5959 results about "Heat stability" patented technology

A STT-RAM MTJ is disclosed with a MgO tunnel barrier formed by natural oxidation and containing an oxygen surfactant layer to form a more uniform MgO layer and lower breakdown distribution percent. A CoFeB / NCC / CoFeB composite free layer with a middle nanocurrent channel layer minimizes Jc0 while enabling thermal stability, write voltage, read voltage, and Hc values that satisfy 64 Mb design requirements. The NCC layer has RM grains in an insulator matrix where R is Co, Fe, or Ni, and M is a metal such as Si or Al. NCC thickness is maintained around the minimum RM grain size to avoid RM granules not having sufficient diameter to bridge the distance between upper and lower CoFeB layers. A second NCC layer and third CoFeB layer may be included in the free layer or a second NCC layer may be inserted below the Ru capping layer.

Disclosed are a CH3 domain variant pair of an antibody, a method for preparing same, and a use thereof. A mutation is induced in the CH3 domain so as to improve a yield of forming a heterodimer heavy chain constant region of an antibody. The CH3 domain heterodimer forms a heterodimer heavy chain constant region with a high efficiency of 90 to 95% or more and also has outstanding heat stability. A heterodimer heavy chain constant region including the CH3 domain heterodimer can construct a bispecific monoclonal antibody which simultaneously recognizes two kinds of antigens. The CH3 domain heterodimer and the bispecific antibody or fusion protein of an antibody constant region comprising same can be usefully applied to the treatment or prevention of a disease associated with a target antigen or a target protein.

The invention is directed to a photochromic material that filters, from solar radiation, near infrared radiation and sufficient portions of ultraviolet radiation while transmitting actinic radiation in the wavelength range of about 341±5 nm. The light-transmitting photochromic material provides light and heat stability to achieve a longer useful life. This photochromic material is preferably incorporated in a multilayered structure with constituents provided on or contained within one or more layers to enhance the resistance to light fatigue.

A new class of light or reactive elements and monophase alpha'-matrix magnesium- and aluminum-based alloys with superior engineering properties, for the latter being based on a homogeneous solute distribution or a corrosion-resistant and metallic shiny surface withstanding aqueous and saline environments and resulting from the control during synthesis of atomic structure over microstructure to net shape of the final product, said alpha'-matrix being retained upon conversion into a cast or wrought form. The manufacture of the materials relies on the control of deposition temperature and in-vacuum consolidation during vapor deposition, on maximized heat transfer or casting pressure during all-liquid processing and on controlled friction and shock power during solid state alloying using a mechanical milling technique. The alloy synthesis is followed by extrusion, rolling, forging, drawing and superplastic forming for which the conditions of mechanical working, thermal exposure and time to transfer corresponding metastable alpha'-matrix phases and microstructure into product form depend on thermal stability and transformation behavior at higher temperatures of said light alloy as well as on the defects inherent to a specific alloy synthesis employed. Alloying additions to the resulting alpha'-monophase matrix include 0.1 to 40 wt. % metalloids or light rare earth or early transition or simple or heavy rare earth metals or a combination thereof. The eventually more complex light alloys are designed to retain the low density and to improve damage tolerance of corresponding base metals and may include an artificial aging upon thermomechanical processing with or without solid solution heat and quench and annealing treatment for a controlled volume fraction and size of solid state precipitates to reinforce alloy film, layer or bulk and resulting surface qualities. Novel processes are employed to spur production and productivity for the new materials.

The present invention relates to perpendicular magnetic recording media with improved signal-to-medium noise ratio (“SMNR”) and thermal stability, which media include a pair of vertically spaced-apart perpendicular ferromagnetic layers which are anti-ferromagnetically coupled (“AFC”) across a non-magnetic spacer layer. The invention is of particular utility in the fabrication of data / information storage and retrieval media, e.g., hard disks, having ultra-high areal recording / storage densities.

There is disclosed a magnetic recording medium in which a seed layer, under layer, intermediate layer, first magnetic layer, nonmagnetic layer, second magnetic layer, protective layer, and lubricant layer are successively laminated on a glass substrate, the nonmagnetic layer is constituted of an alloy containing Cr and C, and the magnetic layer is constituted of an alloy containing Co and Pt. The under layer includes at least the seed layer for finely dividing the crystal particles of the magnetic layer, the seed layer includes at least two or more layers of nonmagnetic films, and the intermediate layer formed of the material different from that of the nonmagnetic film is interposed between the nonmagnetic films. In measurement of the thermal stability of the magnetic recording medium, a head is used, the head includes a read / write element, and a write track width is twice or more as large as a read track width in the head.

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.

