Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

12680 results about "Magnesium alloy" patented technology

Magnesium alloys are mixtures of magnesium with other metals (called an alloy), often aluminum, zinc, manganese, silicon, copper, rare earths and zirconium. Magnesium is the lightest structural metal. Magnesium alloys have a hexagonal lattice structure, which affects the fundamental properties of these alloys. Plastic deformation of the hexagonal lattice is more complicated than in cubic latticed metals like aluminium, copper and steel; therefore, magnesium alloys are typically used as cast alloys, but research of wrought alloys has been more extensive since 2003. Cast magnesium alloys are used for many components of modern automobiles and have been used in some high-performance vehicles; die-cast magnesium is also used for camera bodies and components in lenses.

Selective laser melting forming device and method of medical magnesium alloy metal part

ActiveCN101856724ASatisfies complex spatial shape requirements with high degrees of freedomMeet complex space shape requirementsSelective laser meltingOptoelectronics
The invention provides a selective laser melting forming device of a medical magnesium alloy metal part, which comprises a control device, a powder delivering and spreading device, a laser transmission mechanism, an air purification device and a closed forming chamber, wherein the powder delivering and spreading device comprises a hopper and powder spreading brushes arranged on two sides below the hopper, the upper part of the hopper is arranged in a way of corresponding to a feeding opening on the upper part of the forming chamber, and the lower parts of the powder spreading brushes horizontally correspond to the upper surface of a forming cylinder; the laser transmission mechanism is arranged outside and above the forming chamber and is arranged in a way of corresponding to the forming cylinder; the side wall of the forming chamber is provided with an air inlet and an air outlet, and the air purification device is connected with the air inlet and the air outlet respectively; and the control device is connected with the powder delivering and spreading device, the laser transmission mechanism, the forming cylinder and the air purification device respectively. The invention also provides a selective laser melting forming method of the medical magnesium alloy metal part. The device and the method can manufacture parts which have complex shapes required in the medical field directly, and have the advantages of high forming efficiency and the like.
Owner:SOUTH CHINA UNIV OF TECH

Controlled degradation magnesium alloy coating bracket and preparation thereof

InactiveCN101214396AImprove mechanical propertiesExcellent pharmacological propertiesAnodisationStentsSurface cleaningPolymer chemistry
The invention relates to a controlled degradation magnesium alloy coating stent and a preparation method. The stent body is made of medical high purity magnesium or magnesium alloy by mechanical processing or laser carving; the stent body is provided with a drug-loading coating which bears curative drug; the surface of the stent body is provided with an anti-corrosive coating; the surface of the anti-corrosive coating is provided with a degradable polymer film drug-loading coating; the preparation method includes surface cleaning, preparation of the degradable polymer film drug-loading coating, and application of curative drug; through (1)surface cleaning, (2)preparation of the degradable polymer film drug-loading coating, and (3)application of curative drug, an oxide film is formed on the surface; different drugs and dosage can be fixed by regulating the molecular weight and the thickness of the polymer layer, the drug-loading quantity is more than 30 percent, which improves the fixed stability of the drug, greatly reduces the degradation speed of the magnesium alloy and controls release of the drug, delays corrosion of the magnesium alloy, extends the service life of the stent, is safe in use, and meets the clinical requirement.
Owner:LEPU MEDICAL TECH (BEIJING) CO LTD

Rare earth-containing high strength heat resisting magnesium alloy and preparation thereof

The invention relates to a high strength heat-resistant magnesium alloy containing rare earths of the technical field of metallic materials and a preparation method thereof. The magnesium alloy comprises the following components according to the mass percent: Y with more than or equal to 3% and less than or equal to 16%, Gd with more than or equal to 0% and less than or equal to 10%, Ca with more than or equal to 0.3% and less than or equal to 5%, Zr with more than or equal to 0.1% and less than or equal to 1.5%, and one or a plurality of Nd, Si, Sb, Ti, Sn, Sr, Bi, Cd, Nd with more than or equal to 0% and less than or equal to 5%, Si with more than or equal to 0% and less than or equal to 5%, Sb with more than or equal to 0% and less than or equal to 5%, Ti with more than or equal to 0% and less than or equal to 5%, Sn with more than or equal to 0% and less than or equal to 5%, Sr with more than or equal to 0% and less than or equal to 5%, Bi with more than or equal to 0% and less than or equal to 5%, Cd with with more than or equal to 0% and less than or equal to 5%, and the rest is Mg and impurities. The magnesium alloy is obtained by using melting and the subsequent heat treatment. The magnesium alloy not only can serve as casting magnesium alloy but also can serve as the deformation magnesium alloy and has better predominant mechanical property compared with the WE series commercial magnesium alloy.
Owner:SHANGHAI JIAO TONG UNIV

Wear-resisting alloy steel with high boron, high chrome and low carbon and preparation method thereof

