2778 results about "Alloy composition" patented technology

The invention discloses a high strength casting aluminum alloy material. The alloy comprises the following compositions in weight percent: 2.0 to 6.0 percent of Cu, 0.05 to 1.0 percent of Mn, 0.01 to 0.5 percent of Ti, 0.01 to 0.2 percent of Cr, 0.01 to 0.4 percent of Cd, 0.01 to 0.25 percent of Zr, 0.005 to 0.04 percent of B, 0.05 to 0.3 percent of Pr, the balance being Al and trace impurity elements. The invention adopts the advanced alloy composition design and the micro alloying design. Based on taking Al-Cu-Mn as main compositions, the material finds reasonable micro alloy elements (Ti, Cr, B, Zr and rare earth, etc.), determines the ranges of compositions of the micro alloy elements, is capable of realizing the function of replacing precious and rare metals such as Ag and V, etc., and lowers the formula cost by 5 to 10 percent.

An alloy having a large band gap range is used in a multijunction solar cell to enhance utilization of the solar energy spectrum. In one embodiment, the alloy is In_1−xGa_xN having an energy bandgap range of approximately 0.7 eV to 3.4 eV, providing a good match to the solar energy spectrum. Multiple junctions having different bandgaps are stacked to form a solar cell. Each junction may have different bandgaps (realized by varying the alloy composition), and therefore be responsive to different parts of the spectrum. The junctions are stacked in such a manner that some bands of light pass through upper junctions to lower junctions that are responsive to such bands.

Disclosed are nanocrystals comprising metals and metal alloys, which are formed by a process that results in a layer of graphite in direct contact with the metallic core. The nanocrystals may be used in vivo as MRI contrast agents, X-ray contrast agents, near IR (NIR) heating agents, drug delivery, protein separation, catalysis etc. The nanocrystals may be further functionalized with a hydrophilic coating, e.g., phospholipid-polyethylene glycol, which improves in vivo stability. The process comprises chemical vapor deposition of metals adsorbed onto silica as a fine powder, in conjunction with a carbon containing gas, which coats the metal particles. The silica is then etched away. Preferred metals include iron, gold, cobalt, platinum, ruthenium and mixtures thereof, e.g., FeCo and AuFe. The process permits control of the alloy compositions, size, and other characteristics.

An optoelectronic device including two spaced apart electrodes; and at least one layer containing ternary core/shell nanocrystals disposed between the spaced electrodes and having ternary semiconductor cores containing a gradient in alloy composition and wherein the ternary core/shell nanocrystals exhibit single molecule non-blinking behavior characterized by on times greater than one minute or radiative lifetimes less than 10 ns.

The invention belongs to the field of titanium-based alloys, and particularly relates to a novel heat-resisting titanium alloy and a processing and manufacturing method and application thereof. The processing and manufacturing method comprises the composition elements of alloy components, smelting, heat processing, heat treatment and the like, wherein the alloy components are as follows (in percentage by weight): 5.4%-6.3% of Al, 3.0%-5.0% of Sn, 2.5%-6.4% of Zr, 0.0%-0.96% of Mo, 0.25%-0.5% of Si, 0.2%-0.5% of Nb, 0.3%-3.4% of Ta, 0.2%-1.6% of W, 0.0%-0.07% of C, less than or equal to 0.17% of O, less than or equal to 0.03% of Fe and the balance of Ti and inevitable impurity elements. The novel heat-resisting titanium alloy disclosed by the invention can obtain different matching of tensile strength, plasticity, permanence, creep strength and heat stability through the combination of different heat processing process and heat treatment processes, can be used for manufacturing parts, namely blades, coil assemblies and the like which are positioned on the high-temperature parts of an advanced aircraft engine, is used for a long time within a range of 600-650 DEG C, can also be used for manufacturing high temperature-resistant structural members, namely aerospace craft skin and the like, is used for a short time at about 700 DEG C and can be used as a material and the like used for high temperature-resistant corrosion-resistant valves of an automobile and a boiler.

To provide an amorphous soft magnetic alloy having a supercooled liquid region and excellent in amorphous-forming ability and soft magnetic properties, by selecting and optimizing an alloy composition, and to further provide a ribbon, a powder, a high-frequency magnetic core, and a bulk member each using such an amorphous soft magnetic alloy. The amorphous soft magnetic alloy has a composition expressed by a formula of (Fe_1-αTM_α)_100-w-x-y-zP_wB_xL_ySi_z, wherein unavoidable impurities are contained, TM is at least one selected from Co and Ni, L is at least one selected from the group consisting of Al, V, Cr, Y, Zr, Mo, Nb, Ta, and W, 0≦α0.98, 2≦w≦16 at %, 2≦x≦16 at %, 0<y≦10 at %, and 0≦z≦8 at %).

