58results about How to "Improve resistance to reduction" patented technology

The present invention provides a method for producing a dielectric ceramic composition, wherein the dielectric ceramic composition contains the following components in a specific ratio: a main component containing a dielectric oxide having a specific composition, the main component can provide a Method for producing reduction-resistant dielectric ceramic composition with frequency dielectric characteristics and accelerated life of insulation resistance further improved, containing V oxide as the first subcomponent, Al oxide as the second subcomponent, and Mn oxide The 3rd subcomponent, and the 4th subcomponent containing a specific sintering aid; the method includes the following steps: removing at least one or two other subcomponents of the raw material of the 3rd subcomponent and the raw material of the 4th subcomponent A step of preparing a pre-reaction raw material by mixing at least a part of the component raw material with the starting raw material prepared to obtain the main component raw material; a step of reacting the prepared pre-reaction raw material to obtain a post-reaction raw material; and in the obtained post-reaction raw material , the process of mixing the auxiliary component raw materials removed when preparing the raw materials before the reaction to obtain the dielectric ceramic composition raw materials.

The invention relates to base metal copper electrode slurry and a preparation method of a capacitor prepared by using the same. The base metal copper electrode slurry comprises the following components (wt%): 30-65 wt% of spherical copper, 10-30 wt% of sheet copper, 1.52-10 wt% of glass powder, 2-15 wt% of inorganic non-metallic additive, and 10.5-24 wt% of organic carrier, wherein the glass powder is a ZnO-B2O3-SiO2-Bi2O3 glass system; the inorganic non-metallic additive is one or more selected from CuO, Cu2O, ZnO and B2O3; and the organic carrier is polymer resin and a solvent. The base metal copper electrode slurry can be used in a ceramic disc capacitor and a semiconductor disc ceramic capacitor chip, the sintering temperature is 600-800 DEG C, and after sintering, the copper electrode slurry is converted to a copper electrode. The base metal copper electrode slurry has the characteristics of low cost, uniform material, uniform particle size distribution, high dispersibility, good forming process, and environmental friendliness.

The invention discloses a high-strength low-water ratio ethylbenzene dehydrogenation catalyst not containing adhesive. The high-strength low-water ratio ethylbenzene dehydrogenation catalyst comprises the following components in percentage by weight: 60 to 85% of Fe2O3 (a), 3 to 25% of K2O (b), 0.1 to 5% of MoO3 (c), 3 to 20% of CeO2 (d), 0.1 to 5% of CaO (e), 0.1 to 5% of Na2O (f), 0.1 to 5% of MnO2 (g), and 0.1 to 100ppm of elementary substance or oxide of at least one of Pb, Pt, Ag, Au and Sn, wherein the weight ratio of Na2O to MnO2 is 0.1 to 10; the catalyst is not added with adhesive in the preparation process.