Sintering Behavior and Microwave Dielectric Properties of BaTi4O9 Ceramics Prepared from Different Size Powders by Sol-Gel Method

Wen Juan Zhang; Ming Gang Li; Hong Wei Li; You Jie Hua; Huan Ping Wang; Shi Qing Xu

doi:10.4028/www.scientific.net/AMR.550-553.2953

Paper Titles

Effects of Different Processing Techniques on the Properties of PLA
p.2932

Study on the Mean Value of Particle Concentration Signal in Silicon Power Fluidized Bed
p.2936

GIS-Based Emergency Management System for Chemical Industry Park
p.2941

Purification of D-(-)-Lactic Acid from Fermentation Broth Using Nanofiltration, Esterification, Distillation, and Hydrolysis Technique
p.2945

Sintering Behavior and Microwave Dielectric Properties of BaTi₄O₉ Ceramics Prepared from Different Size Powders by Sol-Gel Method
p.2953

Study on Intrinsic Safety and Volume Expansion Ratio of Liquefied Gas Cylinder
p.2958

Investigation on Laminar Flow Field Performances in a Dual-Impeller Stirred Tank
p.2964

Fluidization Behavior of Mixtures of Nanoparticles in Vibrated Fluidized Beds
p.2968

Pore Size Distribution Effect on the Mass Transfer and Reaction in a Cylindrical Porous Gas Sensitive Medium
p.2972

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 550-553Sintering Behavior and Microwave Dielectric...

Sintering Behavior and Microwave Dielectric Properties of BaTi₄O₉ Ceramics Prepared from Different Size Powders by Sol-Gel Method

Abstract:

The BaTi₄O₉ submicron powders were synthesized by a sol-gel method, and the sintering behavior and microwave dielectric properties of BaTi₄O₉ ceramics prepared from powders with different particle sizes were also investigated. The particle size of powders calcined at 700 °C, 800 °C, 900 °C and 1000 °C were 8-10 nm, 70-90 nm, 100-120 nm and 140-170 nm, respectively. The 70-170 nm powders benefited the sintering process and microwave dielectric properties, whereas nanoparticles with the size of 8-10 nm damaged the sintering behavior due to the more amorphous phases and lower green density introduced by the large surface area. Sintered at 1175 °C, the BaTi₄O₉ ceramic prepared from 100-120 nm size nanoparticles had compact structure and exhibited good microwave dielectric properties of εr = 36.91 and Q×f = 29,833 GHz.