A superlattice-based infrared absorber and the matching electron-blocking and hole-blocking unipolar barriers, absorbers and barriers with graded band gaps, high-performance infrared detectors, and methods of manufacturing such devices are provided herein. The infrared absorber material is made from a superlattice (periodic structure) where each period consists of two or more layers of InAs, InSb, InSbAs, or InGaAs. The layer widths and alloy compositions are chosen to yield the desired energy band gap, absorption strength, and strain balance for the particular application. Furthermore, the periodicity of the superlattice can be “chirped” (varied) to create a material with a graded or varying energy band gap. The superlattice based barrier infrared detectors described and demonstrated herein have spectral ranges covering the entire 3-5 micron atmospheric transmission window, excellent dark current characteristics operating at least 150K, high yield, and have the potential for high-operability, high-uniformity focal plane arrays.

Alloy steels that combine high strength and toughness with high corrosion resistance are achieved by a dislocated lath microstructure, in which dislocated martensite laths that are substantially free of twinning alternate with thin films of retained austenite, with an absence of autotempered carbides, nitrides and carbonitrides in both the dislocated martensite laths and the retained austenite films. This microstructure is achieved by selecting an alloy composition whose martensite start temperature is 350° C. or greater, and by selecting a cooling regime from the austenite phase through the martensite transition region that avoids regions in which autotempering occurs.

The invention presented herein relates to a niobium-containing zirconium alloy for use in nuclear fuel cladding. The Zr alloy of this invention with superior corrosion resistance is characterized as comprising an alloy composition as follows:1) niobium (Nb), in a range of 0.8 to 1.2 wt. %; one or more elements selected from the group consisting of iron (Fe), molybdenum (Mo), copper (Cu) and manganese (Mn), in a range of 0.1 to 0.3 wt. %, respectively; oxygen (O), in a range of 600 to 1400 ppm; silicon (Si), in a range of 80 to 120 ppm; and the balance being of Zr,2) Nb, in a range of 1.3 to 1.8 wt. %; tin (Sn), in a range of 0.2 to 0.5 wt. %; one element selected from the group consisting of Fe, Mo, Cu and Mn, in a range of 0.1 to 0.3 wt. %; O, in a range of 600 to 1400 ppm; Si, in a range of 80 to 120 ppm; and the balance being of Zr,3) Nb, in a range of 1.3 to 1.8 wt. %; Sn, in a range of 0.2 to 0.5 wt. %; Fe, in a range of 0.1 to 0.3 wt. %; one element selected from the group consisting of chromium (Cr), Mo, Cu and Mn, in a range of 0.1 to 0.3 wt. %; O, in a range of 600 to 1400 ppm; Si, in a range of 80 to 120 ppm; and the balance being of Zr, and4) Nb, in a range of 0.3 to 1.2 wt. %; Sn, in a range of 0.4 to 1.2 wt. %; Fe, in a range of 0.1 to 0.5 wt. %; one element selected from the group consisting of Mo, Cu and Mn, in a range of 0.1 to 0.3 wt. %; O, in a range of 600 to 1400 ppm; Si, in a range of 80 to 120 ppm; and the balance being of Zr.

The present invention relates generally to forming a threaded neck in a metal bottle manufactured by a process known as impact extrusion. More specifically, the present invention relates to methods, apparatus and alloy compositions used in the impact extrusion manufacturing of containers and other articles with sufficient strength characteristics to allow threading the container necks to receive a threaded closure on the threaded neck.

An alloy composition for a subcell of a solar cell is provided that has a bandgap of at least 0.9 eV, namely, Ga_1-xIn_xN_yAs_1-y-zSb_z with a low antimony (Sb) content and with enhanced indium (In) content and enhanced nitrogen (N) content, achieving substantial lattice matching to GaAs and Ge substrates and providing both high short circuit currents and high open circuit voltages in GaInNAsSb subcells for multijunction solar cells. The composition ranges for Ga_1-xIn_xN_yAs_1-y-zSb_z are 0.07≦x≦0.18, 0.025≦y≦0.04 and 0.001≦z≦0.03.

The invention relates to high-temperature alloy technology, and in particular provides an isometrical cast nickel-base high-temperature alloy with low density, high incipient melting temperature and good casting property and a preparation process thereof, which can be used for floating tile materials of a combustion chamber. The alloy comprises the following compositions by mass percentage: 0.03 to 0.06 percent of C, 5 to 12 percent of Cr, 5.5 to 6.5 percent of Al, 3 to 8 percent of Co, 3 to 7 percent of W, 2 to 4 percent of Mo, 1.6 to 3.2 percent of Nb, 0.01 to 0.03 percent of B, 0.008 to 0.025 percent of Y and the balance of Ni. A vacuum induction furnace is adopted to smelt a master alloy, and a smelting crucible is a CaO crucible or a MgO crucible; and the operation process comprises the following steps: putting alloying elements such as carbon, chromium, cobalt, tungsten, molybdenum and niobium in proportion and a nickel plate into the crucible; melting the alloy when the vacuum degree reaches between 50 and 0.1 Pa; and after completion of the melting, refining for 30 to 300 seconds at a temperature of between 1,550 and 1,600 DEG C, cutting off electricity, forming a film, breaking the film to add Al and Al-Y and Ni-B interalloy for uniform stirring, and casting a master alloy pig at a temperature of between 1,450 and 1,500 DEG C. The invention solves the problems of low incipient melting temperature, poor plasticity and inoxidability and the like of the nickel-base high-temperature alloy.

