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84 results about "Atomic composition" patented technology

Composition of the Atom. The atom consists of a tiny nucleus surrounded by moving electrons. The nucleus contains protons, which have a positive charge equal in magnitude to the electron's negative charge. The nucleus may also contain neutrons, which have virtually the same mass but no charge.

Method of producing a strip of nanocrystalline material and device for producing a wound core from said strip

The invention relates to a method of producing a strip of nanocrystalline material which is obtained from a wound ribbon that is cast in an amorphous state, having atomic composition [Fe1-a-bCoaNib]100-x-y-2-alpha-beta-gamma Cu<x>Si<y>BzNbalphaM'betaM''gamma, M' being at least one of elements V, Cr, Al and Zn, and M being at least one of elements C, Ge, P, Ga, Sb, In and Be, with: a <= 0.07 and b = 0.1, 0.5 <= x <=1.5 and 2 <= a <= 5, 10 <= y <= 16.9 and 5 <= z <= 8, beta <= 2 and gamma <= 2. According to the invention, the amorphous ribbon is subjected to crystallisation annealing, in which the ribbon undergoes annealing in the unwound state, passing through at least two S-shaped blocks under voltage along an essentially longitudinal axial direction of the ribbon, such that the ribbon is maintained at an annealing temperature of between 530 DEG C and 700 DEG C for between 5 and 120 seconds and under axial tensile stress of between 2 and 1000 Mpa. The tensile stress applied to the amorphous ribbon, the displacement speed of the ribbon during annealing and the annealing time and temperature are all selected such that the cross-section profile of the strip is not in the form of Omega and the maximum deflection of the cross-section of the strip is less than 3% of the width of the strip and preferably less than 1% of the width. The invention also relates to the strip and the core thus obtained and to the device used to implement the method.
Owner:IMPHY ALLOYS

Optical recording medium and data recording apparatus for recording data in the same

An optical recording medium includes a recording layer, a first dielectric layer disposed on the side of a light incidence plane through which the laser beam enters with respect to the recording layer, a second dielectric layer disposed on the side opposite to the light incidence plane with respect to the recording layer, a heat radiation layer disposed on the side of the light incidence plane with respect to the first dielectric layer and a reflective layer disposed on the side opposite to the light incidence plane with respect to the second dielectric layer, the recording layer containing a phase change material represented by an atomic composition formula: SbaTebGecTbd, where a is equal to or larger than 63 and equal to or smaller than 78, c is equal to or larger than 2 and equal to or smaller than 10, d is equal to or larger than 3 and equal to or smaller than 15, (a+d) is equal to or larger than 75 and equal to or smaller than 82 and a/b is equal to or larger than 3.3 and equal to or smaller than 4.9, in an amount equal to or more than 95 atomic %. According to the thus constituted optical recording medium, it is possible to simultaneously improve characteristics of recording data therein at a high linear velocity, data reproduction durability and storage reliability.
Owner:TDK CORPARATION

Preparation method of platiniridium/carbon-electro catalyst by using microwave synthesis

The invention discloses a preparation method of a platiniridium/carbon-electro catalyst by using microwave synthesis. The preparation method comprises the following steps of: evenly distributing nanometer carbon carriers in ethylene glycol solution containing both platinum metal salt and iridium metal salt at the same time, wherein the concentration of the platinum salt and the iridium salt is 0.001 to 0.01 mol/L; adding sodium acetate as a stabilizer, wherein the concentration of the sodium acetate in the resulting solution is 0.005 to 0.03 mol/L; then heating the well-distributed mixture of the nanometer carbon carriers and the metal salt ethylene glycol solution for 2 to 4 minutes by microwave radiation, and then filtering, washing and drying to obtain the platiniridium/carbon-electro catalysts. The atomic composition ratio of a platinum iridium alloy is PtxIry, wherein x is 0.1 to 1, and y is 0.1 to 1. The invention has the advantages that the nano-particles of the platinum iridium alloy, which are loaded on the surfaces of the carbon carriers, have small grain diameter averagely from 3 to 4 nm, and the grain diameter distribution is narrow, and the loading capacity of the alloy nano particles on the surface of the carbon carrier is 5% to 30%. The invention also has the advantages of high speed, simple process, high efficiency and energy saving. The platiniridium/carbon-electro catalyst is widely used in the field of electrochemical energy conversion.
Owner:赵杰 +1
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