1069 results about "Silver coating" patented technology

A vacuum insulating glass (IG) unit is provided with an array of spacers/pillars between opposing glass sheets. At least some of the spacers/pillars are coated on at least one surface thereof with a dry lubricant and/or reflective material such as silver. This coating permits the glass sheet(s) to move relative to one another during thermal expansion while minimizing the degree to which the spacers/pillars scratch or crack the glass during such relative movement. A method of making an exemplary spacer/pillar includes transforming by chemical reaction silver ions on a core into a metallic silver coating thereby resulting in a coated spacer/pillar.

The invention discloses a chemical silver plating preparing conducting resin method on the graphite powder surface in the chemical silver plating and micro-electronics connection material technique domain, which comprises the following steps: oxidizing the graphite powder in the air at 600-650DEG C; putting the dispersant, reducer and stabilizing agent in de-ionized water for reduced liquid; adding in graphite powder to stir; putting the silver nitrate in the de-ionized water; adding in ammonia and sodium hydroxide to get argentamine; putting the reduced liquid in the argentamine liquid to finish chemical silver plating on the graphite powder surface; filtering; separating and washing; drying in vacuum to get silver coated graphite powder.

The invention relates to a method for copper powder surface chemical plating silver, belonging to field of chemical silver plating. Said method comprises following steps: putting copper powder into diluted acid of 5-10% to remove oxide on surface of copper powder; adding disperser of 1-30% of copper powder by weight, stabilizer of 10-60% of copper powder by weight into deionized water to form reducing liquid, adding copper powder and stirring; adding silver nitrate into deionized water, adding ammonia, stirring and adding sodium-hydroxide and getting silver amine solvent; adding silver amine solvent into reducing liquid under stirring, finishing chemical silver plating of copper surface 10-50 minutes later; filtering, separating and washing, vacuum drying and getting silver-coated copper powder. The process is characterized by simple preparation and raw material, reduced silver-plated layer on container wall by adding silver amine solvent into reducing liquid, high silver converting rate. The electrical resistance of got copper powder is smaller than 2*10-4 omegacm.

This is a argent metallization producing method of organic fibre and fabric, which belongs to vacuum membrane plating and electroplating technologic field and mainly solves the problems of quality and producing batches of silver-gilt organic and fabric. Through physical vapour phase deposition technology, it firstly arranges smoothly and rolls up tidily the organic fibre bundle and fabric; lay them in the vacuum room, plate silver by magnetic controlling and sputtering, and monolayer or multilayer continuously plate membrane; then plate mulriple argent membrane according to different using demands. The binding force of the metallic argentic ion and organ fibre of the present invention is strong, it has no pollution, low costs and can be continuously produced. The products are applied in such industry as electronics, war industry communication, medical treatment, special type of spinning and so on. For instance, electric shielded products, military used shielded tent, special type of spinning antibacterial materials and civil health care spinning products.

A silver-coated copper powder includes copper core particles and a silver coat layer located on the surface of the core particles. When S₁ is a BET specific surface area (m²/g) of the silver-coated copper powder; S₂ is a specific surface area (m²/g) calculated from a particle diameter D₅₀ obtained by the analysis of a microscopic image of the silver-coated copper powder; and t is a thickness of the silver coat layer, the silver-coated copper powder satisfies Expression: (S₁/S₂)≦0.005×t+1.45. The silver-coated copper powder has a volume cumulative particle diameter D_50L at a cumulative volume of 50 vol % as measured by laser diffraction-scattering method of 0.01 to 100 μm.

A method for enhancing the corrosion resistance of an article comprising a silver coating deposited on a solderable copper substrate is provided. The method comprises exposing the copper substrate having the immersion-plated silver coating thereon to an anti-corrosion composition comprising: a) a multi-functional molecule comprising at least one organic functional group that interacts with and protects copper surfaces and at least one organic functional group that interacts with and protects silver surfaces; b) an alcohol; and c) a surfactant.

A process of silver coating with no cyanogens at the action of magnetic field and impulse current. The main process is impulsive silver coating. Ingredients of the solution are as follow. AgNO3,50-60g/L; sodium thiosulfate, 250-350g/L; potassium, 90-110g/L; K2SO4,20-30g/L; boracic acid, 25-35g/L; brightener,5m/L. Stir at 20-40deg.C for 10min. pH of silvering solution is 4.2-4.8. Mean impulse current density is 0.5-1ms. Duty ratio is 5-15%. Orientation of magnetic field is parallel with that of impulse current. Square ratio of positive and negative pole is bigger than 2.

