Oxynitride glasses prepared by densification of nitrided silica aerogels.

• Autorzy: Szaniawska K. , Murawski L. , Pastuszak R. , Walewski M.
• Języki publikacji: EN

Abstrakty

EN

Silica aerogels were nitrided by ammonia treatment at temperatures ranging from 700 degrees C to 1300 degrees C. It was found that the amount of nitrogen incorporated in silica aerogel depends on the final temperature of ammonolysis and on the time of heat treatment. The specific surface area of nitrided aerogels remains large and decreases with the temperature of ammonolysis and with nitrogen content. Nitrided aerogels can be converted into dense homogeneous oxynitride glasses containing 8.4-13.0 wt% of nitrogen by heat treatment at 1600 degrees C in vacuum or in nitrogen atmosphere. The spectra of the Fourier transform infrared spectroscopy (FTIR) reveal that Si-N bonds exist in nitrided aerogels as well as in oxynitride glasses.

Słowa kluczowe

EN

oxynitride glasses; densification; nitrided silica aerogels; silica aerogels; ammonia treatment; final temperature; ammonolysis; heat treatment

PL

szkło; aerożel; zagęszczanie; obróbka cieplna; obróbka amoniakalna; amonoliza

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2000
• Tom: Vol. 30, nr 4
• Strony: 529--536
• Opis fizyczny: Bibliogr. 9 poz., rys. 6, tab. 1

Twórcy

autor

Szaniawska K.

autor

Murawski L.

autor

Pastuszak R.

autor

Walewski M.

• Faculty of Applied Physics and Mathematics, Technical University of Gdansk, ul. Narutowicza 11/12, 80-952 Gdańsk, Poland.