Role of TiO2 and ZrO2 on crystallizing phases and microstructure in Li, Ba aluminosilicate glass

Low temperature sintering and properties of CaO–B2O3–SiO2 system glass ceramics for LTCC applications

“…According to documents, the additions of P 2 O 5 , ZnO, ZrO 2 , TiO 2 and some low-melting-point glasses have great effects on the properties of glass ceramics [15][16][17][18]. Little addition cannot improve the sintering properties of glass ceramics, whereas too much addition in the matrix would also damage the properties of the samples.…”

“…The oxide additions in initiating glasses can form a multitude of centers to promote crystallization of glasses during specific heat treatments [19]. Thus, the different oxide additions, such as TiO 2 and ZrO 2 , play an important role in the crystallizability, phase assemblages and various properties of glass ceramics [16]. Naga Raju et al [20] have reported that the dielectric properties of ZnO-ZnF 2 -B 2 O 3 glasses containing small concentrations of TiO 2 varied greatly.…”

Spectroscopic investigations on PbO–As2O3glasses crystallized with TiO2

“…Previously, this oxide was considered a nucleating agent for crystallization in silicate glasses. However, several recent studies, where titanium ions have been used as nucleating agents, have observed that it induced phase separation during the cooling of the melt in other glass systems such as P 2 O 5 or GeO 2 [6,7]. Furthermore, the addition of TiO 2 has an added advantage in that titanium is highly polarizable ion and serves as an efficient regulator of charge transfer in the glass matrix.…”

Synthesis of Ba_0.75Sr_0.25Al₂Si₂O₈ - ZrO₂ Ceramic Composites by Solid State Reaction of Mechanically Activated Precursor Mixtures

“…The conversion of Hexacelsian into Celsian tends to be difficult and sluggish, especially in the case of BAS, since this conversion is easier in SBAS due to its content of SrO. The stabilization of Celsian can also be achieved by doping the material with mineralizing agents such as Li 2 O, NaF, CaO, TiO 2 , MgO, SrF 2 , BeO and Cr 2 O 3 (3,4). The BAS and SBAS-based composite materials are employed in structural applications such as environmental barrier coatings (EBCs) for Si-based (SiC, Si 3 N 4 ) ceramic components in the hot section of advanced gas turbine engines (5).…”