New synthesis route for Si2N2O ceramics based on desert sand

Characterization of porous silicon nitride/silicon oxynitride composite ceramics produced by sol infiltration

“…Fig. 5 shows the dielectric constant ε of the as-prepared Table 4), so, it is consistent with the empirical relation that dielectric constant increased with density according to Here, ε denotes the relative permittivity of the mixture, and the volume fraction is represented as v SN 4 and SiO 2 on composite dielectric constant can be ignored, so, density increase is believed to be a major factor which influences the dielectric constant.…”

“…In particular, silicon oxynitride ceramic with excellent oxidation resistance at severe conditions has gained much interest also [3]. Consequently, Si 3 N 4 /Si 2 N 2 O ceramics with a modified microstructure have been found to combine desirable properties such as the oxidation resistance of Si 2 N 2 O and the strength of Si 3 N 4 [4].…”

A modified SHS method for Si2N2O elaboration

“…4,7,8 Self-propagating high-temperature synthesis (SHS) seems to be an alternative route. 9 In this process, the strong exothermic reaction propagates spontaneously through the reactant mixture, converting it into product. Therefore, this process leads to a rapid product formation and energy efficiency.…”

Investigation of the effect of ZrO2 and ZrO2/Al2O3 additions on the hot-pressing and properties of equimolecular mixtures of α- and β-Si3N4

“…This means that asilicon nitride is completely transformed into b-silicon nitride. Formation of Si 2 N 2 O indicates two reaction possibilities [62][63][64][65][66][67][68][69][70][71][72]. First, capturing the oxygen from zirconia and reaction with silicon nitride.…”