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A method for producing a hybrid magnet and the hybrid magnet produced by the method

A technology of magnets and mixtures, applied in the direction of magnetic circuits characterized by magnetic materials, magnetic objects, inductors/transformers/magnets, etc., can solve the problem of limited mechanical strength and thermal durability, and the magnetism that is not fully utilized. question

Inactive Publication Date: 2017-02-01
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this component has only limited mechanical strength and thermal durability due to the presence of polymers between the magnet particles, in addition to not maximally exploiting magnetic properties.

Method used

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  • A method for producing a hybrid magnet and the hybrid magnet produced by the method
  • A method for producing a hybrid magnet and the hybrid magnet produced by the method
  • A method for producing a hybrid magnet and the hybrid magnet produced by the method

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Embodiment Construction

[0086] figure 1 A flow diagram of the method according to the invention according to a first embodiment is shown. The very schematic intermediate products and end products of the different process steps are shown in FIG. 2 .

[0087] Firstly, in step S1 a first powder 10 of a first magnetic material 12 (hereinafter also referred to as magnetic material or magnetic raw material) is provided. For example, a hard magnetic material such as an alloy of the composition Nd2Fe14B is used as the first magnetic material 12 . The starting point for the powdering is, for example, magnetic raw materials, which are melted in a vacuum induction furnace, poured out and solidified by cooling. Here, the crystalline structure will give an isotropic alloy. After hardening, the product, for example in the form of strips, can be broken mechanically and subsequently ground, for example in a jet mill, under an inert gas atmosphere (eg nitrogen). Other methods of powder production can likewise be...

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Abstract

The issue of the invention is 'a method for producing a hybrid magnet and the hybrid magnet produced by the method'. The invention relates to a method for producing a hybrid magnet (20) and the hybrid magnet (20) produced by the method. The hybrid magnet comprises nucleons (15, 15') made of at least two different magnetic materials (12, 13') and an amorphous matrix (21) made of an antimagnetic or paramagnetic material (22). The nucleons (15, 15') are embedded into the matrix (21).

Description

technical field [0001] The invention relates to a method for producing a hybrid permanent magnet and a hybrid magnet which can be produced by this method. Background technique [0002] The demand for highly efficient permanent magnets, such as those used in electrical machines, continues to rise. Permanent magnets are used in particular in electric motors for traction of motor vehicles, which are benefiting during the increasing number of electric vehicles. [0003] Magnetic raw materials can be systematically grouped in different classifications by means of different criteria. For example, based on bonding conditions and structure, it is divided into metal crystalline raw materials, metal amorphous raw materials and oxidized raw materials. Another classification in the physical sense is based on the coercive force H cb the size of. Here, it is divided into soft magnetic raw materials, semi-hard magnetic raw materials and hard magnetic raw materials. Figure 6 The coerci...

Claims

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Application Information

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IPC IPC(8): H01F41/02H01F1/057H01F1/147
CPCH01F1/0576H01F1/0577H01F1/14741H01F41/0253H01F41/0266H01F1/0579H01F1/086H02K1/02
Inventor B.兹拉特科夫Z.迪伊诺维奇A.M.拉库
Owner VOLKSWAGEN AG
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