Aluminium sialons

Silicon nitride, oxynitride and silicon aluminium oxynitride (SiAlON) compounds are of considerable technical interest as advanced ceramics because of their stability and chemical inertness at elevated temperatures, and their excellent mechanical properties. Si MAS NMR has proved to be useful in studying various aspects of these compounds, including their formation and structure, the processes by which they are... 

An Y NMR study has also been made of the effect of Y2O3 on the sintering of the silicon aluminium oxynitride 3-sialon, a compound structurally related to (3-Si3N4 but... 

SiAlONs are solid solutions based on the silicon nitride structure [18]. P- SiAlON (P ) is formed when oxygen replaces nitrogen in the P-Si5Ng structure while, at the same time, silicon is replaced by aluminium to maintain charge neutrality [19]. The phase composition is ... 

Self-bonded SiC, sintered SiC, aluminium nitride (AIN), SiAlON-bonded SiC, titanium boride—SiC compositiOTi, oxide materials were considered to be promising for application as a side lining of the reduction cell. 

John D, Maurage R. Sialon bonded silicon carbide sidewall pieces for the aluminium reduction cell. Ceram Ind Int. 1992 182 42. 

SiAION (silicon aluminium oxynitride) ceramics for engineering applications can be synthesised from aluminosilicates by carbothermal reduction and nitridation (CRN), in which a mixture of the aluminosilicate with carbon is fired in nitrogen at 1400 C. Composites of potassium aluminosilicate geopolymers with graphite, when fired for lOhr under these conditions, have been found to produce predominantly p-SiAlON (Figure 10) by a reaction such as ... 

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