Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
METHOD FOR FORMING 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, andthen sintering the ceramic material precursor to form a porous ceramic material,wherein the step of heating the ceramic material precursor comprisesi) 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, orii) 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, oriii) heating the ceramic material precursor in a sealed oxygen-containing atmosphere whereby the solid deposits are partially removed from the ceramic material precursor, preferably wherein the sintering is conducted once there is no oxygen remaining in the sealed atmosphere, oriv) heating the ceramic material precursor in air at a temperature sufficient to cause at least partial decomposition of the polymer.
METHOD FOR FORMING 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, andthen sintering the ceramic material precursor to form a porous ceramic material,wherein the step of heating the ceramic material precursor comprisesi) 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, orii) 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, oriii) heating the ceramic material precursor in a sealed oxygen-containing atmosphere whereby the solid deposits are partially removed from the ceramic material precursor, preferably wherein the sintering is conducted once there is no oxygen remaining in the sealed atmosphere, oriv) heating the ceramic material precursor in air at a temperature sufficient to cause at least partial decomposition of the polymer.
METHOD FOR FORMING A POROUS CERAMIC MATERIAL
VERFAHREN ZUM BILDEN EINES PORÖSEN KERAMIKMATERIALS
PROCÉDÉ DE FORMATION D'UN MATÉRIAU CÉRAMIQUE POREUX
KINGSBURY BENJAMIN FRANCIS KNATCHBULL (Autor:in) / WU ZHENTAO (Autor:in) / LI KANG (Autor:in)
21.04.2021
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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