Difference between revisions of "Pressing green bodies"
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== Powder properties for good pressing == | == Powder properties for good pressing == | ||
| − | Pressing green bodies does not work equally well for all ceramic powders. | + | Pressing green bodies does not work equally well for all ceramic powders. Very coarse powders tend not to give a mechanically stable green body, and very fine powders are difficult to handle due to their low tapping density. Powders with a particle size of 0.5-3µm are generally easiest to press into green bodies. |
| − | + | It might be required to add a binder to assure a good mechanical stability of the green body. In this case, remember to remove the binder before sintering by a thermal treatment at 600-800°C in oxidizing atmosphere. | |
== Quantity of powder == | == Quantity of powder == | ||
Revision as of 16:05, 1 July 2021
Pressing green bodies is an essential step of ceramic processing.
Contents
Powder properties for good pressing
Pressing green bodies does not work equally well for all ceramic powders. Very coarse powders tend not to give a mechanically stable green body, and very fine powders are difficult to handle due to their low tapping density. Powders with a particle size of 0.5-3µm are generally easiest to press into green bodies. It might be required to add a binder to assure a good mechanical stability of the green body. In this case, remember to remove the binder before sintering by a thermal treatment at 600-800°C in oxidizing atmosphere.
