490 results about "Metal" patented technology

A process for the selective and controlled reduction of permeability to water in oil-bearing formations made up of sandstone or limestone, the process comprising the injection of a slug of polymer aqueous solutions having a polarity opposite to the polarity of the rock, followed by the injection of a spacing slug of alkaline halide and then a fresh slug of polymer aqueous solution, the polarity of which is opposite to the polarity of the first polymer slug, and then a slug of aqueous solution of trivalent metal crosslinking agent to effect the partial crosslinking of the polymer charges, the polymer layers being successively added until the injection pressure of the polymer aqueous solutions show that the desired Residual Resistance Factor RRF was attained, and well production may be resumed.

Belonging to the technical field of batteries, the invention relates to a non-aqueous solution aluminum ion secondary battery and a preparation method thereof. The secondary battery can be widely applied in electronics, communication, electric vehicle and other fields. The aluminum ion battery provided by the invention contains a battery anode, a battery cathode, a diaphragm and an aluminum-containing non-aqueous solution electrolyte. Specifically, the cathode active material can be carbon, graphite, carbon nanotube, graphene, super carbon, WS2 and MoS2, V2O5, TiO2 and other materials having nano-layered, tubular, linear and other structures, and the anode is aluminum-containing metal or alloy. The non-aqueous solution aluminum ion secondary battery provided by the invention has the characteristics of high specific capacity, high coulomb efficiency, long service life and environmental protection, safety and reliability, stable cycle performance, and quick charging, etc.

The invention relates to a water-based airplane surface cleaning agent, which is prepared by uniformly mixing the following components in percentage by weight: 21 to 30 percent of degradable surfactant, 5 to 7 percent of metal corrosion inhibitor, 0.3 to 2 percent of pH regulating agent, 1.7 to 5 percent of stabilizer, and the balance of deionized water. A preparation method comprises the following steps: (1) weighing the pH regulating agent, the degradable surfactant, the metal corrosion inhibitor, the stabilizer and the deionized water according to the ratio of weight percent; (2) adding the pH regulating agent, the metal corrosion inhibitor, the degradable surfactant and the stabilizer into the deionized water at the room temperature of between 23 and 25 DEG C; and (3) stirring the liquid at constant speed of 60 to 80r / min for 20 to 40 minutes to ensure that no bubble is generated in the liquid to prepare the cleaning agent after uniform mixing. The invention has scientific and reasonable formula and simple process without special equipment, and the cleaning agent has the advantages of strong cleaning capability, short cleaning time, low cost, high efficiency and is safe and reliable for use.

The invention discloses a green total organic carbon steel scale and corrosion inhibitor for a circulating cooling water system, which comprises a scale inhibitor and a corrosion inhibitor, wherein the scale inhibitor comprises one or more of hydrolyzed polymaleic anhydride, polyacrylic acid, polymethacrylic acid, acrylic acid / hydroxypropyl acrylate copolymer, acrylic acid / hydroxypropyl acrylate / methyl acrylate terpolymer and acrylic acid / 2-acrylamido-2-methylpropane sulfonic acid copolymer; and the corrosion inhibitor comprises oxalic acid or oxalate, alpha-hydroxycarboxylic acid or salt thereof and silicate. The scale and corrosion inhibitor has excellent scale inhibition and corrosion inhibition performance, and belongs to a completely phosphorus-free metal-free environment-friendly total organic composition. Discharged waste water treated by the composition can not cause eutrophication pollution to the environment.

A mirror process uses a tungsten passivation layer to prevent metal-spiking induced mirror bridging and improve mirror curvature. A mirror structure is patterned on a first sacrificial layer overlying a substrate. A tungsten passivation layer is then blanket deposited to cover the top and sidewalls of the mirror structure. A second sacrificial layer is formed overlying the tungsten passivation layer. A releasing process with an etchant including XeF2 is performed to remove the second sacrificial layer, the tungsten passivation layer and the first sacrificial layer simultaneously.

