80 results about "Strontium oxide" patented technology

The invention relates to the technical field of ceramics, in particular to a preparation method of a heat-resistant ceramic marmite. The heat-resistant ceramic marmite is composed of a green body and a glaze surface, and the green body is prepared from, by weight, 30-35 parts of fused quartz, 8-10 parts of petalite, 9-11 parts of kaolin, 19-21 parts of washed illite clay, 5-7 parts of sepiolite, 5-6 parts of andalusite, 7-9 parts of coal gangue, 0.2-0.7 part of zinc spinel and 2-3 parts of talc; the glaze surface is prepared from the following raw materials in parts by weight: 18 to 20 parts of fused quartz, 14 to 16 parts of petalite, 12 to 14 parts of kaolin, 5 to 6 parts of calcium oxide, 1.5 to 2 parts of zinc oxide, 1 to 1.5 parts of strontium oxide, 8 to 10 parts of spodumene, 0.6 to 0.8 part of lanthanum oxide, 8 to 10 parts of ZrSiO4 coated Al2O3 and 1.2 to 1.8 parts of pigment. The prepared ceramic marmite has the advantages of matt appearance, higher thermal stability, low water absorption rate and excellent comprehensive performance, and is not easy to crack and wear.

The invention provides a high-temperature-resistant magnesia-carbon composite refractory brick and a preparation method thereof, and belongs to the technical field of magnesium oxide refractory wall bricks, the refractory brick comprises the following raw materials: double-layer modified magnesium oxide, modified crystalline flake graphite, zircon powder, modified liquid phenolic resin and a benzoxazine cross-linking agent; the double-layer modified magnesium oxide is obtained by firstly coating magnesium oxide with powder phenolic resin, aluminum oxide and zirconium oxide and then coating magnesium oxide with asphalt, micron magnesium oxide, zirconium oxide and calcium oxide; the modified crystalline flake graphite is obtained by coating crystalline flake graphite with strontium hydroxide, asphalt and boron carbide; the modified liquid phenolic resin is formed by mixing liquid phenolic resin with a silane coupling agent and a polyacrylate cross-linked polymer. Double-layer modified magnesium oxide, modified crystalline flake graphite and modified liquid phenolic resin are prepared by adopting special components and a method and are matched with zircon powder and a benzoxazine cross-linking agent for use, and a reasonable forming and sintering process is designed, so that the refractory brick has good high-temperature stability, oxidation resistance, thermal shock resistance and the like.

Provided is an anti-counterfeiting composition for anti-counterfeiting fibers, including a carrier, an anti-counterfeiting tracer and a dispersant, wherein the anti-counterfeiting tracer is composed of barium oxide, strontium oxide, aluminum oxide and zinc oxide, and a barium element content, a strontium element content, an aluminum element content, and a zinc element content in the anti-counterfeiting composition is controlled to a fixed feeding mass ratio; in percent by mass, the sum of the barium element content, strontium element content, aluminum element content, and zinc content accounts for 5-50% of the anti-counterfeiting composition; the carrier is a matrix polymer or a bio-derived oil. The anti-counterfeiting composition of the present disclosure can give the anti-counterfeiting fiber advantages of memory tracking properties and identification functions, high anti-counterfeiting capability, and good anti-counterfeiting concealment.

The present invention developed a composite having a novel structure containing, in a high content, a powder having a radiation-shielding function.　Provided is a composite having a radiation-shielding function and a method for producing the same. The composite comprises a preform made from a mixture containing a liquid silica-based binder and one or more radiation-shielding powders selected from gadolinium oxide, boron carbide, boron oxide, boron, barium sulfate, strontium oxide, tungsten, tungsten oxide, tungsten carbide, molybdenum, molybdenum oxide, iron powder, iron oxide powder, and ferrite powder, the radiation-shielding powder(s) being contained in the range from 3% to 85% in total. All of the voids in the preform are impregnated and filled with molten aluminum and solidification is allowed to occur to form a composite, or 25% or more of the voids in the preform are impregnated with a liquid organic / inorganic sealing agent and solidification is allowed to occur to form a composite. The liquid silica-based binder has properties that allow the preform to be formed at a temperature at which the radiation-shielding powder(s) does not decompose.

