Properties and Structure of PONH Glasses
Phosphorus oxynitride glasses containing up to 17 wt% N and up to 2.5 wt% H were prepared by decomposing NH4H2PO4 in ammonia at 720°C for various times. In general, glasses with greater N-contents have higher dilatometric softening temperatures, lower thermal expansion coefficients and better aqueous durabilities. X-ray photoelectron spectroscopic analyses reveal that N is chemically incorporated in both PNP and PNHx bonds. The hydrogen species, including -OH groups, depolymerize the glass structure, counteracting the effects of the cross-linking phosphorus-nitride bonds on the glass properties. © 1990.
R. K. Brow et al., "Properties and Structure of PONH Glasses," Journal of Non-Crystalline Solids, Elsevier, Jan 1990.
The definitive version is available at https://doi.org/10.1016/0022-3093(90)90824-6
Materials Science and Engineering
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