Abstract: The present invention relates to a container packing structure, characterized in that it comprises a crystalline phase containing 55 to 97% by weight of xonotlite crystallites and 3 to 45% by weight of tobermorite crystallites. It also relates to a method for fabricating such a packing structure, and the container containing same, and its use for storing fluids such as gases.

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 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.

Abstract: 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.

Abstract: A rubber composition usable for the manufacture of tires, based on at least one diene elastomer, a reinforcing inorganic filler and a coupling agent providing the bond between the inorganic filler and the elastomer, wherein said inorganic filler comprises a silicon carbide having the following characteristics: (a) a BET specific surface area of between 20 and 200 m2/g; (b) an average particle size (by mass), dW, of between 10 and 350 nm. Tires or semi-finished products for tires such as treads comprising said rubber composition.

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: The invention relates to a method of producing a ceramic article. According to the invention, a slip is pressure cast in a mould (12) in order to form a deposit (20) and a solution (10) containing a deflocculating agent is filtered onto said deposit (20).

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??

Abstract: Preparation of a supported tubular ceramic membrane composed of two coaxial layers along a axis (x), a first layer with a non-zero thickness es of a support material (S) and a second layer with a non-zero thickness eM of an active material (M), characterised in that it comprises the following steps in sequence: a step (a) to shape said supported membrane by simultaneous coaxial co-extrusion of a paste PS of the support material (S) at a flow velocity along the axis (x) VS and a paste PM of active material (M) with a flow velocity along the axis (x) VM, where VS=VM; a step (b) to dry the co-extrudate formed in step (a); a step (c) to debind the co-extrudate dried in step (b), and a step (d) to apply a heat treatment to co-sinter the two coaxial layers of the product obtained in step (c); Device for implementation of step (a).

Abstract: A method of producing a ceramic component includes dispersing an alpha-alumina nanopowder whose diameter is above 100 nm in water, using 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTC) or 4,5-Dihydroxy-m-benzenedisulfonic Acid, Disodium Salt (Tiron™) as dispersant. The pH is shifted towards the isoelectric point (IEP) by adding a mixture of acetic anhydride and ethylene glycol or polyethylene glycol, drying in a controlled atmosphere (humidity, temperature) and post compacting using cold isostatic pressing and sintering the three-dimensional structure thus formed.

Abstract: The invention relates to a method of preparing a thin solid composition consisting of a ceramic or metallic material A having, inside said composition, a surface concentration gradient, and a ceramic or metallic material B having a chemical composition that is identical to, or different from, that of material A. The inventive method consists in:—infiltrating a porous pore-forming substrate with a suspension of material A;—evaporating the solvent;—a debinding step;—a sintering step; a step involving the total or partial filling of the pore space created at the surface of material A by material B;—and a step consisting in sintering or cosintering the unit obtained. The invention also relates to the ceramic material, the solid electrolyte membrane and the electrochemical mixed ionic-electronic conductor cell comprising said electrolyte.

Abstract: The invention concerns a method for preparing a thin ceramic material with controlled surface porosity gradient, characterised in that it consists in (A) infiltrating a porous pore-forming substrate of controlled thickness, with a ceramic material suspension; (B) evaporating the solvent; (C) a step which consists in 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.

Abstract: A rubber composition usable for the manufacture of tires, based on at least one diene elastomer, a reinforcing inorganic filler and a coupling agent providing the bond between the inorganic filler and the elastomer, wherein said inorganic filler comprises a silicon carbide having the following characteristics:

Abstract: The invention concerns a method for making thin films in metal/ceramic composite, characterised in that it consists in a) preparing a suspension (S) in an organic solvent from a substantially homogeneous mixture of ceramic reinforcements of metal particles, a binder, a plasticizing agent and an organic dispersant, the metal particles constituting at least 5 wt. % of the suspension; b) tape casting the suspension (S) to form a thing film (B), then climinating organic compounds contained in the binder and the plasticizing agent from said thin film; c) densifying the thin film from which said organic compounds have been removed in an oven.

Abstract: This electrical resistance heating element (10) for an electric furnace comprises a resistive heating part (12) made of a ceramic. The ceramic comprises a sintered mixture of silicon carbide particles, of dopant particles, suitable for obtaining an electrically conductive phase after sintering, and of mineral particles.