The application discloses a multilayer chip ceramic capacitor and a preparation method thereof, and relates to the technical field of ceramic capacitors. The multilayer chip ceramic capacitor comprises a silicon substrate layer, a dielectric ceramic layer, an internal electrode layer and an end electrode. The end electrode is arranged above the silicon substrate layer, and the internal electrode layer is arranged below the end electrode. The dielectric ceramic layer is arranged between the internal electrode layers. The dielectric ceramic layer is made of a nano-level barium titanate plate, and the barium titanate plate is doped with lanthanum oxide, strontium oxide and calcium oxide. The internal electrode layer is made of nickel particles and coated with rare earth oxides to reduce oxidation. The end electrode comprises a first corrosion-resistant layer, a second corrosion-resistant layer and a third corrosion-resistant layer. The third corrosion-resistant layer is fixedly connected to the top end of the silicon substrate layer. The second corrosion-resistant layer is arranged at the top end of the first corrosion-resistant layer. The third corrosion-resistant layer is arranged at the top end of the second corrosion-resistant layer. The end electrode can prevent metal migration during long-term use, and the contact effect is improved.

This application discloses a method for producing acetonitrile by amination of acetate, comprising the following steps: in a reactor, acetate, ammonia, and a catalyst are contacted and reacted to obtain acetonitrile; wherein the acetate is selected from at least one of methyl acetate, ethyl acetate, propyl acetate, butyl acetate, and cyclohexyl acetate; the catalyst is composed of a support and alkaline earth metal oxides and alkali metal oxides supported on the surface of the support; wherein the support is selected from at least one of silicon oxide, aluminum oxide, titanium oxide, and zirconium oxide; wherein the alkaline earth metal oxide is selected from at least one of magnesium oxide, calcium oxide, strontium oxide, and barium oxide; wherein the alkali metal oxide is selected from at least one of lithium oxide, sodium oxide, and potassium oxide; wherein the loading of alkaline earth metal oxide in the catalyst is 0.01–10 wt%, the loading of alkali metal oxide is 0.05–5 wt%, and the remainder is the support.

This invention discloses a radiation-resistant glass, its preparation method, and its application. The radiation-resistant glass comprises the following components in weight percentage: silicon dioxide 60%-70%; sodium oxide 13%-18%; zinc oxide 3%-6%; aluminum oxide 2%-6%; boron trioxide 1%-6%; strontium oxide 1%-3%; cerium dioxide 4.7%-5.5%; lanthanum trioxide / hafnium dioxide 1%-3%; and ammonium difluoride 0.3%-1%. The technical problem to be solved is to significantly improve the high-energy particle radiation protection and light transmittance of the glass by selecting a specific formulation.

The present application relates to the technical field of ceramic substrate, and proposes a breakdown-resistant multilayer ceramic substrate and a preparation method thereof.The breakdown-resistant multilayer ceramic substrate comprises the following components by weight: 85-95 parts of alumina, 4-6 parts of a first sintering aid, 2-3 parts of a second sintering aid, 2-4 parts of a dispersing agent, 7-9 parts of a binder, 2-3 parts of a plasticizer, and 60-70 parts of water; the preparation method of the first sintering aid comprises the following steps: uniformly mixing silicon dioxide and strontium oxide, melting, and then performing ball milling after water quenching cooling to obtain the first sintering aid; and the second sintering aid is a rare earth oxide.Through the above technical solution, the problem of insufficient breakdown resistance of the multilayer ceramic substrate in the prior art is solved.

The present disclosure provides a capacitor including a first electrode, a second electrode disposed spaced apart from the first electrode, a dielectric layer disposed between the first electrode and the second electrode and including strontium titanium oxide, and a buffer layer disposed between the first electrode and the dielectric layer, wherein the buffer layer may include germanium oxide and a germanium material portion, and the germanium material portion may be composed of germanium uncombined with oxygen.

To develop a composite of a new constitution containing a powder having a radiation shielding function in a high content.SOLUTION: Molten aluminum is impregnated and filled into all voids of a preform made of a mixture containing one or more kinds of radiation shielding powders selected from gadolinium oxide, boron carbide, boron oxide, boron, barium sulfate, strontium oxide, tungsten, tungsten oxide, tungsten carbide, molybdenum, molybdenum oxide, iron powder, iron oxide powder, and ferrite powder and a liquid silica-based binder, the mixture containing the radiation shielding powders in a range of 3 to 85% in total; In the composite body having the radiation shielding function and the method for manufacturing the same, a liquid organic-inorganic sealing agent is impregnated and solidified to form the composite body, and a liquid silica-based binder has characteristics capable of forming a preform at a temperature at which the radiation shielding powder is not decomposed.SELECTED DRAWING: None

