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Alkali‐Resistant Magnesium Aluminosilicate Oxynitride Glasses
Author(s) -
Steffestun Bärbel,
Frischat Günther H.
Publication year - 1993
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1993.tb03662.x
Subject(s) - aluminosilicate , nitrogen , magnesium , materials science , alkali metal , aqueous solution , oxide , durability , inorganic chemistry , mineralogy , chemical engineering , chemistry , metallurgy , composite material , catalysis , biochemistry , organic chemistry , engineering
Glasses containing up to 3.3 wt% nitrogen were prepared in the system MgO─Al 2 O 3 ─SiO 2 ─AIN─Si 3 N 4 . GlasGlass transition temperature, density, and elastic properties increased with increasing nitrogen content. Resistance against aqueous alkaline solutions was determined by weight loss measurements, solution and surface analysis. The good durability of both oxide and oxynitride glasses is caused by a protective surface layer. The introduction of nitrogen decreases the alkaline attack. The data suggest that nitrogen is incorporated as Si─N boxhs.