The invention discloses a rare earth aluminum alloy, and a method and a device for preparing the same. The alloy contains at least one rare earth metal of lanthanum, cerium, praseodymium, neodymium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, lutetium, scandium and yttrium, the content of raw earth is 5 to 98 weight percent, and the balance is aluminum and inevitable impurities. The device for preparing the rare earth aluminum alloy is characterized in that: a) graphite serves as an electrolysis bath, a graphite plate is an anode, a tungsten bar is a cathode and a molybdenum crucible serves as a rare earth aluminum alloy receiver; b) the diameter of the tungsten bar is 30 to 55 mm; and c) the anode of the graphite consists of a plurality of graphite plates. The rare earth aluminum alloy, and the method and the device for preparing the same have the advantages that: the alloy has uniform components, little segregation and low impurity content; technology for preparing the rare earth aluminum alloy through fusion electrolysis can maximally replace a process for preparing single medium-heavy metal through metallothermic reduction, greatly reduce energy consumption and the emission of fluorine-containing tail gas and solid waste residue, improve current efficiency and metal yield and reduce the consumption of auxiliary materials and the energy consumption; and the rare earth aluminum alloys with different rare earth contents can be obtained by controlling different electrolytic temperatures and different cathode current densities.

The invention opened a high strength and high extensibility 6063 Al alloy which contain the Cu, Mn, chrome, Fe, Zn, Ti, Al. The process is: a, founding: adding the material to the furnace melting stir ring and skimming coving refining skimming and refining thermal retardation casting ingot. b extruding and heat processing: isotroping air cooling, heating extruding quenching cutting cooling stretching straightening aging treatment product. The process has improved the mechanics of the alloy, also the elongation percentage (60%) and the intensity (40%). The tensile strength has been improved to 280-300 MPa, the elongation percentage is improved to 13%. So it satisfy the windows and the curtain wall's need.

The invention discloses an Al-Mg-Sc-Zr series aluminum alloy composition for selective laser melting technology and a preparation method for a molding part. The composition comprises, by mass, 6-15% of Mg, 0.5-4% of Sc, 0.7-3% of Zr, 0.5-2% of Mn and the balance aluminum. An aluminum alloy molding part are prepared by smelting of master alloy, preparation of metal powder, preparation of aluminum alloy molding parts and heat treatment processes. According to the elective laser melting technology, the solubility of Mg, Sc and Zr alloy elements in aluminum matrix is greatly improved, the concentration of solid solution strengthening elements and dispersion strengthening particles in the aluminum alloy is increased, and the mechanical property of the aluminum alloy is improved. According to the aluminum alloy obtained by preparation of the selective laser melting technology, the highest density is 99.8%, the highest extension strength sigma b reaches 550 MPa, the yield strength sigma0.2 reaches 520 MPa, the plastic deformation rate of about 12 % is maintained, and the Al-Mg-Sc-Zr series aluminum alloy composition for the ctive laser melting technology and the preparation method for themolding part is applied to complicated structural parts with higher mechanical properties.

A method for forming and the structure of a strained lateral channel of a field effect transistor, a field effect transistor and CMOS circuitry is described incorporating a drain, body and source region on a single crystal semiconductor substrate wherein a hetero-junction is formed between the source and body of the transistor, wherein the source region and channel are independently lattice strained with respect the body region. The invention reduces the problem of leakage current from the source region via the hetero-junction and lattice strain while independently permitting lattice strain in the channel region for increased mobility via choice of the semiconductor materials and alloy composition.

A method of manufacturing a stent includes forming a stent blank including a predetermined alloy composition, the alloy composition including at least base element and at least one sacrificial element and forming a stent framework from the stent blank. The method further includes removing at least a portion of the sacrificial element and forming at least one pore based on the removal. A method of manufacturing a vascular treatment system includes forming a stent blank including a predetermined alloy composition including at least one base element and at least one sacrificial element. The method further includes forming a stent framework and removing at least a portion of the sacrificial element. The method also includes forming at least one pore based on the removal, bending the stent framework to a delivery shape, and attaching the bent stent framework including the formed pores to a catheter.

A nano-sized metal particle composite includes a first metal that has a particle size of about 50 nanometer or smaller. A wire interconnect is in contact with a reflowed nanosolder and has the same metal or alloy composition as the reflowed nanosolder. A microelectronic package is also disclosed that uses the reflowed nanosolder composition. A method of assembling a microelectronic package includes preparing a wire interconnect template. A computing system includes a nanosolder composition coupled to a wire interconnect.