The invention belongs to the technical field of ceramic lining plate preparation, and particularly relates to a wear-resistant ceramic lining plate and a preparation method thereof. The wear-resistant ceramic lining plate is prepared from the following raw materials: aluminum oxide, a sintering aid, aluminum titanate, modified urea resin microspheres, hafnium boride, tungsten disilicide and a KH-550 silane coupling agent, and the sintering aid is a mixture of niobium pentoxide, strontium oxide, lanthanum oxide and magnesium oxide. According to the wear-resistant ceramic lining plate, aluminum oxide serves as a main raw material, a mixture of niobium pentoxide, strontium oxide, lanthanum oxide and magnesium oxide serves as a sintering aid, a compound of modified urea-formaldehyde resin microspheres, hafnium boride and tungsten disilicide serves as a reinforcing and toughening phase, aluminum titanate serves as a conditioning agent, and the raw materials have a synergistic effect; and it is ensured that the prepared ceramic lining plate has good wear resistance, hardness and toughness.

The present disclosure provides a novel positive electrode active material for a chloride ion battery, a method for manufacturing the same, a positive electrode mixture for a chloride ion battery comprising such a positive electrode active material, and a chloride ion battery comprising such a positive electrode mixture. The positive electrode active material for a chloride ion battery according to the present disclosure is strontium ruthenium oxide having a layered perovskite structure. A method for producing a positive electrode active material for a chloride ion battery according to the present disclosure comprises the steps of: (a) preparing a raw material mixture by mixing strontium carbonate and ruthenium oxide; (b) granulating the raw material mixture to form granules; and (c) firing the particles. The positive electrode mixture for a chloride ion battery according to the present disclosure contains the positive electrode active material for a chloride ion battery according to the present disclosure. The chloride ion battery of the present disclosure has a positive electrode active material layer, and the positive electrode active material layer contains the positive electrode mixture for the chloride ion battery of the present disclosure.

The invention relates to a method of providing an ore concentrate solution suitable for beneficiation processing, the method including the step of contacting an ore with one or more metal bases at elevated temperature. The one or more metal bases at elevated temperature may form a super-alkaline media that partially or fully dissolves the ore. Typically, the one or more metal bases are alkali metal bases, preferably chosen from lithium hydroxide, sodium hydroxide, potassium hydroxide, rubidium hydroxide or caesium hydroxide, or alkaline earth bases, preferably chosen from calcium hydroxide, barium hydroxide or strontium hydroxide. The one or more metal bases at elevated temperature may form a super-alkaline media that partially or fully dissolves the ore.

This application relates to the technical field of electromagnetic wave absorbing materials, and particularly to a lightweight radar absorbing material and its applied coating. The lightweight radar absorbing coating is composed of the following components by weight: film-forming resin 25-30%, additives 0-15%, and the balance is modified absorbent; the modified absorbent is prepared by blending and modifying a core-shell magnet and a coating emulsion; the core-shell magnet is prepared by atomically depositing strontium oxide on the surface of iron oxide; the coating emulsion is composed of polycarbonate polyol, diisocyanate, and a catalyst. The coating prepared from the above components effectively takes into account both lightweight and anti-radar effects, and has extremely remarkable effects when applied to special fields such as aircraft.

The invention provides a chromium-free iron-based gas phase fluorination catalyst as well as a preparation method and application thereof, and relates to the technical field of fluorine chemical industry. Based on 100 parts by mass of a carrier, the catalyst comprises 20-40 parts by mass of fluoride of iron; 5-15 parts by mass of a first auxiliary agent, wherein the first auxiliary agent comprises metal fluorides of one or more elements selected from titanium, tin and antimony; 5-10 parts by mass of a second auxiliary agent, wherein the second auxiliary agent comprises one or more of calcium peroxide, strontium peroxide, magnesium peroxide, potassium permanganate, zinc peroxide and sodium percarbonate; 1-3 parts by mass of a binder; and 100 parts by mass of a carrier. A proper amount of the specific second auxiliary agent is added into the catalyst, so that the catalyst can be decomposed at a proper temperature to release heat and generate oxygen, the oxygen can be provided through decomposition of the second auxiliary agent in the fluorination reaction process, carbon deposition on the catalyst is eliminated in situ, and the service life of the catalyst is prolonged; the catalyst is free of chromium element, non-toxic and environment-friendly; the raw materials are easily available, and the cost advantage is prominent.