The invention discloses preparation of a multilayer composite membrane for a secondary battery by using an electrostatic spinning coating technology combined with a pore-forming technology, a manufacturing method of the multilayer composite membrane and the secondary battery prepared by using the membrane. The method is characterized by comprising the following steps of: (1) dissolving a high-molecular organic matter into a solvent to form a high-molecular solution; (2) adding a small-molecular organic matter and / or an inorganic nanometer material into the high-molecular solution to ensure that the small-molecular organic matter is dissolved into the high-molecular solution; dispersing an inorganic nanometer material into the high-molecular solution to form an organic / inorganic mixed solution; (3) uniformly coating the formed organic / inorganic mixed solution on at least one side of a film matrix by using the electrostatic spinning coating technology to form a composite film, and drying the composite film; and (4) extracting the small-molecular organic matter from the dried composite film to continuously dry and form the multilayer composite membrane for the secondary battery. By using the method, an inorganic complex of inorganic membranes is realized quickly and conveniently, the ionic conductivity of the lithium ion battery membrane can be improved, and the heat stability and the security of the battery are guaranteed; and the method has the advantages of being simple in operation and convenient for industrialization.

A novel approach is offered to produce a sterilizable medical package by laminating either a nonwoven fabric or a perforated film to a paper web. The laminate construction exhibits properties of heat stability, strength, microbial barrier, air / gas permeability and printability. The laminate construction becomes a self-sealing package that can be sterilized by various techniques, e.g. autoclave (heat), ethylene oxide or gamma radiation.

The embodiment of the invention discloses a wavelength conversion device, a diffuse reflection layer, a light source system and a projection system. The wavelength conversion device comprises a fluorescent layer containing fluorescent powder for realizing wavelength conversion, as well as the diffuse reflection layer attached to the backlight surface of the fluorescent layer; the diffuse reflection layer comprises white scattering particles and a first binding element bound with the white scattering particles; the ratio of the refractive index of the white scattering particles to that of the first binding element is greater than 1.2. After the invention is adopted, a thinner diffuse reflection layer can achieve high reflectivity, and the thinner diffuse reflection layer is beneficial to shortening of a heat conduction path of a luminous layer, so that the heat stability of the wavelength conversion device is improved.

The present invention provides a thermoelectric element comprising an electrically conductive substrate, a p-type thermoelectric material, and an n-type thermoelectric material; the p-type thermoelectric material being positioned on the substrate via an electrically conductive thermal buffer material, and the n-type thermoelectric material being positioned on the substrate via an electrically conductive thermal buffer material; wherein each thermoelectric material comprises a specific oxide and each electrically conductive thermal buffer material comprises an electrically conductive material having a thermal expansion coefficient between that of the thermoelectric material to which the thermal buffer material is bonded and that of the substrate. The invention also provides a thermoelectric module comprising a plurality of the thermoelectric elements. The thermoelectric element and the thermoelectric module have both a high thermoelectric conversion efficiency and excellent properties in terms of thermal stability, chemical durability, etc.

This invention relates to a 4 group metal oxide and to a method for preparation thereof and the 4 group metal oxide prepared by adding a particle growth inhibiter to a hydrosol a hydrogel or a dried product of a hydrous 4 group metal oxide represented by MO(2-x)(OH)2x (wherein M denotes a 4 group metal and x is a number greater than 0.1 or x>0.1) followed by drying and calcining has a specific surface area of 80 m<2> / g or more, a pore volume of 0.2 ml / g or more and a pore sharpness degree of 50% or more and excellent heat stability and is useful for a catalyst or a catalyst carrier in which a catalyst metal is dispersed to a high degree. This invention further relates to a porous 4 group metal oxide and to a method for preparation thereof and the 4 group metal oxide prepared by application of a pH swing operation is characterized by a large specific surface area, excellent heat stability, high dispersion of a catalyst metal and a controlled and sharp pore distribution and is useful for a catalyst or a catalyst carrier of excellent reaction selectivity.

The invention belongs to a polypropylene (PP) composite material with a low volatile organic compound (VOC) and high performance specially used for automotive upholsteries and a preparation method thereof, relating to the automobile field. The special material is prepared from the following components by mass percent: 60-80% of polypropylene (PP), 10-25% of reinforcing filler, 10-15% of flexibilizer, 0.2-0.5% of antioxidant and 0.1-0.5% of light stabilizer. The total volatile organic compound (TVOC) of the polypropylene composite material obtained in the invention is less than 40 mu gC / g; the notch impact strength of a cantilever beam under 23 DEG C is 15-40kJ / m2; the flexural modulus is 1500-2300MPa; the melt index is more than 10g / 10min at a temperature of 230 DEG C and at a weight of 2.16kg; and the composite material has favorable light and heat stability, low VOC, few components, low cost, good performance, easy preparation and can be widely used in the production of automotive upholsteries.

