65 results about "Valve metal" patented technology

The invention relates to the technical field of surface strengthening treatment and coating preparation, in particular to a micro-arc oxidation electrolyte, a preparation method of the micro-arc oxidation electrolyte and a preparation method of an oxide ceramic coating on the surface of a magnesium-copper dissimilar metal material component. The invention provides a micro-arc oxidation electrolyte. The micro-arc oxidation electrolyte comprises a main film-forming agent, an arcing aid, a pH regulator, a corrosion inhibitor and water, the main film-forming agent comprises ammonium fluozirconate and / or potassium fluozirconate; the arcing aid comprises one or more of disodium hydrogen phosphate, sodium dihydrogen phosphate, ammonium dihydrogen phosphate and diammonium hydrogen phosphate; the corrosion inhibitor comprises one or more of hexamethylenetetramine, ammonium bifluoride and triethanolamine. The micro-arc oxidation electrolyte breaks through the problem that valve metal and non-valve metal cannot be subjected to arc discharge at the same time for micro-arc oxidation treatment in the micro-arc oxidation process.

Electrodes, electrolytes, capacitive elements, capacitors, and methods of making or modifying or impregnating electrodes.SOLUTION: According to the present application, an electrode is provided having a substrate and a sintered body on a first major surface of the substrate. The substrate includes a first valve metal. The sintered body comprises fused or sintered particles comprising a second valve metal. The first major surface of the substrate is surface modified.SELECTED DRAWING: Figure 2

This utility model belongs to the technical field of cooling water tower water distribution pipelines, and relates to a device for replacing water distribution nozzles in cooling water towers. It includes two opposing clamps, each with a hollow interior forming a channel. A semi-circular slot is horizontally oriented through the bottom of each clamp, and the two clamps encircle the water distribution branch pipe through the semi-circular slot. Connecting ears are provided on the left and right sides of each clamp, and fastening bolts are installed between the opposing connecting ears. Sealing silicone layers are provided at both ends of each clamp. A metal elbow is connected to the top of each clamp, communicating with the internal channel of the clamp. A valve is installed on the metal elbow, and a nozzle is connected to the end of the metal elbow. Filter holes are provided on the inner wall of the semi-circular slot. This utility model replaces traditional welding with mechanical bolt fixing. The clamp bolts are tightened, reducing the time required for single-point modifications, minimizing downtime losses, ensuring continuous production, and saving on welding equipment, professional personnel, and anti-corrosion treatment costs. Spare parts can be prefabricated in batches.

The utility model discloses a positioning device for valve metal part machining, belongs to the technical field of valve metal part machining, and aims to solve the problems that in the prior art, when a valve body is discharged, a worker needs to sequentially twitch a mounting plate below the valve body, and the valve body can vertically fall in the middle of a movable plate along the guide of a material guide body under the condition of no limiting of the mounting plate; however, under the condition that the valve body vertically falls down without help of personnel, the valve body and the movable plate are possibly damaged when making contact with the movable plate, the purpose of valve body discharging is achieved through repeated manual pulling, and the whole device is troublesome and not portable enough. Comprising a base, an assembling frame is fixedly arranged on one side of the upper portion of the base, a preset groove is formed in the middle of the upper portion of the base, a stable discharging mechanism is installed in the middle of the preset groove and the middle of the assembling frame in a combined mode, the stable discharging mechanism comprises a displacement assembly and a lead screw sliding sleeve, and an operation table is fixedly arranged on the inner side of the lead screw sliding sleeve; positioning mechanisms are installed on the two sides of the upper portion of the operation table.

FIELD: protective coatings.SUBSTANCE: method for forming a protective oxide-ceramic coating on the surface of products made of valve metals and alloys by the plasma electrolytic oxidation method involves immersing the product as an electrode together with a counter electrode in a bath filled with an aqueous alkaline electrolyte, and supplying rectangular pulses of anodic and cathodic voltage to the electrodes using a pulsed power source. Anode and cathode voltage pulses are supplied with a current-free pause between them, the value of which is 4.8 times the duration of the anode pulse. The amplitude values of the cathode voltage pulses range from 85 to 149 V with a pulse repetition frequency from 1000 Hz to 4000 Hz, while the current pulse repetition frequency is additionally regulated.EFFECT: obtaining oxide-ceramic coatings with specified properties under reduced energy conditions, with lower values of cathode voltage.1 cl, 2 ex

