摘要:
A method for additive manufacturing of three-dimensional objects from metallic glasses utilising a process of melting of successive layers of the starting material by a laser beam or an electron beam according to the invention consists in the fact that every material layer is melted twice, using parameters which yield a crystalline melt trace in the first melting, and the successively melted beam paths contact with one another, while in the second melting, parameters yielding an amorphous melt trace are used, and the successively remelted paths or spots do not come in contact with one another, and/or between the scanning of successive paths or spots, an interval not shorter than 10 ms is maintained, the surface power density in the first remelting being lower than in the second remelting.
摘要:
Provided is a soft magnetic alloy including Fe as a main component, in which a slope of an approximate straight line, plotted between cumulative frequencies of 20 to 80% on Fe content in each grid of 80000 grids or more, each of which has 1 nm × 1 nm × 1 nm, is -0.1 to -0.4, provided that Fe content (atom%) of each grid is Y axis, and the cumulative frequencies (%) obtained in descending order of Fe content in each grid is X axis, and an amorphization ratio X is 85% or more.
摘要:
A soft magnetic alloy comprising a compositional formula of ((Fe (1-(α+β)) X1 α X2 β ) (1-(a+b+c+e)) M a B b P c Cu e ) 1-f C f , wherein X1 is one or more selected from the group consisting Co and Ni, X2 is one or more selected from the group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Bi, N, O, and rare earth elements, "M" is one or more selected from the group consisting of Nb, Hf, Zr, Ta, Ti, Mo, W, and V, 0.030
摘要:
The present invention achieves an object of continuously supplying a melt from a melt nozzle over a long period of time by adjusting the contents of Mn and S in an Fe-B-Si-C-type amorphous alloy ribbon. An amorphous alloy ribbon of the present invention includes a composition containing Fe, Si, B, C, Mn, S, and inevitable impurities, the composition containing, with respect to 100.0 atm% of the total amount of Fe, Si, B, and C, 3.0 atm% or more and 10.0 atm% or less of Si, 10.0 atm% or more and 15.0 atm% or less of B, and 0.2 atm% or more and 0.4 atm% or less of C, the amorphous alloy ribbon having a content ratio of Mn of more than 0.12 mass% and less than 0.15 mass%, and a content ratio of S of 0.0036 mass% or more and less than 0.0045 mass%, the amorphous alloy ribbon having a thickness of 10 µm or more and 40 µm or less, and a width of 100 mm or more and 300 mm or less.
摘要:
The invention relates to a novel method for producing magnets (especially applicable to the production of magnets containing rare earths). The novelty of the method lies in its use of a type of electrical consolidation (such as so-called electrical resistance sintering, ERS, or so-called electrical discharge consolidation, EDC, but not necessarily one of the these) as a substitute for the conventional cold pressing and sintering method which is usually used. The method according to the invention achieves: (1) combining the compacting/sintering steps, significantly cutting the duration thereof and reducing the magnitude of the working pressures; (2) implementing the steps of magnetic aligning, pressing/sintering, heat treatment and magnetising in the same matrix; and (3) rendering superfluous the use of protective atmospheres during the sintering process.
摘要:
The present invention concerns a composite iron-based powder mix suitable for soft magnetic applications such as inductor cores. The present invention also concerns a method for producing a soft magnetic component and the component produced by the method.
摘要:
The present invention relates to a high hardness amorphous composite, a method of preparing the high hardness amorphous composite and application thereof. The high hardness amorphous composite includes a basic alloy component, a hard additive and a bonding additive. The basic alloy component includes 45-60 mole% Zr, 5-10 mole% Hf, 5-15 mole% Al, 8-22 mole% Ni and 6-14 mole% Cu, the hard additive is ZrC or WC nanometer powder with addition amount at 12-26 wt% of the basic alloy component, particle diameter of the WC nanometer powder is 10-100 nm, and the bonding additive is any one or two selected from groups of Re, W or Mo with addition amount at 4-8 wt% of the basic alloy component. The high hardness Zr-based amorphous composite with good workability and formability is provided by improving composition of alloy based on Zr-Al-Ni-Cu, adding new component and adjusting component content.
摘要:
Provided is a soft magnetic dust core having high density and favorable properties. A method of manufacturing a soft magnetic dust core includes: preparing coated powder including amorphous powder made of an Fe-B-Si-P-C-Cu-based alloy, an Fe-B-P-C-Cu-based alloy, an Fe-B-Si-P-Cu-based alloy, or an Fe-B-P-Cu-based alloy, with a first initial crystallization temperature T x1 and a second initial crystallization temperature T x2 ; and a coating formed on a surface of particles of the amorphous powder; applying a compacting pressure to the coated powder or a mixture of the coated powder and the amorphous powder at a temperature equal to or lower than T x1 - 100 K; and heating to a maximum end-point temperature equal to or higher than T x1 - 50 K and lower than T x2 with the compacting pressure being applied.