Microwave Sintering Modification of 85M7Z3CLT Microwave Dielectric Ceramics
Year: 2025
Type: article
Abstract: The 0.85(Mg0.7Zn0.3)TiO3-0.15(Ca0.61La0.26)TiO3(referred to as 85M7Z3CLT) ceramics were fabricated by microwave sintering(MWS) and conventional sintering(CS) techniques. The effects of MWS and CS on the sintering property, crystal phase structure and dielectric properties of 85M7Z3CLT were discussed. Compared with CS, MWS had a short sintering period and a high volume density. The results indicated that the phase composition of 85M7Z3CLT ceramics were not changed after MWS, with (Mg0.7Zn0.3)TiO3 and (Ca0.61La0.26)TiO3 structure as the main crystal phase were also obtained by MWS. However, the grain growth was significantly inhibited due to the rapid sintering speed of MWS, which resulted in a fine, uniform microstructure. Furthermore, microwave-sintered ceramics had excellent dielectric properties due to the miscellaneous phase (Mg0.7Zn0.3)Ti2O5 being suppressed. As a result, excellent dielectric properties of 27.11 for εr, 103,500GHz for Q·f and +2ppm/°C for τf were obtained by microwave sintering at 1275°C for 20 min. Therefore, the ceramic quality factor was increased by 22% compared with the conventional sintering.Key words: microwave technique; (Mg,Zn)TiO3; dielectric ceramics
Source: Materials science forum
DOI: 10.4028/p-om3lbf
Authors: Li Zhao, Guang Yu Li, Jia Feng Liu, Xun Fei Cai, Qi Hu, Yu Ye Hu, Ya Long Jiang
Institution: Anhui Xinhua University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4408844599