Embodiments disclosed herein generally relate to a temperature sensor disposed in an apparatus. In many semiconductor, liquid crystal display, solar panel or organic light emitting display fabrication processes, RF power is utilized to either ignite a plasma within the processing chamber or to provide supplemental energy to the process. Temperature control during many processes may be beneficial in order to produce a consistent product. Temperature sensors or thermocouples are sometimes utilized to measure the temperature of a substrate within a processing chamber. The RF power may have a negative impact on the temperature sensor. By coating the temperature sensor with a nanoparticle based metal coating, such as a silver coating, the negative impacts of the RF power on the temperature sensor may be reduced without contaminating the process, and an accurate temperature measurement may be obtained.

The invention discloses a broadband low-profile dielectric patch antenna with anisotropic characteristics. The antenna comprises a lower dielectric substrate, a metal reflection floor, an upper dielectric substrate and a dielectric patch which are sequentially laminated from bottom to top. The lower surface of the lower dielectric substrate is provided with a microstrip feeder line used for coupling feed. A gap is formed on the vertical split surface of the metal reflection floor, and the projection of the microstrip feeder line on the metal reflection floor is perpendicularly intersected withthe gap; the dielectric patch is provided with two pairs of grooves with inner walls printed with metal and symmetrically arranged relative to the center line of the dielectric patch, and the openingdirection of the grooves is perpendicular to the microstrip feeder line. The anisotropic characteristics of a dielectric patch resonator are firstly utilized to improve the gain of the antenna. Moreover, the larger the dielectric constant difference between the dielectric patch and the upper dielectric substrate is, the higher the gain of the antenna is. And then, the multi-mode property of the dielectric patch is fully utilized, and the high-order mode TM121 mode is close to the TM101 mode by introducing a silver coating groove, so that the bandwidth of the antenna is expanded.

The invention relates to a method for preparing compact silver-coated copper powder by using the one-pot method. The silver-coated copper powder is in a coated core-shell structure, a core layer is made of copper, and a shell layer is made of silver. The preparation method includes: adding ammoniacal copper solution prepared by copper sulfate into aqueous solution containing reducing agent and dispersing agent to obtain copper powder suspension; adding water-soluble organic chelating agent into the suspension containing copper powder; adding ammoniacal silver solution prepared by silver nitrate into the suspension containing the copper powder to enable silver ions and the copper powder to be in a displacement reaction; after the displacement reaction finishes, additionally adding a certain amount of weak reducing agent to restore residual silver ions into silver; and filtering, washing and drying to obtain silver-coated copper powder with different grain diameters of 0.8-5 micrometers. The obtained silver-coated copper powder is uniform in silver coating of the shell layer, compact, good in conductivity, high in high-temperature oxidation resistance, and capable of being used for preparation of various electrode slurry sintered in the air.

A penetrator and method of making same are disclosed. The penetrator includes a tungsten ballast and a steel casing having a bore sized to fit the tungsten ballast therein. Copper and silver coatings are provided on mating surfaces of the tungsten ballast and the steel casing. The tungsten ballast is fitted within the bore of the steel casing to form an assembly, and the assembly is pressurized at a pressure and temperature sufficient to form a low temperature solid state diffusion bond between the tungsten ballast and the steel casing. The bond temperature is below the final tempering temperature of the steel casing and the melting temperatures of the silver and copper. This process allows bonds to be produced on steels in their fully heat treated condition.

The invention belongs to chemical silvering technique field, concretely a non-metallic materials surface self-assembly chemical silvering method. The method steps are as follows: using silicane like molecule with amino end as self-assembly decorating layer at the non-metallic material surface; using gold or silver nanometer sol grain as the catalysis center of the chemical plating to quickly form silver coating. The binding force of the silver coating and substrate is strong. The control of the coating depositing speed is easy. The operation is simple; the cost is low; it is fit for large-scale production, and plating silver film at many substrates surface.

An insulating glass (IG) window unit includes first and second substrates, and a low-emissivity (low-E) coating supported by one of the substrates. The low-E coating has two silver based infrared (IR) reflecting layers and allows the IG window unit to realize an increased SHGC to U-value ratio, and an increased thickness ratio of an upper silver based layer of the coating to a bottom silver based layer of the coating. The low-E coating is designed to have a low film-side reflectance, so that for example when the low-E coating is used on surface number three of an IG window unit the IG window unit can realize reduced visible reflectance as viewed from the outside of the building on which the IG window unit is mounted or is to be mounted.

The inventors have conducted vigorous studies, and discovered as a result that it is possible to form a silver layer having a high reflectance of about 90 to 99% in a visible light are a by setting a grain size of an outermost surface of a silver plated layer within a range of 0.5 μm or more to 30 μm or less.

The present invention relates to compositions for forming reflecting layer having organic silver complexes, and method for preparing reflecting layer using the same. More specifically, it relates to compositions for forming reflecting layer including silver complexes that have distinct structures and the method for preparing reflecting layer, where primary coating is applied to promote the adhesive force to materials such as plastic, ceramic, metal, etc. and then a high-reflecting layer is formed by using the silver coating fluid, followed by transparent coating for protection.

