This is the most popular method for producing high-strength and complex geometry silicon nitride components. This method uses a silicon nitride powder that has been mixed with sintering aids to promote liquid phase sintering (typically yttria, magnesium oxide, and/or alumina) as well as binders to improve the mechanical strength of the green ceramic body. The powder is pressed into the desired form and green-machining can take place. The parts are then placed into a furnace that has a pressurized nitrogen atmosphere to aid with densification and prevent the evaporation/decomposition of the silicon, nitrogen, and additives.
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Precision Ceramics stocks a range of standard silicon nitride ceramic rods, which are all precision turned to an excellent surface finish. These rods can be used as bearings, pistons, engine components, or in a variety of other assemblies. In addition, Precision Ceramics offers full machining/grinding services for custom silicon nitride component manufacturing.
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