Abstract: A dried or at least partially dried ceramic feedstock, a method of preparing a dried or at least partially dried ceramic feedstock having a residual solvent content of up to about 15 wt. %, ceramic formulations comprising one or more ceramic precursors, temperature sensitive gelling agent, solvent, and having a viscosity suitable for low pressure injection molding, methods for preparing said ceramic formulations, a method of forming a ceramic article from said ceramic formulations, and a ceramic article obtainable therefrom.

Abstract: A dried or at least partially dried ceramic feedstock, a method of preparing a dried or at least partially dried ceramic feedstock having a residual solvent content of up to about 15 wt. %, ceramic formulations comprising one or more ceramic precursors, temperature sensitive gelling agent, solvent, and having a viscosity suitable for low pressure injection molding, methods for preparing said ceramic formulations, a method of forming a ceramic article from said ceramic formulations, and a ceramic article obtainable therefrom.

Abstract: The invention relates to a method for forming a deposit of a fragile material on a substrate (3) by spraying a powder (1) of said material, said method including the following steps: producing an aerosol containing said powder (1) in a so-called aerosol chamber (10); accelerating the aerosol through a nozzle (31) in a so-called deposition chamber (30) having a negative pressure relative to the aerosol chamber (10); and spraying the aerosol onto the substrate (3), wherein the grains constituting the powder (1) fragment and form said deposit upon impact with the substrate (3), said method being characterized in that the formation of the deposit is controlled on the basis of a three-dimensional digital model of said deposit. The invention also relates to a device for implementing said method.

Abstract: The invention relates to a method for forming a deposit of a fragile material on a substrate (3) by spraying a powder (1) of said material, said method including the following steps: producing an aerosol containing said powder (1) in a so-called aerosol chamber (10); accelerating the aerosol through a nozzle (31) in a so-called deposition chamber (30) having a negative pressure relative to the aerosol chamber (10); and spraying the aerosol onto the substrate (3), wherein the grains constituting the powder (1) fragment and form said deposit upon impact with the substrate (3), said method being characterized in that the formation of the deposit is controlled on the basis of a three-dimensional digital model of said deposit. The invention also relates to a device for implementing said method.

Abstract: A method of preparing a composite includes the following steps. A powder blend is sintering while an oxygen partial pressure (pO2) of a gaseous atmosphere surrounding the powder blend is controlled. Before the sintering, a shape is formed from the powder blend. After the forming and before the sintering, binder is removed from the powder blend. The powder blend comprises binder, a mixed electronic/oxygen O2? anionic conducting compound (C1) and a compound (C2) chosen from MgO and BaTiO3. The resultant composite comprises at least 75 vol % of compound (C1), from 0.01 to 25 vol % of compound (C2), and from 0 vol % to 2.5 vol % of compound (C3).

Abstract: A method for the fluid-tight assembly of two parts silicon nitride respectively comprising a male end and a female end, each of these ends being provided with mechanical assembly means capable of cooperating together and which, under assembling conditions, delimit a space -between them, said method comprises the assembling of the said parts by cooperation of the mechanical assembly means of the male and female ends, and filling of the space existing between these assembly means with a glass joint, and is characterized in that this filling comprises: coating, before assembling of the parts, the mechanical means of one and/or the other of the male and female ends with a borosilicate glass paste; and applying heat treatment to the parts after the assembling thereof.

Abstract: A composite material (M) comprising: at least 75% by volume of a mixed electronic conductor compound oxygen anions O<2->(C1) selected from doped ceramic compounds which, at the temperature of use, are present in the form of a crystalline network having ion oxide lattice vacancies and, more particularly, in the form of a cubic phase, a fluorite phase, a perovskite phase, of the aurivillius variety, a Brown-Millerite phase or a pyrochlore phase; and 0.01%-25% by volume of a compound (C2) which is different from compound (C1), selected from oxide-type ceramic materials, non-oxide type ceramic materials, metals, metal alloys or mixtures of said different types of material; and 0%-2.5% by volume of a compound (C3) produced from at least one chemical reaction represented by the equation: xFC1+yFC2----->zFC3, wherein FC1, FC2 and FC3 represent the raw formulae of compounds (C1), (C2) and (C3) and x, y and z represent rational numbers above or equal to 0.

