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US 6,617,270 B1Granted
Porous ceramic matrices
AssigneeDytech Corporation Limited
InventorsWayne Austin, Rodney Martin Sambrook, Yan Yin
Life of this patent
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Abstract
A dispersion is made up of water refractory particles and material for forming pores and a polymeric dispersion. A water sensitive destabilising agent is added to increase the viscosity of the mix and cause it to solidify to form a green body which is removed from a mould and then heated and sintered.
Claims19
A method of making a porous ceramic matrix, the method comprising the steps of:
- i) forming a dispersion comprising water, refractory particles, at least one pore-forming organic material and a polymeric dispersant;
- ii) adding a water-sensitive cyclic ester to the dispersion;
- iii) placing the dispersion in a mold;
- iv) allowing or causing the water-sensitive cyclic ester to be hydrolysed to cause an increase in the viscosity of the mix thereby to solidify and form a green body;
- v) removing the green body from the mold;
- and
- vi) heating the green body to remove water and burn away the organic materials.
4 more elements
Dependencies are inferred from the claim text.