Jeong, Byoung-Jik Joung, Mi-Ri Kweon, Sang-Hyo Kim, Jin-Seong Nahm, Sahn Choi, Ji-Won Hwang, Seong-Ju 2024-01-20T12:03:28Z 2024-01-20T12:03:28Z 2021-08-31 2013-07 0002-7820 https://pubs.kist.re.kr/handle/201004/127944 The Microstructure and microwave dielectric properties of Bi2O3-deficient Bi12SiO20 ceramics were investigated. A small amount of unreacted Bi2O3 phase melted during sintering at 825 degrees C and assisted with densification and grain growth in all samples. The melted Bi2O3 reacted with remnant SiO2 during cooling to form a Bi4Si3O12 secondary phase. The nominal composition of Bi11.8SiO19.7 ceramics sintered at 825 degrees C for 4h had a high relative density of 97% of the theoretical density, and good microwave dielectric properties: epsilon(r)=39, Qxf=74000GHz, and (f) = -14.1ppm/degrees C. Moreover, this ceramic did not react with Ag at 825 degrees C. English WILEY ABNORMAL GRAIN-GROWTH GLASSES Microstructures and Microwave Dielectric Properties of Bi2O3-Deficient Bi12SiO20 Ceramics Article 10.1111/jace.12323 1 JOURNAL OF THE AMERICAN CERAMIC SOCIETY, v.96, no.7, pp.2225 - 2229 JOURNAL OF THE AMERICAN CERAMIC SOCIETY 96 7 2225 2229 scie scopus 000327187800038 2-s2.0-84880262462 Materials Science, Ceramics Materials Science Article ABNORMAL GRAIN-GROWTH GLASSES Dielectric Ceramics LTCC