HIP glassmaking for high nitrogen compositions in the YSiON system

Mittl, J.C.; Tallman, R.L.; Kelsey, P.V.; Jolley, J.G.

doi:10.1016/0022-3093(85)90298-4

Cited by 12 publications

(1 citation statement)

References 8 publications

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“…However, some metals can reduce several oxides such as silica in the melts, leading to formation of metallic micro-particles including silicides. 12,68,69 Alternatively, oxynitride glasses were prepared with nitrogen overpressures up to 200 MPa successfully preventing nitrogen loss in the glass, 65,70 or by self-propagating high-temperature combustion synthesis. 57…”

Section: Meltingmentioning

confidence: 99%

Review: Elaboration, structure, and mechanical properties of oxynitride glasses

2022

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Oxynitride glasses are glasses where threefold coordinated nitrogen atoms substitute for twofold oxygen ones, hence resulting in a larger interatomic crosslinking degree. Such glasses were first observed at the grain boundary in silicon nitride ceramics, where they govern the high-temperature behavior. Later, they were prepared as bulk materials and motivated numerous researches, thanks to their large viscosity, glass transition range, elastic moduli, hardness, and fracture toughness among inorganic and non-metallic glasses. In different chemical systems that were investigated, the synthesis routes and the sources for these exceptional mechanical properties are reviewed. Oxynitride glasses are not easy to process and suffer from the loss of transparency as nitrogen is incorporated over some critical content. Nevertheless, they are attractive "specialty" glasses in various niche areas, thanks to their large refractive index and dielectric constant, improved chemical durability, high softening point, etc., and majorly to their exceptional mechanical properties.

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