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35results about How to "Difficult to prepare" patented technology

Foamed aluminium and aluminum alloy tackifying foaming preparation method

The viscosity increasing and foaming process for preparing foamed aluminum or aluminum alloy includes the following steps: compounding water solution of sulfate or fluoride salt; adding carbonate powder via stirring, stoving and powdering the mixture; mixing carbonate powder and titanium hydride powder; heating aluminum or aluminum alloy to melt; adding carbonate powder or compound foaming agent powder via stirring; maintaining in the furnace; and fast water cooling to solidify after growing to reach the required size. The process can form spherical pores in the foamed aluminum or aluminum alloy.
Owner:SOUTHEAST UNIV

Electrode structure of lithium sulfur battery and processing technology therefor

The invention discloses an electrode structure of a lithium sulfur battery and a processing technology therefor. The electrode structure comprises a sulfur-containing active substance layer and a current collector; the upper surface of the active substance layer is coated with a first carbon coating layer; the lower surface of the active substance layer is coated with a second carbon coating layer; and the second carbon coating layer is positioned between the active substance layer and the current collector. The electrode structure has the main characteristics that the two sides of the sulfur-containing active substance layer are coated with the carbon coating layers; namely, the surface of the active substance layer, and the space between the active substance layer and the current collector are coated with the carbon coating layers, wherein a carbon material is taken as the main component, and the carbon material with a large specific surface area or low bulk density is preferable; the carbon material with the relatively large specific surface area can absorb polysulfide and restrain a shuttle effect; meanwhile, the carbon material with the low bulk density can form the relatively loosen carbon coating layer so as to store a large amount of electrolyte in the carbon coating layer, and the dissolution of sulfur and the polysulfide is facilitated, a positive electrode reaction is promoted, and the increase of electrolyte viscosity caused by resolution is restrained.
Owner:CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST

Method for manufacturing composite double-metal fracture splitting connecting rod

InactiveUS20150053363A1Ensures performanceSimplify connection procedureConnecting rodsShaftsMetalMaterials science
The present invention provides a method for manufacturing a composite double-metal fracture splitting connecting rod, comprising the steps of: providing a moveable spacer at a large end of a mold cavity of a connecting rod, to divide the mold cavity into two separate parts; casting a connecting rod body and a connecting rod cap with material for the main body of the connecting rod; removing the spacer from the mold cavity when the majority of the material is solidified, then injecting material for a fracture splitting region into an empty mold cavity obtained after the removal of the spacer, and metallurgically bonding the two types of material to form a composite double-metal casting; then, separating the connecting rod body from the connecting rod cap by a fracture splitting apparatus along preset fracture surfaces; and positioning and accurately assembling through engaged staggered structures on the two fracture surfaces.
Owner:JIANGSU UNIV

Near-infrared light emitting microcrystalline glass with embedded Er:YAG microcrystalline phase and preparation method of microcrystalline glass

InactiveCN108439807ARaw material composition is simpleHigh fluorescence efficiencyNear infrared lightX ray irradiation
The invention provides near-infrared light emitting microcrystalline glass with an embedded Er:YAG microcrystalline phase and a preparation method of the microcrystalline glass. A microcrystalline phase substance is YAG, active ions are Er <3+> and uniformly doped into YAG microcrystalline phases, the microcrystalline phases are uniformly distributed in the microcrystalline glass, cationic mole percentage of the near-infrared light emitting microcrystalline glass includes, 13-34.9% of Y<3+>, 65-77% of Al<3+> and 0.1-10% of Er<3+>, and the sum of the mole percentage of the active ions Er<3+> and Y<3+> is 23-35%. Er:YAG microcrystalline separated out from the Er:YAG microcrystalline glass is small and uniform in size, so that the prepared microcrystalline glass has the advantages of high transparency and heat conductivity, resistance to deliquescence and x-ray irradiation, excellent optical performance and the like, and the microcrystalline glass can be applied to the fields of optical amplifiers, lasers and the like.
Owner:WUHAN UNIV OF TECH
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