A new precipitation based method for preparation of metasilicate phosphors

A comparative study on nitridation mechanism and microstructural development of porous reaction bonded silicon nitride in the presence of CaO, MgO and Al2O3

“…Phase transformation of β→α and formation of α-CaSiO 3 has been previously observed at T > 1100°C [52,53]. Likewise, in the current study, when the heating temperature reached 1350°C, β-CaSiO 3 disappeared and α-CaSiO 3 formed.…”

“…interconnected channels with open spherical pores were fabricated. The results of X-ray diffraction and phase compositions in Figure 8 and Table 4 SiO 2 and leads to the formation of CaSiO 3 [52,53]. Thermodynamic data extracted from the "Reaction" module in FactSage 6.4 package software also illustrated very high negative ∆G° for formation of CaSiO 3 via Eq.…”

UV‐excited blue‐ to green‐emitting Tb3+‐activated sodium calcium metasilicate colour tunable phosphor for luminescence devices

“…However, silicates are the most abundant option in nature and are categorized as ortho (1:4), meta (1:3) and pyro (2:7) depending upon the Si:O ratio. [ 20 ] Amongst various metasilicates, Na 4 Ca 4 Si 6 O 18 occurs as a ternary compound in the Na 2 O–CaO–SiO 2 system. Ohsato and colleagues determined that the Na 4 Ca 4 Si 6 O 18 structure consisted of tightly packed six membered [Si 6 O 18 ] 12− rings of silicate tetrahedral that are stacked in a cuboid close‐packed arrangement with alkali and alkaline earth ions.…”

“…[17][18][19] However, silicates are the most abundant option in nature and are categorized as ortho (1:4), meta (1:3) and pyro (2:7) depending upon the Si:O ratio. [20] Amongst various metasilicates, Na 4 Ca 4 Si 6 O 18 occurs as a ternary compound in the Na 2 O-CaO-SiO 2 system.…”