The utility model relates to the technical field of polishing devices, in particular to a burr polishing device for a valve metal pressing ring. The technical problems that an existing burr grinding device mostly adopts a manual or semi-automatic mode, due to the fact that pressing rings are different in size, the grinding device needs to be manually adjusted when fixing the pressing rings, and therefore the working efficiency can be affected are solved. According to the technical scheme, the burr grinding device for the valve metal pressing ring comprises a moving assembly, an operation table, a rotating grinding assembly and a fixing assembly, the metal pressing ring with the inner side being ground is placed outside an arc-shaped rubber pad, meanwhile, two sets of arc-shaped telescopic sleeves are adjusted to be attached, and then the metal pressing ring is driven by a driver to be ground. And a second sliding block drives an arc-shaped telescopic sleeve to slide along a second sliding groove, meanwhile, an arc-shaped telescopic column stretches out and draws back to the appropriate size of the metal pressing ring along the arc-shaped telescopic sleeve to fixedly clamp the metal pressing ring, the outer side of the metal pressing ring can be further ground by a grinding head conveniently, and the operability of the grinding device is enhanced.

The application discloses a water-based foam extinguishing agent performance test integrated device and a test method, which comprises a foaming device, a glass foam pipe and a metal foam pipe arranged in the foaming device, an operation terminal and an air compression device connected with the foaming device; the upper part of the glass foam pipe is provided with an opening, the opening is connected with a foam tank through a pipeline, and a feeding pump and a valve F1 are further arranged between the foam tank and the opening; the upper part of the metal foam pipe is provided with a first opening and a second opening, the first opening is connected with the foam tank through a pipeline provided with a valve F3, and the foam in the foam tank flows into the glass foam pipe and the metal foam pipe through the valve F1 and the valve F3 respectively; and the second opening is connected with a foam gun through a pipeline. The application simplifies the test equipment, concentrates three foam performances (foaming, stable foaming and extinguishing performance) in one device, and can measure the foaming multiple, liquid separation time and extinguishing time and other parameters of the foam extinguishing agent in sequence through simple parameter setting and valve switching.

A solid electrolytic capacitor has a high withstand voltage, including: a porous anode body including a valve metal and a dielectric oxide film layer formed on a surface of the valve metal; and an electrolyte layer formed on a surface of the dielectric oxide film layer. The electrolyte layer includes a first conductive polymer layer formed by chemical polymerization and in contact with the dielectric oxide film layer, a second conductive polymer layer formed by electrolytic polymerization and formed on a side opposite to the dielectric oxide film layer with respect to the first conductive polymer layer, and a barrier layer having conductivity and formed between the first conductive polymer layer and the second conductive polymer layer.10 The barrier layer is configured to prevent a conductive polymer layer from being formed by electrolytic polymerization in a region closer to the anode body than the barrier layer.

To provide a solid electrolytic capacitor that has a high withstand voltage.SOLUTION: A solid electrolytic capacitor includes: a porous anode body including a valve metal and a dielectric oxide film layer formed on a surface of the valve metal; and an electrolyte layer formed on a surface of the dielectric oxide film layer. The electrolyte layer includes: a first conductive polymer layer formed by chemical polymerization and in contact with the dielectric oxide film layer; a second conductive polymer layer formed by electrolytic polymerization and formed on a side opposite to the dielectric oxide film layer with respect to the first conductive polymer layer; and a barrier layer having conductivity and formed between the first conductive polymer layer and the second conductive polymer layer. The barrier layer prevents a conductive polymer layer from being formed by electrolytic polymerization in a region closer to the anode body than the barrier layer.SELECTED DRAWING: Figure 2

A solid electrolytic capacitor having a thickness of about 1,000 µm or less is provided. The capacitor comprises a capacitor element comprising an anode component comprising a porous anode body disposed on a surface of an anode substrate. The anode substrate is formed from a valve metal composition and the porous anode body is formed from a sintered powder containing a valve metal composition and having a thickness of about 650 µm or less. The capacitor element further comprises a cathode coating disposed over a dielectric and the porous anode body. The cathode coating comprises a solid electrolyte containing conductive polymer particles, wherein at least a region of the anode substrate is free of the cathode coating. An anode termination is electrically connected to the region of the anode substrate that is free of the cathode coating, and a cathode termination is electrically connected to the cathode coating.

