Crystallization characteristics of some lithia calcia magnesia borosilicate glasses

Effect of the addition of B2O3 and BaO–B2O3–SiO2 glasses on the microstructure and dielectric properties of giant dielectric constant material CaCu3Ti4O12

“…This would facilitate the grain growth and help in the elimination of inter-grain pores [16,17]. In addition, since some of the glasses have high electrical resistance and low D [18,19], these could assist in the lowering of D and in improving the overall dielectric properties of the polycrystalline ceramics. However, this greatly depends on the kind of chemical reaction between the glassy phase that is added and the rest of the dielectric, densification and the microstructure.…”

Thermal Stability and Crystallization Kinetics of MgO–Al2O3–B2O3–SiO2 Glasses

“…The crystallization behaviors of LDk‐II and LDk‐III are unknown. In the literature, crystallization studies have also been reported for high‐alkaline earth (MgO, CaO, BaO: 33–45 wt%)–Al 2 O 3 –low B 2 O 3 (3–5 wt%)–SiO 2 , 10 low Al 2 O 3 (2 wt%) alkali‐borosilicate, 11 high B 2 O 3 (25 mol%), and low Al 2 O 3 (1 mol%) or high Li 2 O (21–33 mol%) borosilicates 12–14 . To the best of our knowledge, no literature information is available covering the thermal and crystallization behaviors of the LDk‐I glass type, primarily defined by the MgO–Al 2 O 3 –B 2 O 3 –SiO 2 system with some modifying oxides to aid glass melting 4…”

“…Thermal and crystallization characteristics of E-glass compositions (CaO-Al 2 O 3 -SiO 2 ) with or without B 2 O 3 have been well documented in the literature. 5 [12][13][14] To the best of our knowledge, no literature information is available covering the thermal and crystallization behaviors of the LDk-I glass type, primarily defined by the MgO-Al 2 O 3 -B 2 O 3 -SiO 2 system with some modifying oxides to aid glass melting. 4 In order to gather sufficient scientific experimental data to support future commercial fiber manufacturing operations (PPG Industries Inc., Pittsburgh, PA), we selected a representative composition from the candidate lower dielectric composition space 4 with two levels of iron concentrations to perform an in-depth thermal and crystallization investigation.…”

Microwave Dielectric Properties and Low‐Temperature Sintering of Cerium Oxide for LTCC Applications

“…This is due to the fact that in the latter, alkali ions, which are weakly held in the glassy network, absorb energy and eventually give rise to dielectric loss. On the other hand, borosilicate glasses 19,20 have continuous atomic structures, with SiO 4 and BO 3 configurations joined to form (–Si–O–B–O–) linkages, with high electrical resistance and low dielectric loss. The microwave dielectric properties of a few borosilicate glasses (BaO–B 2 O 3 –SiO 2 , PbO–B 2 O 3 –SiO 2 , and ZnO–B 2 O 3 –SiO 2 ) have been reported 18 recently in which it was observed that the τ f of all these glasses are negative.…”