Amorphous and nanocrystalline alloy with net structure and preparation method and application of amorphous and nanocrystalline alloy

Abstract

The invention relates to an amorphous nanocrystalline alloy with a net structure and a preparation method and application thereof, and the preparation method comprises the following steps: (1) fixing an amorphous alloy sample with the thickness of less than 50 microns on a bracket of an ion thinning instrument; (2) adjusting the angles of a left ion gun and a right ion gun of the ion thinning instrument, and preprocessing the sample for a first target duration under a first target voltage; and (3) the angles of the left ion gun and the right ion gun are reduced, the applied voltage is reduced to second target voltage, the sample obtained through treatment in the step (2) is treated for second target duration under the second target voltage, and the amorphous nanocrystalline alloy with the net structure is obtained. According to the method, the influence of high temperature on the amorphous alloy sample is eliminated by adopting the ion thinning instrument equipment, and the limitation of amorphous alloy annealing brittleness on industrial application can be effectively solved; and secondly, nanocrystals of the amorphous nanocrystalline alloy prepared by the method are uniformly dispersed in an amorphous framework, so that higher saturation flux density and magnetic conductivity can be obtained.

Description

technical field [0001] The invention belongs to the technical field of alloys, and in particular relates to an amorphous nanocrystalline alloy with a network structure and a preparation method and application thereof. Background technique [0002] Amorphous metals refer to solid metals in which atoms are arranged in space without long order, that is, they have no crystalline structure. For thousands of years, the metal materials that have been contacted and used have the translational symmetry of the atomic arrangement, and they are all crystalline metals. The emergence of amorphous metal is attributed to the breakthrough of amorphous metal process technology. As early as the 1930s, people used vapor deposition to obtain amorphous metal thin films. In 1969, Pond and Madden first reported the use of rapid rotation. The metal roll quenches the molten metal to prepare continuous long strips of amorphous alloys, which opens up a new way for the industrial production of amorphou...

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Problems solved by technology

The transition of this method depends on the long-distance diffusion between atoms, and the size of the formed nanocrystals is not easy to control, and the ratio of crystal / amorphous is low, which limits the increase of saturation magnetic induction and the decrease of coercive force.

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