The application discloses a high imaging resolution optical glass blank for a medium-free holographic imaging element, and particularly relates to the field of optical glass blanks, and comprises the following components in mass fraction: 100-125 parts of silicon dioxide, 12-25 parts of boron oxide, 10-18 parts of sodium oxide, 5-12 parts of aluminum oxide, 6-15 parts of strontium oxide, 2-6 parts of magnesium oxide, 1-4 parts of calcium oxide, 0.8-2.5 parts of cerium oxide and 0.2-1.0 parts of praseodymium oxide. The rare earth ion doping structure formed by the cerium oxide and the praseodymium oxide is embedded in the silicon-oxygen-boron-oxygen network structure formed by the silicon dioxide and the boron oxide during the glass melting process, and a group of valence state trapping energy structures are formed. The free state ion migration inhibition network formed by the rare earth ion trapping energy structure and the limited skeleton mechanism is constructed, so that the nonlinear amplification problem that the pattern boundary is blurred and misread due to the high-frequency scattering induced by trace impurities in the prior art is solved.

The invention discloses a samarium monatomic and strontium-doped neodymium oxide composite catalyst and a preparation method thereof, a nonylphenol electrochemical sensor and application thereof. The preparation method of the composite catalyst comprises the following steps: adding resorcinol, a formaldehyde solution and Sm (NO3) 3.6 H2O into an absolute ethyl alcohol-based colloidal suspension to carry out sol-gel treatment, and carrying out carbonization and etching to obtain Sm-SAC; the preparation method comprises the following steps: dropwise adding a first solution containing strontium hydroxide and neodymium nitrate hexahydrate into a second solution containing 1, 2, 3-triazole, trimesic acid and polyvinylpyrrolidone to prepare a Sr-Nd bimetallic precursor, annealing to obtain strontium-doped neodymium oxide, adding the Sm-SAC and the strontium-doped neodymium oxide into water, and carrying out ultrasonic dispersion, centrifugation, washing and drying to obtain the composite catalyst. The composite catalyst provided by the invention has strong adsorption capacity, efficient electrocatalytic oxidation activity, excellent anti-interference capability and structural stability, and the sensor has high recovery rate, low signal attenuation and excellent reusability.

The invention relates to the technical field of ceramic substrates, and provides an anti-breakdown multilayer ceramic substrate and a preparation method thereof. The breakdown-resistant multilayer ceramic substrate comprises the following raw materials in parts by weight: 85-95 parts of aluminum oxide, 4-6 parts of a first sintering aid, 2-3 parts of a second sintering aid, 2-4 parts of a dispersing agent, 7-9 parts of a binder, 2-3 parts of a plasticizer and 60-70 parts of water, the preparation method of the first sintering aid comprises the following steps: uniformly mixing silicon dioxide and strontium oxide, melting, quenching, cooling, and carrying out ball milling to obtain the first sintering aid; the second sintering aid is a rare earth oxide. According to the technical scheme, the problem of insufficient breakdown resistance of the multilayer ceramic substrate in the prior art is solved.

We provide phosphate glass with a high refractive index and low density. [Solution] The glass composition contains phosphorus oxide (P2O5), niobia (Nb2O5), barium oxide (BaO), and potassium oxide (K2O) as essential components, and may optionally contain titania (TiO2), calcium oxide (CaO), sodium oxide (Na2O), lithium oxide (Li2O), bismuth oxide (Bi2O3), strontium oxide (SrO), tungsten oxide (WO3), and other components, with the total of TiO2 + Nb2O5 being 1.0 mol% or more and 55.0 mol% or less. The glass can be characterized by a high refractive index at 587.56 nm at relatively low density at room temperature.

The glass composition includes phosphorus oxide (P2O5), niobium oxide (Nb2O5), barium oxide (BaO), and potassium oxide (K2O) as essential components, and can optionally include titanium oxide (TiO2), calcium oxide (CaO), sodium oxide (Na2O), lithium oxide (Li2O), bismuth oxide (Bi2O3), strontium oxide (SrO), tungsten oxide (WO3), and other components. The glass can be characterized as having a high refractive index at 587.56 nm with a comparable room temperature low density.