The invention relates to an infrared-excited oxide up-conversion luminescence piezoelectric material of a bismuth lamellar perovskite-like structure and a preparation method thereof. The up-conversion luminescence piezoelectric material has a chemical general formula of Am-1-x-RxYbyBi2BmO3M<+3>, wherein R is selected from Er<3+>, Ho<3+> and Tm<3+>, A is selected from Bi<3>, Ca<2+>, Sr<2+>, Ba<2+>, Pb<2+>, Na<+>, K<+>, La<3+> and Y<3+>, B is selected from Ti<4+>, Zr<4+>, Nb<5+>, Ta<5+>, W<6+> and Mo<6+>, m is a positive integer not smaller than 2 and not more than 8, x is not smaller than 0.000001 and not more than 0.3, and y is not smaller than 3.0 and not more than 0.6. The up-conversion luminescence piezoelectric material is prepared by adopting a solid-phase reaction method, has the characteristics of good thermal stability, good chemical stability, easiness for synthesis, high luminous intensity and adjustable color, and can be widely applied to various aspects such as three-dimensional display, infrared detection, counterfeiting prevention, solar cells and photoelectric integration, micro-electro-mechanical systems, photoelectric sensing and the like.

A steel sheet excellent in mechanical strength, workability and thermal stability and suited for use as a raw material in such fields of manufacturing automobiles, household electric appliances and machine structures and of constructing buildings, and a manufacturing method thereof. are provided.The steel sheet is a hot-rolled steel sheet of carbon steel or low-alloy steel, the main phase of which is ferrite, and is characterized in that the average ferrite crystal grain diameter D (μm) at the depth of ¼ of the sheet thickness from the steel sheet surface satisfies the relations respectively defined by the formulas (1) and (2) given below and the increase rate X (μm / min) in average ferrite crystal grain diameter at 700° C. at the depth of ¼ of the sheet thickness from the steel sheet surface and said average crystal grain diameter D (μm) satisfy the relation defined by the formula (3) given below:1.2≦D≦7   formula (1)D≦2.7+5000 / (5+350·C+40·Mn)2  formula (2)D·X≦0.1   formula (3)wherein C and Mn represent the contents (in % by mass) of the respective elements in the steel.

The invention provides a composite solid electrolyte and a preparation method thereof, a flexible all-solid-state battery and a preparation method of the flexible all-solid-state battery and a wearable electronic device. The composite solid electrolyte comprises a ceramic-based solid electrolyte and a first polymer-based solid electrolyte, wherein the content of the ceramic-based solid electrolyte is 20-90wt% of total weight of the composite solid electrolyte. The composite solid electrolyte provided by the invention has good mechanical property, high ionic conductivity at a room temperature, good heat stability and electrochemical stability and high safety and can be effectively prevented from being perforated by lithium dendrites, and a good interface contact is formed by the composite solid electrolyte and a composite positive electrode, thereby obtaining the flexible all-solid-state battery which is high in area specific capacity and energy density, relatively small in battery internal resistance and high in flexibility and can be bent and cut and of which use is not affected.

The invention, belonging to photoelectric material scientific and technical sphere, relates the new handling method of diarylamine and carbazoles materials and the application as the hole transmission material. Compared with the untreated material, the dead-end diarylamine and carbazoles poessess the high heat stability and glass transition temperature. Comprared with the other methods of preparing the material, the handling method has the following advantages: 1. convenient handling method, simple technology; 2. mild reaction condition, not needing transient metal accelerant; 3. high productivity, direct processing polymeric material; 4. mass production. The said hole transmission material will become the photoelectric material of low cost and commercialization potentiality.

The invention discloses an injection molding grade flame retardant PVC / ABS alloy material and a preparation method thereof. The alloy material comprises the following components in parts by weight: 30-80 parts of PVC resin, 35-70 parts of ABS resin, 1-6 parts of a heat stabilizer, 2-5 parts of a processing agent, 2-15 parts of an impact modifier, 1-10 parts of a heat resistant modifier, 2-5 parts of a plasticizer, 2-8 parts of a fire retardant, 3-10 parts of a smoke suppression agent and 3-15 parts of other accessory ingredients. The PVC / ABS alloy material disclosed by the invention adopts the high-fluidity PVC resin and the heat-resistance, high-toughness and high-fluidity ABS resin, so that the PVC / ABS alloy material has excellent mechanical performance and processing fluidity; on the premise of guaranteeing excellent physical performance of the material, the obtained PVC / ABS alloy material further improves the processing fluidity, the heat stability, the flame resistance and the heat resistance of products, and reduces the smoke density.

The present invention provides composite phase transition heat accumulation material used gel as carrier, and the preparation method and the application of the material. The material of the present invention is formed by compositing the phase transition heat accumulation material accounted for 60 percent to 80 percent of the total mass into a macromolecule gel carrier accounted for 20 percent to 40 percent of the total mass, the material has thermo-plasticity and better thermo stability, compared with the same kind of macromolecule heat accumulation material, the material has higher phase transition enthalpy. The material can be used in temperature control and energy saving for buildings, and can also be used in heat preservation and energy saving fields for daily articles, thereby the present invention has wide application prospect.