Patent classifications
C04B2235/763
MnZn ferrite material with wide temperature range and low consumption, and preparation method thereof
The MnZn ferrite material includes principal components and auxiliary components, where the principal components include: 52.5 mol % to 53.8 mol % of Fe.sub.2O.sub.3, 8.8 mol % to 12 mol % of ZnO, and the balance of MnO; the auxiliary components include: 0.35 wt % to 0.5 wt % of Co.sub.2O.sub.3, 0.03 wt % to 0.08 wt % of CaSiO.sub.3, 0.01 wt % to 0.04 wt % of Nb.sub.2O.sub.5, and 0.05 wt % to 0.12 wt % of TiO.sub.2 and RE elemental components; the RE elemental components include one or more from the group consisting of 0 wt % to 0.04 wt % of Gd.sub.2O.sub.3, 0 wt % to 0.02 wt % of Ho.sub.2O.sub.3, and 0 wt % to 0.03 wt % of Ce.sub.2O.sub.3; the auxiliary components are all represented by a mass percentage relative to a total mass of the Fe.sub.2O.sub.3, the MnO, and the ZnO.
SINTERED BODY
A sintered body that includes: a spinel ferrite oxide having a main constituent of metal elements of Fe, Ni, Cu, and Zn; and Zr, Mn, Al, Co, and Cr. Wherein, when Zn, Ni, Cu, Zr, Mn, Al, Co, and Cr have a contained mole part: a, b, c, d, e, f, g, and h, respectively, and based on Fe being 100 mole parts: 49.0<100?a?b?c+2d+(1/2)e<50.0, 50.2<a+b+c+d+e/2<52.7, 0.0012?f?0.010, 0.0005?g?0.0015, and 0.0005?h?0.004.
Transparent Composite Material
The invention relates to a transparent composite material for various applications, having crystalline and amorphous inorganic materials with improved material properties.
ZIRCONIA SINTERED BODY AND MANUFACTURING METHOD OF THE SAME
A zirconia sintered body contains aluminum, cobalt, and manganese and a remaining portion consisting of yttria-containing zirconia. In an oxide exchange, aluminum content is 5.0 wt % or more and 30.0 wt % or less, cobalt content is 0.1 wt % or more and 2.0 wt % or less, and manganese content is 0.5 wt % or more and 7.0 wt % or less.
COMPOSITE SINTERED BODY, SEMICONDUCTOR MANUFACTURING APPARATUS MEMBER, AND METHOD OF MANUFACTURING COMPOSITE SINTERED BODY
The composite sintered body includes AlN and MgAl.sub.2O.sub.4. The open porosity of the composite sintered body is lower than 0.1%. The relative density of the composite sintered body is not lower than 99.5%. The total percentage of the AlN and the MgAl.sub.2O.sub.4 contained in the composite sintered body is not lower than 95 weight percentage and not higher than 100 weight percentage. The percentage of the MgAl.sub.2O.sub.4 contained in the composite sintered body is not lower than 15 weight percentage and not higher than 70 weight percentage. It is thereby possible to provide a high-density composite sintered body having high plasma corrosion resistance, high volume resistivity, and high thermal conductivity.
MAGNETIC COMPOSITE AND ELECTRONIC COMPONENT USING THE SAME
A magnetic composite contains a ferrite composition, zinc silicate, and borosilicate glass. The ferrite composition is composed of a spinel ferrite and bismuth oxide present in the spinel ferrite, and the percentage by weight of bismuth oxide to the whole magnetic composite is from about 0.024% by weight to about 0.23% by weight. The percentage by weight of zinc silicate based on the total weight of zinc silicate and the spinel ferrite is from about 8% by weight to about 76% by weight. The percentage by weight of borosilicate glass based on the total weight of zinc silicate and the spinel ferrite is from about 0.3% by weight to about 3% by weight.
Method for synthesizing ceramic composite powder and ceramic composite powder
The embodiments of the present invention disclose a method for synthesizing ceramic composite powder and ceramic composite powder, pertaining to the technical field of inorganic non-metallic materials. Among them, the method includes preparing an aqueous slurry of ceramic raw materials, the aqueous slurry including ceramic raw material, water and low polymerization degree organometallic copolymer, the ceramic raw material including at least two components; adding a crosslinking coagulant into the aqueous slurry to obtain a gel; dehydrating and drying the gel to obtain the dried gel; heating the dried gel to the synthesizing temperature of the ceramic composite powder and conducting the heat preservation to obtain ceramic composite powder or ceramic composite base powder; conducting secondary doping on ceramic composite base powder to obtain the ceramic composite powder. The multi-component ceramic composite powder prepared by the embodiments of the present invention has uniformly dispersed each component and low synthesizing temperature.
SPINEL REFRACTORY GRANULATES WHICH ARE SUITABLE FOR ELASTICIZING HEAVY-CLAY REFRACTORY PRODUCTS, METHOD FOR THEIR PRODUCTION AND USE THEREOF
The disclosure relates to a granular, refractory mineral elasticizing granulate for refractory products, in particular for basic refractory products. The minerals consist of mono-phased sintered spinel mixed crystal of the ternary system MgOFe.sub.2O.sub.3Al.sub.2O.sub.3 of the composition range MgO: 12 to 19.5, in particular 15 to 17 wt.-%, Remainder: Fe.sub.2O.sub.3 and Al.sub.2O.sub.3 in a quantity ratio range of Fe.sub.2O.sub.3 to Al.sub.2O.sub.3 between 80 to 20 and 40 to 60 wt.-%.
Starting from an MgO content between 12 and 19.5 wt.-%, the respective mixed crystals have an Fe.sub.2O.sub.3 and Al.sub.2O.sub.3 content in a solid solution out of the limited ranges respectively indicated thereof, such that a total composition of 100% is obtained. In addition, the invention relates to a method for production of the elasticizing granulate and to the use thereof.
THIN FILM CERAMICS AND CERMETS PROCESSED USING NANOPOWDERS OF CONTROLLED COMPOSITIONS
A method of making a thin film is provided. The method includes ball milling a suspension including a nanopowder, an additive component, and a solvent to generate a suspension of milled nanopowder, disposing a layer of the suspension of milled nanopowder onto a substrate, drying the layer by removing at least a portion of the solvent to form a green film, compressing the green film to form a compressed green film, debindering the compressed green film to form a debindered film, and sintering the debindered film to generate the thin film. The additive component includes a component selected from the group consisting of a dispersant, a binder, a plasticizer, and combinations thereof.
Cathode material and fuel cell
A cathode material used in an anode and a cathode contains (Co,Fe).sub.3O.sub.4 and a perovskite type oxide that is expressed by the general formula ABO.sub.3 and includes at least one of La and Sr at the A site. A content ratio of (Co,Fe).sub.3O.sub.4 in the cathode material is at least 0.23 wt % and no more than 8.6 wt %.