The invention relates to an antibacterial non-woven fabric with silver fiber, in which there are fibers. One part of said fiber is silver fiber with silver coating at the surface. The antibacterial non-woven fabric with silver fiber with the structure can make human skin contact silver at the largest area so that the efficacy that the silver resists bacterium and conducts electricity is taken a full play and optimal antibacterial effect is achieved. At the same time the flexility and machinability of fiber itself are not loss. It is provided with good antibacterial efficiency, time standing, no any chemical component, no stimulating for human skin, no toxicity response and the special effect against static electricity. It is also provided with convenient usage, saving stock, low cost and is applied in daily life widely, especially medical health, family decoration and other aspects. It is the good stock for female health products, one-time health products, medical products, household bedspread and filtering material. It brings great advantage for human life and work..

The present invention provides silver nano-particles that are excellent in stability and develop excellent conductivity by low-temperature calcining, a producing method for same, and a silver coating composition comprising the silver nano-particles. A method for producing silver nano-particles comprising: preparing an amine mixture liquid comprising: an aliphatic hydrocarbon monoamine (A) comprising an aliphatic hydrocarbon group and one amino group, said aliphatic hydrocarbon group having 6 or more carbon atoms in total; and an aliphatic hydrocarbon monoamine (B) comprising an aliphatic hydrocarbon group and one amino group, said aliphatic hydrocarbon group having 5 or less carbon atoms in total, in a ratio wherein the amine (A) is 5 mol % or more and less than 20 mol % and the amine (B) is more than 80 mol % and 95 mol % or less, based on a total of the amine (A) and the amine (B); mixing a silver compound and the amine mixture liquid to form a complex compound comprising the silver compound and the amines; and thermally decomposing the complex compound by heating to form silver nano-particles.

An electrically conductive fiber and a coupled biomedical sensor are described. An electrically conductive core of the fiber includes a multiplicity of synthetic conductive filaments and an outer nonconductive fiber layer. The sensor area of the electrically conductive fiber is coated by thin film of silver ink and thin film of silver-silver chloride ink. The electrically conductive fiber's porous surface contacts the thin silver ink coating and the silver coating contacts the silver-chloride ink coating. A surface of the biomedical sensor is coated by a thick film of ionically conductive media, containing an electrolyte, in contact with the silver-chloride coating. The electrolyte diffuses into a porous structure of electrically conductive yarn.

The related composite poly-soap self-repair bearing lubricating grease comprises the basic liquid, composite calcium sulfonate, composite Ca-Li-base thickener, non-oxidizing anti-corrosion additive, metal deactivator, tungsten disulfide extreme pressure additive, wear-well additive, self-repair additive, and structural modifier; has well anti-oxidation ability and bearing capacity, can repair wore part on condition of extreme pressure and high temperature to supply the silver-plating lacking on bearing radial surface effectively, prolongs bearing service time on maximum limit, and has special application in oil drilling exploration.

The invention discloses a chemical silver-plating method of fiber, which comprises the following steps: 1. deoiling fiber; coarsing; sensitizing; 2. plating silver; 3. supplementing silver-plating solution to adjust and use again.

The present invention relates to preparation process of composite Cu-Ag metal powder in core-shell structure. Cu powder is pre-plated in a direct plating process for Ag to crystallize and grow in the surface of Cu well, and through twice chemical reactions in glucose bath and twice densifying treatments, micron level Cu powder is clad with a complete compact Ag layer with greatly reduced gaps. The Ag plated Cu powder has improved high temperature oxidation resistance in the temperature up to 790 deg.c, and high binding strength between the Cu core and the Ag shell.

The invention relates to sheet/branch silver-coated copper powder, a green halogen-free low-silver-content economical electrically conductive adhesive capable of replacing traditional electrically conductive adhesives with high silver contents, and a preparing method of the electrically conductive adhesive. The morphology of the sheet/branch silver-coated copper powder is in a sheet shape and/or a branch shape. The silver coating area rate on the surface of copper powder is 90-95%. The content of a zinc-aluminum alloy in the silver-coated copper powder is lower than 15 wt%. The electrically conductive adhesive comprises following raw materials by weight: 60-90% of the sheet/branch silver-coated copper powder, 0-30% of micron order silver power, 6-12% of epoxy resin, 1-8% of an active diluting agent, 1-6% of toughening resin, 1-3% of a curing agent, 0-1% of a curing promoter and 0.5-2% of a coupling agent. The sheet/branch silver-coated copper powder is high in silver coating rate on the surface of Cu and excellent in electrically conductive performance, so that the electrically conductive adhesive prepared from the sheet/branch silver-coated copper powder is excellent in performance, low in cost and good in intrinsic conductivity.