Ceramic material
AssigneeImperial Innovations Limited
InventorsBenjamin Francis Knatchbull Kingsbury, Zhentao Wu, Kang Li
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Abstract
The present invention relates to method for forming a porous ceramic material, the method comprising the steps of: providing a suspension of polymer-coated ceramic particles in a first solvent; contacting the suspension with a second solvent, whereby a ceramic material precursor is formed from the polymer and ceramic particles, heating the ceramic material precursor to at least partially decompose the polymer within the precursor into solid deposits, and then sintering the ceramic material precursor to form a porous ceramic material.
Claims20
A method for forming a porous ceramic material, the method comprising the steps of:
- providing a suspension of polymer-coated ceramic particles in a first solvent;
- contacting the suspension with a second solvent, whereby a ceramic material precursor is formed from the polymer and ceramic particles,
- heating the ceramic material precursor in the presence of oxygen to at least partially decompose the polymer within the precursor into solid deposits,
- then sintering the ceramic material precursor under an inert atmosphere to form a porous ceramic material;
- and
- then heating the porous ceramic material under an oxygen-containing atmosphere to remove the solid deposits.
A method for forming a porous ceramic material, the method comprising the steps of:
- providing a suspension of polymer-coated ceramic particles in a first solvent;
- contacting the suspension with a second solvent, whereby a ceramic material precursor is formed from the polymer and ceramic particles,
- heating the ceramic material precursor to at least partially decompose the polymer within the precursor into solid deposits by heating the ceramic material precursor under an inert atmosphere to decompose the polymer into the solid deposits comprising carbon deposits and then heating under an oxygen-containing atmosphere to partially remove the carbon deposits from the ceramic material precursor;
- and
- then sintering the ceramic material precursor to form a porous ceramic material.
A method for forming a porous ceramic material, the method comprising the steps of:
- providing a suspension of polymer-coated ceramic particles in a first solvent;
- contacting the suspension with a second solvent, whereby a ceramic material precursor is formed from the polymer and ceramic particles,
- heating the ceramic material precursor to at least partially decompose the polymer within the precursor into solid deposits by heating the ceramic material precursor under an oxygen-containing atmosphere to partially decompose the polymer into the solid deposits and then under an inert atmosphere to fully decompose the solid deposits into carbon deposits, and then heating under an oxygen containing atmosphere to partially remove the carbon deposits from the ceramic material precursor;
- and
- then sintering the ceramic material precursor to form a porous ceramic material.
A method for forming a porous ceramic material, the method comprising the steps of:
- providing a suspension of polymer-coated ceramic particles in a first solvent;
- contacting the suspension with a second solvent, whereby a ceramic material precursor is formed from the polymer and ceramic particles,
- heating the ceramic material precursor in a sealed oxygen-containing atmosphere to at least partially decompose the polymer within the precursor into solid deposits and to partially remove the solid deposits from the ceramic material precursor;
- and
- then sintering the ceramic material precursor to form a porous ceramic material once there is no oxygen remaining in the sealed atmosphere.
Dependencies are inferred from the claim text.