Abstract: An electrochemical device for purifying a fluid, for example wastewater or sludge, includes an electrochemical filtering membrane, including a metallic support, for example chosen from a screen, a fabric or an open-pore foam, the support being permeable to the fluid, a coating layer of the support including a titanium oxide of general formula TiOx, with x between 1.5 and 1.9.

Abstract: A monolithic porous body can comprise magneli phase titanium oxide and a developed interfacial area ratio Sdr of at least 60%. The monolithic body can further comprise a total porosity of at least 25% based on the total volume of the body. The monolithic porous body can have a high efficiency for the degradation of water pollutants if used as anode material in an electrolytic cell.

Abstract: Method for manufacturing porous products consisting essentially of titanium suboxide(s) of general formula TiOx, the value of x being between 1.6 and 1.9, the method including a) mixing the raw materials including at least one source of titanium dioxide, a reducing agent comprising carbon, b) forming the product, c) optionally, in particular when organic products are used during step a), thermal treatment under air or an oxidizing atmosphere, d) sintering, for example at a temperature above 1150° C. but not exceeding 1430° C., under a neutral or reducing atmosphere, in which the source of titanium dioxide consists of at least 55 wt % of anatase.

Abstract: A fused grain is essentially composed of a matrix of a magnesium aluminum oxide of MgAl2O4 spinel structure and/or of the MgO—MgAl2O4 eutectic structure, and of inclusions essentially composed of magnesium oxide. The grain has the following overall chemical composition, as percentages by weight, expressed in the form of oxides: more than 5.0% and less than 19.9% of Al2O3, Al2O3 and MgO together represent more than 95.0% of the weight of the grain. The cumulative content of CaO and of ZrO2 is less than 4000 ppm, by weight.

Abstract: Fused grains, in which the grains include a matrix of the zirconia-spinel eutectic coating inclusions composed essentially of a zirconia phase or of a spinel phase, the grains exhibit the following overall chemical composition, as percentages by weight expressed in the form of oxides: more than 45.0% and less than 95.0% of ZrO2, more than 3.0% and less than 40.0% of Al2O3, more than 1.0% and less than 20.0% of MgO, wherein ZrO2, Al2O3 and MgO together represent at least 95.0% of the weight of the grains.

Abstract: Method for manufacturing porous products consisting essentially of titanium suboxide(s) of general formula TiOx, the value of x being between 1.6 and 1.9, the method including a) mixing the raw materials including at least one source of titanium dioxide, a reducing agent comprising carbon, b) forming the product, c) optionally, in particular when organic products are used during step a), thermal treatment under air or an oxidizing atmosphere, d) sintering, for example at a temperature above 1150° C. but not exceeding 1430° C., under a neutral or reducing atmosphere, in which the source of titanium dioxide consists of at least 55 wt % of anatase.

Abstract: Polymer-ceramic composites, in particular for the field of electronics, include grains of titanium suboxides of general formulation TiOx in which x is between 1.00 and 1.99, limits included, and/or of barium and/or strontium titanate suboxides of general formulation Ba(1-m)SrmTiOy in which y is between 1.50 and 2.99, limits included, and m is between 0 and 1, limits included.

Abstract: A fused grain is essentially composed of a matrix of a magnesium aluminum oxide of MgAl2O4 spinel structure and/or of the MgO—MgAl2O4 eutectic structure, and of inclusions essentially composed of magnesium oxide. The grain has the following overall chemical composition, as percentages by weight, expressed in the form of oxides: more than 5.0% and less than 19.9% of Al2O3, Al2O3 and MgO together represent more than 95.0% of the weight of the grain. The cumulative content of CaO and of ZrO2 is less than 4000 ppm, by weight.

Abstract: Polymer-ceramic composites, in particular for the field of electronics, include grains of titanium suboxides of general formulation TiOx in which x is between 1.00 and 1.99, limits included, and/or of barium and/or strontium titanate suboxides of general formulation Ba(1-m)SrmTiOy in which y is between 1.50 and 2.99, limits included, and m is between 0 and 1, limits included.

Abstract: Fused grains, in which the grains include a matrix of the zirconia-spinel eutectic coating inclusions composed essentially of a zirconia phase or of a spinel phase, the grains exhibit the following overall chemical composition, as percentages by weight expressed in the form of oxides: more than 45.0% and less than 95.0% of ZrO2, more than 3.0% and less than 40.0% of Al2O3, more than 1.0% and less than 20.0% of MgO, wherein ZrO2, Al2O3 and MgO together represent at least 95.0% of the weight of the grains.

Abstract: Polymer-ceramic composites, in particular for the field of electronics, include grains of titanium suboxides of general formulation TiOx in which x is between 1.00 and 1.99, limits included, and/or of barium and/or strontium titanate suboxides of general formulation Ba(1-m)SrmTiOy in which y is between 1.50 and 2.99, limits included, and m is between 0 and 1, limits included.

