hu ◽  
Guo Guang Yao ◽  
Xiu Lao Tian
Keyword(s):  
Dielectric Properties ◽  
Microwave Dielectric Properties ◽  
Reaction Sintering ◽  
Sintering Process ◽  
X Ray Diffraction ◽  
X Ray ◽  
Microwave Dielectric ◽  
Pure Phase ◽  
Dielectric Ceramics ◽  
Sintering Method

Li2ZnTi3O8ceramics were prepared by reaction-sintering process (calcination free). The crystal phase and microstructure were investigated using X-ray diffraction (XRD) and scanning electron microscopy (SEM). A pure phase of Li2ZnTi3O8ceramics sintered at 1075 °C-1150 °C with cubic spinel structure was confirmed by XRD. The microwave dielectric properties (εr,Qxf) of Li2ZnTi3O8ceramics were strongly dependent on the densification and grain size. The τfof Li2ZnTi3O8ceramics was almost independent with the sintering temperatures. In particular, Li2ZnTi3O8ceramics by reaction-sintering method sintered at 1125 °C for 5 h exhibited good combination microwave dielectric properties of εr=21.7, Q×f=70 500 GHz (at 7.5 GHz) and τf=-13 ppm/°C.

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