A solid electrolytic capacitor including a porous body containing a valve metal, a dielectric layer formed on a surface of the porous body, and two or more conductive layers covering the dielectric layer, the two or more conductive layers including a first conductive layer formed on a surface of the dielectric layer and a second conductive layer laminated on the first conductive layer, the second conductive layer contains a polyaniline composite in which polyaniline is doped with a proton donor.

This invention achieves thinness and low resistance, providing a small, high-capacity solid-state multilayer aluminum electrolytic capacitor. [Solution] In a thin solid laminated aluminum electrolytic capacitor, the laminated core 2 is enclosed inside the outer shell 1 by laminating and fixing multiple electrode sheets. The electrode sheets are based on valve metal foil, with one end being the anode region 2011 and the other end being the cathode region 2012. An insulation rubber 2013 separates the anode region and the cathode region. The anode lead frame is fitted to the bottom of the outer shell, with its upper end electrically connected to the anode end of the laminated core, and its lower end exposed as the anode terminal 302 by penetrating the bottom of the outer shell. The cathode lead frame is fitted to the bottom of the outer shell, with its upper end electrically connected to the cathode end of the laminated core, and its lower end exposed as the cathode terminals 403 and 404 by penetrating the bottom of the outer shell. By fitting the positive and negative lead frames to the bottom of the outer shell, there is no need to bend them as electrode terminals.

An improved formed electrolyte suitable for forming an oxide on a valve metal anode and an improved capacitor comprising an oxide formed in the formed electrolyte are provided. The formation electrolyte comprises an inositol derivative defined by Formula (1): wherein each of R1 to R6 is defined.

According to the application, an electrode and an electrolyte are provided. Furthermore, a capacitive element and a capacitor containing the electrolyte or both are provided. The electrode has a substrate and a sintered body on a first main surface of the substrate. The substrate comprises a first valve metal. The sintered body comprises bonded or sintered particles containing a second valve metal. A compound is adsorbed at cracks in the sintered body or at locations where an oxide layer is at least partially absent. This compound is configured to at least partially passivate these locations. Alternatively, such a compound can also be provided in the electrolyte of an electrolytic capacitor.

Provided is a solid electrolytic capacitor having a high withstand voltage. A solid electrolytic capacitor (1) is provided with: a porous anode body having a valve metal (11) and a dielectric oxide film layer (12) formed on the surface of the valve metal (11); and an electrolyte layer (20) formed on the surface of the dielectric oxide film layer (12). The electrolyte layer (20) is provided with: a first conductive polymer layer (21) that is formed by chemical polymerization and is in contact with the dielectric oxide film layer (12); a second conductive polymer layer (22) formed by electrolytic polymerization and formed on the opposite side of the dielectric oxide film layer (12) with respect to the first conductive polymer layer (21); and a conductive barrier layer (23) formed between the first conductive polymer layer (21) and the second conductive polymer layer (22). The barrier layer (23) prevents a conductive polymer layer from being formed by electrolytic polymerization in a region closer to the anode body (10) than the barrier layer (23).

The utility model relates to the field of valve metal part machining, in particular to valve metal part cleaning equipment capable of being rotationally operated. The technical problem that in the using process of cleaning equipment, only simple cleaning operation can be conducted on valve metal parts, the cleanliness is poor, rotating cleaning operation cannot be conducted on the valve metal parts, and the cleaning efficiency is seriously reduced is solved. According to the technical scheme, the valve metal part cleaning equipment capable of being rotationally operated comprises a cleaning box and further comprises a lifting assembly, a spraying assembly and a rotary cleaning assembly. By arranging the lifting assembly, the valve metal part can be soaked, cleaned and lifted, the soaked valve metal part can be sent to the next procedure conveniently, then the soaked valve metal part is subjected to spraying cleaning operation through the spraying assembly, the more efficient cleaning effect is achieved, and the valve metal part can be cleaned by rotating the cleaning assembly. And all-directional rotating cleaning of the cleaning cotton sleeve on the valve metal piece is facilitated.

A solid electrolytic capacitor that includes: a valve metal base including dielectric layers on both surfaces in a thickness direction thereof; a conductive paste layer on each of both sides of the dielectric layer relative to the valve metal base in the thickness direction, the conductive paste layer including a conductive filler; an insulating layer on each of the conductive paste layers on the side opposite from the valve metal base, the insulating layer having a via hole; an outer electrode layer on each of the insulating layers, the outer electrode layer electrically connected to the conductive paste layer through the via hole and in direct contact with a portion of the conductive filler in the conductive paste layer in the via hole when viewed in a lamination direction of the conductive paste layer, the insulating layer, and the outer electrode layer.