Abstract: A fused grain is essentially composed of a matrix of a magnesium aluminum oxide of spinel structure MgAl2O4 and/or of the MgO—MgAl2O4 eutectic, the matrix including inclusions essentially composed of magnesium oxide, the grain exhibiting the following overall chemical composition, as percentages by weight, expressed in the form of oxides: more than 20.0% and less than 50.0% of Al2O3, Al2O3 and MgO together represent more than 95.0% of the weight of the grain, wherein the cumulative content of CaO and ZrO2 is less than 4000 ppm by weight.

Abstract: Polymer-ceramic composites, in particular for the field of electronics, include grains of titanium suboxides of general formulation TiOx in which x is between 1.00 and 1.99, limits included, and/or of barium and/or strontium titanate suboxides of general formulation Ba(1-m)SrmTiOy in which y is between 1.50 and 2.99, limits included, and m is between 0 and 1, limits included.

Abstract: Molten grains include titanium suboxides of the formulation TinO2n-1, in which the phases are principally Ti5O9 or Ti6O11 or a mixture of these two phases, the phases Ti5O9 and/or Ti6O11 representing, in total, more than 60% of the weight of the grains, the grains further including less than 30% by weight of Ti4O7.

Abstract: A fused grain is essentially composed of a matrix of a magnesium aluminum oxide of spinel structure MgAl2O4 and/or of the MgO—MgAl2O4 eutectic, the matrix including inclusions essentially composed of magnesium oxide, the grain exhibiting the following overall chemical composition, as percentages by weight, expressed in the form of oxides: more than 20.0% and less than 50.0% of Al2O3, Al2O3 and MgO together represent more than 95.0% of the weight of the grain, wherein the cumulative content of CaO and ZrO2 is less than 4000 ppm by weight.

Abstract: Molten grains include titanium suboxides of the formulation TinO2n-1, in which the phases are principally Ti5O9 or Ti6O11 or a mixture of these two phases, the phases Ti5O9 and/or Ti6O11 representing, in total, more than 60% of the weight of the grains, the grains further including less than 30% by weight of Ti4O7.

Abstract: Fused grain having the following chemical composition: more than 10% and less than 50% of alumina Al2O3; more than 10% and less than 50% of titanium oxide TiO2; more than 21% and less than 50% of zirconia; more than 1% and less than 10% of a compound chosen from the group constituted by MgO, CaO, Fe2O3, Cr2O3, MnO2, La2O3, Y2O3, Ga2O3 and mixtures thereof; less than 20% of silica SiO2; less than 10% of a compound chosen from the group constituted by alkali metal oxides, alkaline-earth metal oxides and mixtures thereof; less than 2% of other oxide species; the percentages being percentages by weight on the basis of the oxides. Application in the melting of metals.

Abstract: Fused grain having the following chemical composition: more than 10% and less than 50% of alumina Al2O3; more than 10% and less than 50% of titanium oxide TiO2; more than 21% and less than 50% of zirconia; more than 1% and less than 10% of a compound chosen from the group constituted by MgO, CaO, Fe2O3, Cr2O3, MnO2, La2O3, Y2O3, Ga2O3 and mixtures thereof; less than 20% of silica SiO2; less than 10% of a compound chosen from the group constituted by alkali metal oxides, alkaline-earth metal oxides and mixtures thereof; less than 2% of other oxide species; the percentages being percentages by weight on the basis of the oxides. Application in the melting of metals.

Abstract: The invention relates to a mixture of fused grains having the following chemical composition, in weight percentages on the basis of the oxides: less than 55% of Al2O3; more than 35% and less than 80% of TiO2; more than 1% and less than 20% of MgO; more than 0.7% and less than 20% of ZrO2; and less than 20% of SiO2, said fused grains also corresponding to the following composition, in molar percentages, on the basis of the single oxides Al2O3, TiO2, MgO, ZrO2: 90<2a+3m<110, 100+a<3t<210?a with a+t+m+zr=100, in which: a is the molar percentage of Al2O3; t is the molar percentage of TiO2; m is the molar percentage of MgO; and zr is the molar percentage of ZrO2. The invention also relates to a ceramic product obtained from such fused grains.

Abstract: Fused particles having the following chemical composition, as a percentage by weight on the basis of the oxides: more than 15% but less than 55% of Al2O3; more than 25% but less than 60% of TiO2; less than 20%, in total, of at least one oxide of an element M1, chosen from MgO and CoO; more than 0.7% but less than 20%, in total, of at least one oxide of an element M2, chosen from the group formed by Fe2O3, Cr2O3, MnO2, La2O3, Y2O3 and Ga2O3; less than 20%, in total, of at least one oxide of an element M3, chosen from the group formed by ZrO2, Ce2O3 and HfO2; and less than 30% of SiO2. Ceramic product or material obtained by sintering said particles.