The invention discloses a wear-resisting alloy steel with high boron, high chrome and low carbon and a preparation method thereof, which comprises the following chemical constituents in weight percent: 0.1-0.5% of C, 3-26% of Cr, 0.5-1.2% of Si, 0.5-1.5% of Mn, 0.3-2.8% of B, 0.3-2.6% of Cu, 0.2-0.6% of Ti, 0.02-0.15% of Ca, 0.03-0.25% of Ce, 0.02-0.18% of N, 0.05-0.3% of Nb, 0.04-0.09% of Al, 0.02-0.15% of Mg, 0.04-0.13% of K, less than 0.03% of S, less than 0.04% of P and the balance Fe and unavoidable impurity elements. The method comprises the following steps: melting steel scrap and chromium iron in an electric furnace; adding copper plates, ferrosilicon, ferromanganese into the melted steel scrap and chromium iron, heating the melt to 1560-1620 DEG C after the constituents are adjusted to be qualified in stokehold; adding calcium-silicon alloy and aluminium deoxidation into the melt; and then adding ferrotitanium and ferroboron in sequence, melting and discharging; roasting the compound inoculant composed of granular rare earth magnesium alloy with the diameter being less than 12mm and cerium metal, Si3N4, VN, Nb and K; placing the roasted compound inoculant at the bottom ofa steel ladle; carrying out modification and inoculation processes on the smelted liquid steel by pour-over method in the steel ladle, wherein, the pouring temperature of the liquid steel is 1400-1450DEG C; heating castings to 920-1150 DEG C and preserving heat for 2-4 hours; and air cooling the castings to room temperature to obtain the alloy steel in the invention. The alloy steel of the invention has the advantages of high strength, rigidity and toughness, good thermal fatigue resistance property, wear resistance, and low manufacture cost.
Owner:泰州海天机械配件有限公司

Magnesium alloy and preparation method thereof

The invention discloses a magnesium alloy and a method for preparing the same. The weight percentage compositions of the magnesium alloy as follows: 7 to11 percent by weight of Gd, 2 to 5 percent by weight of Y, 0.3 to 0.6 percent by weight of Zr, 0 to 1.0 percent by weight of Zn, the balance Mg and incidental impurity elements. The method for preparing the alloy comprises alloy melting, refining, casting, solid solution, extrusion deformation and two artificial aging methods, to produce heat resistant magnesium alloy extruded bar with high strength and high toughness. The tensile properties of the magnesium alloy at room temperature manufactured by adopting direct artificial aging is: tensile strength sigma b is between 450 and 480 MPa, sigma 0.2 is between 390 and 425 MPa, delta 5 is between 3 and 5 percent; when test specimen is heated to 250 DEG C for 10 min, the tensile strength sigma b is more than or equal to 300 MPa. The tensile properties of the magnesium alloy at room temperature manufactured by adopting dual artificial aging is: tensile strength sigma b is between 380 and 395 MPa, sigma 0.2 is between 280 and 290 MPa, delta 5 is between 15 and 21 percent; when test specimen is heated to 250 DEG C for 10 min, the tensile strength sigma b is more than or equal to 260 MPa. The invention produces the heat resistant magnesium alloy of high strength and high toughness with the density of no more than 1.93g/cm3, which can satisfy the demands of density, strength and toughness, and heat resistance of metal materials in specific fields.
Owner:GRIMAT ENG INST CO LTD

Hydrophilic nano zinc based composite coating

The invention belongs to the technical field of chemical engineering coatings and particularly relates to a hydrophilic nano zinc based composite coating used for preventing corrosion on the surfaces of the metal parts. The coating comprises an emulsifier, a dispersant, an antifoaming agent, scaly metallic powder, nano oxides, a silane coupler, an alcohol-type solvent, a high-molecule organic material, a thickener and 30.0 to 60.0 percent of water serving as a disperse medium. The coating can be coated by spraying, brushing, soaking and soaking-centrifugal coating and other methods, and the coating can be formed by being roasted at a temperature of about 200 DEG C for 20 minutes. Neutral salt spray corrosion resistant tests show that the neutral salt spray corrosion resistant time is more than 800h, the binding force is proved to be above level 4 (by an adhesive band test). The coating has the advantages of environmental pollution prevention, excellent metallic corrosion resistant property, economy and practicability and convenient use; and moreover, the coating can be widely used for the corrosion resistant treatment of the surface of metal parts made of iron, aluminum, copper and magnesium alloy and the like, particularly the corrosion resistant treatment of metal parts with complex geometric shapes.
Owner:YUNNAN GREAT IND DEV

Light and pressure-proof fast-decomposed cast magnesium alloy

The invention discloses light and pressure-proof fast-decomposed cast magnesium alloy which can be used as a tripping ball material for a multi-stage sliding sleeve staged-fracturing technique. The light and pressure-proof fast-decomposed cast magnesium alloy is prepared from the following components: 13-25% of Al, 2-15% of Zn, 0.1-5% of Fe, 0.05-5% of Cu, 0.05-5% of Ni, 0-5% of Ag, 0.05-0.5% of Zr, 0.05-0.5% of Ti, and the balance of Mg. The preparation method comprises the following steps of: weighing the components according to the designed component ratio of the magnesium alloy; firstly, putting pure magnesium and pure aluminum into a smelting furnace, putting pure zinc and intermediate alloy of other components into magnesium-aluminum alloy melt after melting; refining, degassing, and stewing after warming to melt; then casting in a protective atmosphere. The light and pressure-proof fast-decomposed cast magnesium alloy is reasonable in component ratio, and simple in craft process; the light and pressure-proof fast-decomposed cast magnesium alloy can be obtained by controlling the ingredients of the alloy; the alloy decomposition performance exceeds that of the traditional cast magnesium alloy; the demands of the multi-stage sliding sleeve staged-fracturing technique on the decomposition performance of the tripping ball material can be met; industrialized application can be achieved; application of the magnesium alloy in the field of exploitation of petroleum and gas is expanded.
Owner:中山市宏镁科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products