Ceramic compositions
AssigneeImerys Ceramics France
InventorsWen ZHANG, Gilles GASGNIER, Paul MICALETTI, Grégory ETCHEGOYEN, Bénédicte CHASTAGNIER
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Abstract
A dried or at least partially dried ceramic feedstock, a method of preparing a dried or at least partially dried ceramic feedstock having a residual solvent content of up to about 15 wt. %, ceramic formulations comprising one or more ceramic precursors, temperature sensitive gelling agent, solvent, and having a viscosity suitable for low pressure injection molding, methods for preparing said ceramic formulations, a method of forming a ceramic article from said ceramic formulations, and a ceramic article obtainable therefrom.
Claims29
A ceramic formulation comprising one or more ceramic precursors, a temperature sensitive gelling agent, and a solvent, wherein the ceramic formulation has a solids concentration of at least 50 vol. % and a viscosity of not more than 10 Pa·s at a shear rate of 100 s−1 at a temperature greater than the gel point of the gelling agent.
A ceramic feedstock comprising one or more ceramic precursors and a temperature sensitive gelling agent, wherein the ceramic feedstock is dried or at least partially dried and has a solvent content of up to about 15 wt. %, based on the total weight of the ceramic feedstock.
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A method of forming a ceramic article, said method comprising:
- forming a green gelled ceramic body from a ceramic formulation comprising one or more ceramic precursors, a temperature sensitive gelling agent, and a solvent and having a solids concentration of at least 50 vol. %,
- and
- firing the green gelled ceramic body to form a sintered ceramic article.
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Dependencies are inferred from the claim text.