The invention relates to a mineral separation method for recycling iron, rare earth, fluorite and niobium from iron tailings of associated multi-metal minerals, and belongs to the fields of mineral process engineering and comprehensive recycling of resources. The mineral separation method for recycling iron, rare earth, fluorite and niobium from iron tailings of associated multi-metal minerals comprises the following steps: carrying out low intensity magnetic separation and high intensity magnetic separation pre-concentration by taking bayan obo tailings as raw materials, then carrying out fluid bed roasting on obtained pre-concentrated concentrates, and carrying out low intensity magnetic separation operation on roasted minerals obtained by roasting so as to obtain weak-magnetism concentrates and rare-earth-containing weak-magnetism tailings; and carrying out rare earth flotation operation on the weak-magnetism tailings to obtain rare earth flotation concentrates and rare earth flotation tailings finally, then carrying out acid leaching process on the rare earth flotation tailings to obtain niobium-enriched slag and acid pickling tailings, and meanwhile, carrying out fluorite flotation operation on pre-concentrated strong-magnetism tailings to obtain fluorite flotation concentrates and fluorite flotation tailings. By the method, fluorite concentrates, iron core concentrates, rare earth concentrates and the niobium-enriched slag are obtained finally, and thus, the bayan obo tailings are utilized comprehensively.

A process for metalizing a ceramic surface or attaching a ceramic to a metal is provided. The process may comprise: immersing the ceramic into an aluminum or aluminum alloy melt, making the ceramic move or stay still relative to the melt to adhere the melt to the ceramic; and then removing the ceramic from the melt to unaffectedly cool the film adhered thereto. The process can attach an aluminum or aluminum alloy thin film having a thickness of several to tens of micrometers on a ceramic surface. The thin film is formed by solidification, and does not have microscopic faults such as oxide film inclusions or pores, therefore having proper physical of mechanical properties of aluminum. Ceramics or a ceramic and a metal can be brazed via the surface metalizing film, the bonding strength of their interface can over the strength of aluminum itself.This invention discloses a process for metalizing the surface of a ceramic and a process for attaching a ceramic to a metal. A process for attaching an aluminum or aluminum alloy thin film to a ceramic surface comprises the steps of: immersing a ceramic surface to be metalized into a aluminum or aluminum alloy melt, and making the ceramic move or stay still relative to the melt to adhere the melt of the aluminum or aluminum alloy to the metalizing surface of the ceramic; and then removing the metalizing surface of the ceramic from the melt to unaffectedly cool the aluminum or aluminum alloy liquid film adhered thereto to obtain a ceramic having the aluminum or aluminum alloy thin film attached to the surface. The process to attaching aluminum or aluminum alloy thin film on the surface of a ceramic of the present invention can attach an aluminum or aluminum alloy thin film having a thickness of several micrometers to tens of micrometers on the surface of a ceramic. The thin film is formed by the solidification of the aluminum of aluminum alloy liquid film attached on the surface of a ceramic, and it does not have the microscopic faults such as oxide film inclusions or pores, therefore having the proper physical of mechanical properties of aluminum. Ceramics or a ceramic and a metal can be brazed via the surface metalizing film, the bonding strength of their interface can over the strength of aluminum itself.

A rapid repair method for the existing expansion joints of railway concrete bridges, comprising the following steps: a, removing residual water-stop rubber strips; b, removing dirt and garbage on the concrete base surface and the exposed surface of metal edge beams, and then Drying; c, installing and positioning the underlayment and side lining; d, spraying the primer; e, pouring the repair material; f, spraying the top coat; g, after the repair material is basically cured, the repair is completed. The repair method of the invention can adapt to various irregular sizes of bridge joints; installation and replacement are fast and convenient; the polyurethane repair material itself has good durability and weather resistance, and is suitable for rapid repair; the price is moderate, and it is convenient for mass use.

The invention discloses a high-entropy interlayer alloy, which comprises the following components in atomic percentage: 5-10% of Ti, 5-10% of Fe, 25-30% of Al, 15-20% of Ni, 30-35% of Cu and 5-10% of Cr. The invention also discloses a method for welding TA2 / 0Cr18Ni9Ti by the high-entropy effect, which comprises the following steps that: high-entropy interlayer alloy is placed between the two plates to be welded, the high-entropy interlayer alloy is in a foil folding structure, and the high-entropy interlayer alloy and local parent metal are subjected to heat fusing by an interface resistor ina resistance spot welding mode, so that the high performance welding of TA2 / 0Cr18Ni9Ti can be realized. According to the method and the high-entropy interlayer alloy of the method, which are disclosed by the invention, the high-entropy interlayer alloy has the advantages of favorable strength, toughness and corrosion resistance, is easy to process and form and is convenient to weld and assembly. The preparation method has the advantages of simple step and low manufacture cost and is convenient to popularize.