High quality microwave dielectric ceramic sintered at extreme-low temperature below 200° and co-firing with base metal. Issue 9 (August 2017)

• Record Type: Journal Article
• Authors: Pang, Li-Xia; Zhou, Di; Li, Wen-Bo; Yue, Zhen-Xing
• Is Part Of: Journal of the European Ceramic Society. Volume 37:Issue 9(2017)
• Page Start: 3073
• Page End: 3077
• Publication Date: 2017-08
• Subjects: Dielectric materials/properties -- Sintering -- Oxides; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2017.03.034
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: Ultra-low temperature co-fired ceramics technology (ULTCC) requires the microwave dielectric ceramics with lower intrinsic sintering temperature than the melting point of inner electrodes. In the present work, a novel HBO2 ceramic was found to be densified at extreme-low temperature below 200 °C, with pores, residual H3 BO3, amorphous B2 O3 inside, with a relative permittivity ∼2.12 ± 0.02, a Qf value ∼32, 700 ± 300 GHz and a temperature coefficient of resonant frequency value ∼ − 43 ± 3 ppm/°C. This material can be easily obtained by dehydration from H3 BO3 by sintering at low temperature below 200 °C. Its extreme-low sintering temperature and water solubility also provides the possibility to achieve some novel multi-functional inorganic-organic composite in the future.