The application discloses an ultraviolet photosensitive alkali-free glass substrate and a manufacturing method thereof, and belongs to the technical field of glass. The technical scheme is as follows: the components include the following components in percentage by mass: 62-72% of silicon dioxide, 8-12% of diboron trioxide, 10-16% of aluminum oxide, 2-5% of barium oxide, 1-3% of magnesium oxide, 1-3% of calcium oxide, 1-3% of strontium oxide, 2-5% of zinc oxide, 0.5-1.5% of tin dioxide and 2-4% of a photosensitive agent, wherein the photosensitive agent is silver fluoride and cerium tetrafluoride in a mass ratio of (1-2):(1-2). The application improves the through-hole manufacturing efficiency and precision, reduces the production cost, and is expected to promote the further development of semiconductor packaging technology.

The use of selective deposition of silicon nitride can eliminate conventional patterning steps by allowing silicon nitride to be deposited only in selected and desired areas. Using a silicon iodide precursor alternately with a thermal nitrogen source in an ALD or pulsed CVD mode, silicon nitride can be deposited preferentially on a surface such as silicon nitride, silicon dioxide, germanium oxide, SiCO, SiOF, silicon carbide, silicon oxynitride, and low k substrates, while exhibiting very little deposition on exposed surfaces such as titanium nitride, tantalum nitride, aluminum nitride, hafnium oxide, zirconium oxide, aluminum oxide, titanium oxide, tantalum oxide, niobium oxide, lanthanum oxide, yttrium oxide, magnesium oxide, calcium oxide, and strontium oxide.

The application discloses a kind of photothermal glass and preparation method thereof, it is related to photothermal glass technical field, including main body glass and trace additive;Main body glass includes the following components according to mass percentage:Si O2 58.8~63.4%;A l2O3 12.4~14.6%;Na2O 9.8~13.6%;K2O 4.6~6.8%;MgO 5.6~7.4%;ZrO2 0.6~1.2%;B2O3 0~0.3%;And Fe2O3<0.01%;Trace additive is one or more in CaO, SrO, BaO, ZnO.The trace additive (calcium oxide, barium oxide, strontium oxide, zinc oxide) in the application can also promote the melting of glass raw materials.The photothermal glass prepared by the application has a thermal stability greater than 210℃, an acid resistance level of H1, and an alkali resistance level of A1.

The invention relates to the technical field of magnesium alloy surface treatment, in particular to strontium salt and calcium salt composite chemical conversion liquid for magnesium alloy, a preparation method and a preparation method of a conversion film. The method comprises the following steps: firstly, preparing a saturated calcium bicarbonate solution and a saturated strontium hydroxide solution; sequentially adding a saturated strontium hydroxide solution and hydrogen peroxide into water to obtain a strontium hydroxide preparation solution; preparing a sodium bicarbonate solution; mixing the saturated calcium bicarbonate solution, the strontium hydroxide preparation solution and the sodium bicarbonate solution to obtain a strontium salt and calcium salt composite chemical conversion solution; and the magnesium alloy part to be treated is placed in the strontium salt and calcium salt composite chemical conversion liquid, and after no bubble emerges, the magnesium alloy part subjected to surface treatment is taken out, washed with water and blow-dried. The method is low in cost, low in energy consumption and environmentally friendly, and the prepared composite conversion film composed of SrCO3, CaCO3, MgCO3, MgO, Al2O3 and other phases is uniform, fine, smooth and flat and has excellent corrosion resistance.

This application discloses a method for producing acetonitrile, comprising the following steps: in a reactor, contacting an acetate, ammonia, and a catalyst to react and obtain acetonitrile; wherein the acetate is selected from at least one of methyl acetate, ethyl acetate, propyl acetate, butyl acetate, and cyclohexyl acetate; wherein the catalyst is composed of a support and a divalent transition metal oxide, an alkaline earth metal oxide, and an alkali metal oxide supported on the surface of the support; wherein the divalent transition metal oxide is selected from at least one of manganese oxide, ferrous oxide, cobalt oxide, nickel oxide, copper oxide, and zinc oxide; wherein the alkaline earth metal oxide is selected from at least one of magnesium oxide, calcium oxide, strontium oxide, and barium oxide; and wherein the alkali metal oxide is selected from at least one of lithium oxide, sodium oxide, and potassium oxide.

The present invention relates to a method of providing a concentrate solution suitable for use in a beneficiation process, the method comprising the step of contacting the ore with one or more metal bases at an elevated temperature. The one or more metal bases may form an ultra-alkaline medium that partially or fully dissolves the ore at elevated temperatures. Typically, the one or more metal bases are alkali metal bases, preferably selected from lithium hydroxide, sodium hydroxide, potassium hydroxide, rubidium hydroxide or cesium hydroxide; or an alkaline earth metal base, preferably selected from calcium hydroxide, barium hydroxide or strontium hydroxide. The one or more metal bases may form an ultra-alkaline medium that partially or fully dissolves the ore at elevated temperatures.