A solid electrolytic capacitor containing a porous anode and a solid electrolyte is provided. The porous anode is formed from a sintered valve metal powder that is anodically oxidized to form a dielectric layer thereon having a dielectric thickness of about 70 nm or more, wherein the porous anode has a pore size distribution in which the pores have a size of from about 165 to about 270 nm at a pore volume corresponding to at least 80% of the total pore volume and exhibits a volumetric wet capacitance of about 3,900 µF / cm3 or more. The solid electrolyte contains conductive polymer particles that are disposed within the pores of the porous anode. Further, the solid electrolytic capacitor exhibits a dielectric strength of about 0.6 V / nm or more.

This invention relates to a chlorination electrolyzer comprising a housing having an inlet and an outlet suitable for brine circulation; and at least one pair of bipolar electrodes facing each other and disposed within the housing. The electrolyzer is characterized in that each of the at least one pair of bipolar electrodes comprises: a valve metal substrate; an active coating disposed on the substrate comprising at least one layer of a catalytic composition containing ruthenium and titanium; and a top coating disposed above the active coating, comprising at least one layer of a composition containing oxides of tantalum, niobium, tin, or combinations thereof. The invention also relates to a self-cleaning electrolytic chlorination system comprising such an electrolyzer, a method for producing it, its use in normal and low-salinity tanks for hypochlorite-mediated water disinfection, and a method for hypochlorite-mediated water disinfection.

The utility model discloses a cutting device for valve metal spare processing belongs to valve metal spare processing field, aims at solving the contact characteristic of the grinding wheel and the metal valve metal spare in the cutting process under the prior art, and the scrap often will preferentially accumulate in the area that the grinding wheel first contacts the metal valve metal spare in the collecting groove, with the continuous development of processing, the scrap in the area gradually accumulates, forms the higher scrap accumulation layer, makes the scrap under the subsequent cutting difficultly slide to the deep place of collecting groove, instead easy to bounce to the scrap of accumulation and further bounce out of the collecting groove, not only leads to the scrap collection efficiency to reduce greatly, and the scrap that scatters in the collecting groove is difficult to clean, increases the labor intensity and cleaning cost of worker's problem. Including base, the upper side right -hand member of base is installed with the mounting seat, the inside upper end of mounting seat is installed with motor, and the left -hand member of motor is installed with cutting grinding wheel.

According to applications, an electrode is provided having a substrate and a sintered body on a first major surface of the substrate. The substrate includes a first valve metal. The sintered body includes fused or sintered particles comprising a second valve metal. The first major surface of the substrate is surface-modified.

The application discloses an electrolytic water hydrogen evolution composite catalytic electrode and a preparation method thereof. The composite catalytic electrode comprises a nickel base, a composite catalyst layer loaded on the nickel base, and a metal oxide protective layer coated on the surface of the composite catalyst layer; wherein the composite catalyst layer comprises platinum, ruthenium, palladium noble metal catalysts and catalytic additives, the metal oxide protective layer is a nano-porous metal oxide layer, and the metal oxide is one or more of valve metal oxides and rare earth metal oxides. The electrolytic water hydrogen evolution composite catalytic electrode comprises a platinum, ruthenium, palladium and additive composite catalyst layer and a metal oxide protective layer coated on the outside; the metal components in the composite catalyst layer can be stably combined with the metal base, the metal oxide protective layer is similar in structure to the oxides in the composite catalyst layer, and can be firmly covered on the surface of the composite catalyst layer; so that the composite catalytic electrode can exhibit high electrolytic water hydrogen evolution catalytic activity, high structural stability, long-term stability, strong anti-reverse polarity and strong anti-deposition capacity.

An electrolytic capacitor that can suppress a decrease over time of capacity, a cathode body included in the electrolytic capacitor, and a production method of the electrolytic capacitor are provided. The electrolytic capacitor includes an anode foil, a cathode body, and electrolytic solution. The anode foil is formed of valve metal and has dielectric oxide film formed on a surface of the foil. The cathode body includes cathode foil formed of valve metal and a carbon layer laminated on the cathode foil. An interfacial resistance between the cathode foil and the carbon layer is 1.8 mΩ·cm2 or less.

