International Syalons details sialon powder range
An
International Syalons (Newcastle) product story
Edited by the Engineeringtalk editorial team
Feb 3, 2009
International Syalons manufactures a range of sialon powders, including the 21R Polytype, Beta-Sialon and Alpha-Sialon.
21R Polytype is a silicon aluminium oxynitride structural modification of aluminium nitride (AlN), having the formulation (SiAl6O2N6).
It is a refractory material that is predominantly used in sialon formulations.
Its principal advantage over AlN is that it is stable in aqueous environments, unlike AlN, which hydrolyses very rapidly in water.
This allows sialon formulations containing 21R Polytype to be processed by aqueous slip-casting or spray-drying, for example.
Beta-Sialon is a pressureless sinterable powder that, under the right conditions, can be sintered into a fully dense beta-sialon body, with physical properties equivalent to those of Syalon 101.
It is available in a spray-dried, ready-to-press form, containing binders, or a slip-castable form, without binders.
Alpha-Sialon is a pressureless sinterable powder that, under the right conditions, can be sintered into a fully dense alpha-sialon body, with physical properties equivalent to those of Syalon 050.
It is available in a spray-dried, ready-to-press form, containing binders, or a slip-castable form, without binders.
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