Abstract: A composite material (M) comprising: at least 75% by volume of a mixed electronic conductor compound oxygen anions O<2->(C1) selected from doped ceramic compounds which, at the temperature of use, are present in the form of a crystalline network having ion oxide lattice vacancies and, more particularly, in the form of a cubic phase, a fluorite phase, a perovskite phase, of the aurivillius variety, a Brown-Millerite phase or a pyrochlore phase; and 0.01%-25% by volume of a compound (C2) which is different from compound (C1), selected from oxide-type ceramic materials, non-oxide type ceramic materials, metals, metal alloys or mixtures of said different types of material; and 0%-2.5% by volume of a compound (C3) produced from at least one chemical reaction represented by the equation: xFC1+yFC2 - - - >zFC3, wherein FC1, FC2 and FC3 represent the raw formulae of compounds (C1), (C2) and (C3) and x, y and z represent rational numbers above or equal to 0.

Abstract: A composite material (M) comprising: at least 75% by volume of a mixed electronic conductor compound oxygen anions O<2->(C1) selected from doped ceramic compounds which, at the temperature of use, are present in the form of a crystalline network having ion oxide lattice vacancies and, more particularly, in the form of a cubic phase, a fluorite phase, a perovskite phase, of the aurivillius variety, a Brown-Millerite phase or a pyrochlore phase; and 0.01%-25% by volume of a compound (C2) which is different from compound (C1), selected from oxide-type ceramic materials, non-oxide type ceramic materials, metals, metal alloys or mixtures of said different types of material; and 0%-2.5% by volume of a compound (C3) produced from at least one chemical reaction represented by the equation: xFC1+yFC2 - - - >zFC3, wherein FC1, FC2 and FC3 represent the raw formulae of compounds (C1), (C2) and (C3) and x, y and z represent rational numbers above or equal to 0.

Abstract: The invention concerns a mixed electronic and O2? anion conductive perovskite material, of formula (I): A(a)(1-x-u)A?(a?1)xA?(a?)uB(b)(1-s-y-v)B(b+1)sB?(b+?)yB?(b?)vO3-d, wherein: a, a?1, a?, b, b+1, b+? et b? are integers representing respective valences of the atoms A, A?, A?, B, B?, B?; a, a?, b, b?, ?, x, y, s, u, v et ? such that the electrical neutrality of the crystal lattice is preserved; A represents an atom selected among scandium, yttrium or in the families of lanthanides, actinides or alkaline-earth metals; A? represents an atom selected among Al, Ga, In, or Tl; B, B?, B? represents an atom selected among the transition metals, Al, In, Ga, Ge, Sb, Bi, Sn or Pb. The invention also concerns the method for preparing said material and its use as mixed conductive material of a catalytic membrane reactor, for use in synthesizing synthetic gas by oxidation of methane or natural gas.

Abstract: Assembly, characterized in that it comprises either a dense layer (CDI), consisting of a material comprising at least 75% by volume and at most 100% by volume of a compound of formula (I): M?1-x-uM??xM??uM??yM??vO3-w, a porous layer (CP1), adjacent to the said dense layer (CD1), consisting of a material comprising at least 75% by volume and at most 100% by volume of a compound of formula (II): M?1-x-uM?40 xM??uM?1-y-vM??yM??vO3-w and a catalytic layer (CC1), adjacent to the said dense layer (CD1) and consisting of a material comprising at least 75% by volume and at most 100% by volume of a compound of formula (III): M?1-x-uM??xM??uM?1-y-vM??vO3-w; or a dense layer (CD1), a porous layer (CP1), a catalytic layer (CC1), of thickness EC1, as defined above; and a second porous layer (CP2), inserted between the said catalytic layer (CC1) and the said dense layer (CD1), consisting of a material comprising at least 75% by volume and at most 100% by volume of a compound of formula (IV): M?1-x-uM??xM??uM?1-y-vM??yM??