2results about How to "Enhanced Amorphous Formation Ability" patented technology

The invention discloses a cobalt-based amorphous magnetically soft alloy material, preparation thereof and a composite wave absorbing structure based on magnetically soft alloy. The alloy material comprises the following components: CoaFebNicSidBeCrf, 60 < = a < = 70, 2 < = b < = 6, 0.5 < = c < = 5, 10 < = d < = 20, 10 < = e < = 20, 0.5 < = f < = 5, and a + b + c + d + e + f = 100, and the alloy material has low saturation flux density, low coercive force and high initial permeability, and also has excellent corrosion resistance and oxidation resistance. The composite wave-absorbing structure obtained by taking the amorphous magnetically soft alloy material as the frequency selective surface is simple, the pattern of the frequency selective surface is simple, and the manufacturing cost is low; the prepared wave-absorbing material is low in total thickness, effective absorption bandwidth is greatly improved, and the wave-absorbing material has the characteristics of lightness, thinness and broadband absorption and is of great significance in promoting development of light, thin and broadband wave-absorbing materials.

This invention belongs to the field of magnetic functional materials technology, specifically relating to an amorphous nanocrystalline ribbon and its preparation method. The amorphous nanocrystalline ribbon is composed of the following raw materials in the indicated mass percentages: Nb 5.6-6.5 wt%, Si 9.5-10.5 wt%, B 1-2 wt%, Cu 0.5-1 wt%, Co 0.1-0.2 wt%, Zr 0.05-0.1 wt%, rare earth elements 0.4-1.5 wt%, high-entropy oxide 0.5-1.0 wt%, with the balance being Fe. The high-entropy oxide is prepared by adding ferric chloride, cobalt chloride, nickel chloride, manganese chloride, and scandium chloride to diethylene glycol, heating and stirring under sealed conditions, followed by centrifugation, washing, drying, and calcination to obtain the high-entropy oxide. The amorphous nanocrystalline ribbon prepared by this invention exhibits high magnetic permeability, low coercivity, and high stability within the temperature range of -40℃ to +150℃.