According to the application, an electrode is provided having a substrate and a sintered body on a first main surface of said substrate. The substrate comprises a first valve metal. The sintered body comprises merged or sintered particles that comprise a second valve metal. The first main surface of the substrate is surface-modified

A solid electrolytic capacitor having a thickness of about 1,000 μm or less is provided. The capacitor comprises a capacitor element comprising an anode component comprising a porous anode body disposed on a surface of an anode substrate. The anode substrate is formed from a valve metal composition and the porous anode body is formed from a sintered powder containing a valve metal composition and having a thickness of about 650 μm or less. The capacitor element further comprises a cathode coating disposed over a dielectric and the porous anode body. The cathode coating comprises a solid electrolyte containing conductive polymer particles, wherein at least a region of the anode substrate is free of the cathode coating. An anode termination is electrically connected to the region of the anode substrate that is free of the cathode coating, and a cathode termination is electrically connected to the cathode coating.

An electrode foil for an electrolytic capacitor contains a valve metal, and includes a core portion, and a porous portion continuous with the core portion. The porous portion has a thickness T μm, and includes an inner layer region located on the core portion side, and a surface layer region located opposite to the core portion. The surface layer region is a region within a distance T / 4 from an outer surface of the porous portion, and the inner layer region is a region within a distance T / 4 from a boundary of the porous portion with the core portion. An average size D1 nm of pores in the surface layer region is smaller than an average size D2 nm of pores in the inner layer region.

The invention discloses a method and device for testing the electrical property of a dielectric film after formation of a porous valve metal anode, and the method comprises the steps: dipping a to-be-tested product into a solution, connecting a positive electrode and a negative electrode into a power generation device through alligator clips, increasing the voltage within a certain time according to a certain stepping voltage, and when the voltage begins to drop and the current rises, starting to test the electrical property of the dielectric film; when the oxide film is broken down, the resistance between the two electrodes is suddenly reduced, the current is instantly increased, and the output voltage is obviously reduced due to overlarge load current, so that the effect of judging the quality of the formed dielectric oxide film is achieved. Compared with an existing method which is characterized only through leakage current, the method has the advantages that the breakdown resistance evaluation of the oxide film is supplemented by testing the breakdown voltage, the performance of the dielectric oxide film can be reflected more comprehensively, and a more comprehensive detection basis is provided for the reliability of the solid electrolyte capacitor.

This invention provides a capacitor and manufacturing method that exhibit small ESR changes and long lifespan under high-temperature conditions. [Solution] The capacitor comprises an anode made of a valve metal, a dielectric film formed on the surface of the anode, and a cathode layer formed on the dielectric film, facing the anode with the dielectric film in between. The cathode layer comprises a semiconductor layer made of an inorganic semiconductor containing sulfur, formed on the dielectric film, and an extracted cathode formed on the semiconductor layer and facing the anode with the dielectric film and semiconductor layer in between. This capacitor is manufactured by a manufacturing method that includes an anode formation step for forming the anode, and a cathode formation step for forming the cathode layer, which includes a semiconductor layer formation step and an extracted cathode formation step. In the semiconductor layer formation step, a semiconductor layer is formed. In the extracted cathode formation step, an extracted cathode is arranged.

According to the application, an electrode is provided having a substrate and a sintered body on a first main surface of said substrate. The substrate comprises a first valve metal. The sintered body comprises merged or sintered particles that comprise a second valve metal. The first main surface of the substrate is surface-modified

The invention provides a polymer capacitor which is a solid electrolytic capacitor, and polydopamine is arranged between a dielectric layer on a valve metal surface of the capacitor and a polymer conductive polymer layer. Polydopamine is introduced between the dielectric layer and the high-molecular conductive polymer layer, the polydopamine is formed by self-polymerization of dopamine, the surface of the polydopamine contains groups such as phenolic hydroxyl groups and amino groups, the polydopamine and-OH on the surface of the dielectric layer of the metal oxide film can form hydrogen bonds, and meanwhile, the polydopamine and a continuous conjugated pi electron system ring of conductive high-molecular can form pi-pi accumulation; therefore, the bonding capacity between the metal oxide film dielectric layer and the high-molecular conductive polymer in the high-molecular solid electrolytic capacitor is improved, and the problem that the bonding capacity between the metal oxide film dielectric layer and the high-molecular conductive polymer in the high-molecular solid electrolytic capacitor is weak is solved. The invention also provides a preparation method of the polymer capacitor.