The invention discloses a novel rotary kiln ceramic lining for calcining a lithium battery positive electrode material and a preparation method of the novel rotary kiln ceramic lining, and relates to the field of new energy and ceramics. The ceramic lining takes at least one of calcium titanate, strontium titanate, barium titanate, calcium zirconate, strontium zirconate and barium zirconate as a main body material, and is prepared from at least one of calcium oxide, strontium oxide, barium oxide or a precursor thereof, and zirconium dioxide or titanium dioxide. The preparation method comprises the following steps: mixing the raw materials and the binder, drying, crushing and sieving; performing compression molding on the materials; calcining the green body to directly obtain the ceramic lining or calcining the green body to obtain a pre-sintered material, and preparing the ceramic lining from the pre-sintered material. The ceramic lining prepared by the invention has extremely low porosity, and can effectively prevent the positive electrode material precursor from permeating into the ceramic lining. The ceramic lining is not easy to react with the positive electrode material, has excellent erosion resistance, and can be used as a rotary kiln lining for calcining the positive electrode material of the lithium battery.

The application discloses a glass frit for a single-crystal silicon solar cell front paste, a paste, and a single-crystal silicon solar cell. The glass frit comprises 1-30 mol% of lithium oxide, 5-40 mol% of bismuth oxide, 5-40 mol% of lead oxide, 1-40 mol% of silicon oxide, and X, wherein X is any one or a mixture of several of copper oxide, cesium oxide, rubidium oxide, sodium oxide, potassium oxide, aluminum oxide, magnesium oxide, strontium oxide, tin oxide, zinc oxide, or tungsten oxide, and the molar content of any one of the oxides in X is 1-10 mol%, and the content of X is not more than 50 mol%. The conductive paste prepared by using the glass frit contains a lead-bismuth-silicon oxide glass system, the system has enhanced resistance to acetic acid attenuation, ensures a sintering window at a high-temperature fast-firing sintering temperature, and X has strong corrosiveness, so that a lower contact area can be obtained. The conductive paste has high resistance to acetic acid in a wide sintering window.

The application discloses a kind of multi-element oxide doped indium zinc oxide target material and preparation method and application thereof, and the doped indium zinc oxide target material of the application includes the following mass percentage components: the content of indium oxide is 80.0%~88.6%;The content of zinc oxide is 10.9%~15.8%, the content of strontium oxide is 0.2%~1.8%, the content of bismuth oxide is 0.2%~0.6%, the content of vanadium oxide is 0.4%~1.2%, and the sum of each component is 100%.The target material is prepared by adding strontium oxide, bismuth oxide and vanadium oxide powder, mixing ball milling, pressing forming and sintering, the density of the target material is improved, the resistivity of the target material is reduced, the grain size of the sintered target material is uniform, the strength of the target material is improved, and the performance of the target material is effectively improved.The electrical stability of the thin film and the thin film mobility are effectively improved by sputtering the prepared multi-element oxide doped IZO target material.

The invention discloses a multilayer chip ceramic capacitor and a preparation method thereof, and relates to the technical field of ceramic capacitors, the multilayer chip ceramic capacitor comprises a silicon substrate layer, a dielectric ceramic layer, internal electrode layers and terminal electrodes, the terminal electrodes are arranged above the silicon substrate layer, a plurality of internal electrode layers are arranged below the terminal electrodes, and the dielectric ceramic layer is arranged below the internal electrode layers. Dielectric ceramic layers are arranged among the plurality of internal electrode layers; the dielectric ceramic layer adopts a nanoscale barium titanate plate, and lanthanum oxide, strontium oxide and calcium oxide are doped in the barium titanate plate; the internal electrode layer is made of nickel particles and is coated with rare earth oxide so as to reduce oxidation; the end electrode comprises a first anti-corrosion layer, a second anti-corrosion layer and a third anti-corrosion layer, the third anti-corrosion layer is fixedly connected with the top end of the silicon substrate layer, the second anti-corrosion layer is arranged at the top end of the first anti-corrosion layer, and the third anti-corrosion layer is arranged at the top end of the second anti-corrosion layer, so that the end electrode can be prevented from generating metal migration in the long-term use process; the contact effect is improved.