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Magnetic material, application of the same, manufacturing method of the same and motor comprising the same

A technology of magnetic materials and permanent magnets, applied in the direction of magnetic materials, magnetic circuits characterized by magnetic materials, magnetic objects, etc., can solve the problems of high raw material cost and manufacturing cost availability of rare earth metals, and avoid insufficient supply and large magnetic energy. Product, high coercive field strength effect

Inactive Publication Date: 2016-02-17
ROBERT BOSCH GMBH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to their limited chemical, mechanical and thermal long-term stability, conventional ferrites have not been realized by Nd 2 Fe 14 A complete replacement for B
Further to Nd 2 Fe 14 B Disadvantage is its high raw material cost and manufacturing cost and limited availability of rare earth metals in the free market due to high share of rare earth metals

Method used

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  • Magnetic material, application of the same, manufacturing method of the same and motor comprising the same
  • Magnetic material, application of the same, manufacturing method of the same and motor comprising the same
  • Magnetic material, application of the same, manufacturing method of the same and motor comprising the same

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Embodiment Construction

[0026] figure 1 An optical micrograph of a lap of magnetic material 10 according to the invention is shown under polarized light. The magnetic material 10 according to the present invention contains 80 atomic percent of iron, 8 atomic percent of Sm, 8 atomic percent of molybdenum, and 4 atomic percent of aluminum and mainly uses RE(TM, Mo) 12 Structures 1, 2, 4 exist. Hard magnetic RE(TM, Mo) 12 Structures 1, 2, 4 can be identified from the so-called Kerr pattern, i.e. a - depending on viewing angle - rosette-like or stripe-like pattern, which indicates a highly anisotropic RE(TM, Mo) 12 Composition of such a strong magnetic phase exists. Reference numerals 2 and 4 are in figure 1 The RE(TM, Mo) which also represents strong magnetism 12 However, it has such an orientation for the incident polarized light vector of the optical microscope that from this viewing direction the Kerr pattern cannot be recognized as striated or only slightly striated. exist figure 1 , the refe...

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Abstract

The invention relates to a magnetic material, an application of the same, a manufacturing method of the same and a motor comprising the same, The magnetic material comprises at least one transition metal, at least one rare earth metal, molybdenum and aluminum, wherein the portion of the transition metal is 65-95 atomic percent, the portion of the rare earth metal is 3-13 atomic percentage, the portion of the molybdenum is 4-20 atomic percentage, and the portion of the aluminum is 1-20 atomic percentage, relative to the total weight of the magnetic material.

Description

technical field [0001] The invention relates to a magnetic material with improved magnetic properties, its use, a method for producing the magnetic material and an electrical machine comprising the magnetic material. Background technique [0002] Due to the increasing use of electric motors in recent times, especially in motor vehicle construction, the demand for high-performance magnetic materials, and especially permanent magnets, has grown strongly in recent years. Suitable magnetic materials here include those with a magnetically hard phase, which are characterized by high remanent magnetization, large coercive fields and large magnetic energy products. Magnetic materials containing at least one rare earth metal such as neodymium (Nd), praseodymium (Pr) and samarium (Sm), and at least one transition metal such as iron (Fe) or cobalt (Co) have proven to be particularly Efficient, that is, with a large magnetic energy product. Such materials are often doped with intersti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/053C22C1/02H02K1/02
Inventor G·施奈德A·胡贝尔J·奥伯勒D·戈尔F·克彭L·博默R·施泰因R·卡里米R·勒夫勒
Owner ROBERT BOSCH GMBH
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