Li-Si-Al-O-N and Li-Si-O-N oxynitride glasses study and characterization

Glass-forming region in the Ca–Si–O–N system using CaH2 as Ca source

“…14 The highly resistive Y-Si-Al-O-N glasses might be of interest as insulators at temperatures where ordinary glasses are too highly conductive. 15 Oxynitride glass formation occurs in a number of M-Si-O-N and M-Si-Al-O-N systems, where M is a modifying cation such as one of the alkali metals (Li, Na, K), [16][17][18][19] the alkaline earths (Mg, Ca, Ba) 17,[19][20][21][22] or Y and the rare earth lanthanides. 16,20,[23][24][25][26][27] It has been found that addition of nitrogen in the form of Si 3 N 4 promotes glass formation and that the glassforming regions are relatively small.…”

La–Si–O–N glasses

“…The importance of an oxynitride liquid phase during sintering and densification of Si 3 N 4 based ceramics is well known. This has led to studies on the preparation and property characterization of bulk oxynitride glasses in the systems M-Si-(Al)-O-N (M = Na, [1][2][3][4][5] Li, 3,6,14 Sc,7,15 Ba, 3,8 Mn, 3,9,10 Y, 11,16,17,18 La, 12,17,18 Mg, 8,[13][14][15][16] Ca, 5,9,10,14 Nd, 9,17,18,20,22 Ce, 18,20,21 Sm, 17,20,22 Gd, 17,19,22 Eu, 20 Dy, 17,18,20,22 Ho, <...>…”

Mechanical strength improvement of a soda-lime–silica glass by thermal treatment under flowing gas

“…Results are compared with those of identical treatments made under air or in nitrogen (N 2 ). This process was already successfully used to synthesize pure aluminium nitride (AlN) from alumina (Al 2 O 3 ) powders near 1300 C. 8 In addition, some heat-treatments were conducted under ammonia on both borosilicate and silica glasses to study the influence of the composition on the chemical solubility of nitrogen.…”