摘要:
A method to prepare a thin ceramic or metallic solid-state composition comprising three phases: a material (A), a material (B), and pores, wherein the porous matrix of material (A) has a porosity gradient in the range of about 0% to about 80%, and wherein the pores are partially or completely filled with material (B). Various compositions and methods of use for the prepared composition are also disclosed.
摘要:
The invention concerns a method for preparing a thin ceramic material with controlled surface porosity gradient, including (A) infiltrating a porous pore-forming substrate of controlled thickness, with a ceramic material suspension; (B) evaporating the solvent; (C) a step which includes eliminating the pore-forming agents and the various organic additives, and (D) a sintering step. The invention also concerns the use of the ceramic material in the method for preparing a solid electrolyte and a mixed ionic-electronic conductor, in methods for preparing ultra-pure oxygen, for eliminating oxygen from a gaseous atmosphere, for producing heat energy, for preparing gas or liquid filtering membranes, for ceramic/metal joints, for biomaterials and sensors.
摘要:
A method to prepare a thin ceramic or metallic solid-state composition comprising three phases: a material (A), a material (B), and pores, wherein the porous matrix of material (A) has a porosity gradient in the range of about 0% to about 80%, and wherein the pores are partially or completely filled with material (B). Various compositions and methods of use for the prepared composition are also disclosed.
摘要:
A member of an element for feeding fluid and pasty products in cylinder or sleeve form, able to withstand high thermal transitions, comprises, arranged concentrically relative to each other, a part made of ceramic material (6, 16) intended to come into contact with the fluid and a support made of polymer material (14, 22) overmoulded on the part made of ceramic material (6, 16). The part made of ceramic material (6, 16) has, on its external lateral face, at least one relief (24) comprising at least one dextrogyral helical groove and at least one levogyral helical groove that extend over the surface of the ceramic part in contact with the support made of polymer material which both prevent any relative movement of this part (6, 16) and of the support (14, 22), and distribute the tensions that can be produced by high temperature differentials.