| abstract |
METHOD FOR PREPARING A POWDER SUITABLE FOR SINTERING, IN PARTICULAR A CERAMIC POWDER. THIS PROCESS IS OF THE TYPE COMPRISING THE STEPS OF FORMING AN EMULSION, THEN OF FRACTIONATING THIS EMULSION IN THE FORM OF MICRODOUTLETS WHICH ARE FREEZED AND THEN DRIED AND THERMALLY TREATED; ACCORDING TO THE INVENTION, THE EMULSION IS FORMED FROM AT LEAST ONE POWDER IN SUSPENSION IN A SOLUTION OF AT LEAST ONE PRECURSOR SALT, THAT IS TO SAY WHOSE CATION(S) ARE CONSTITUENT ELEMENTS OF THE POWDER TO BE PRODUCED . APPLICATION TO THE REPLACEMENT OF METALLIC PARTS BY CERAMIC PARTS IN THERMAL ENGINES. |