阅读说明：本技术 一种用纳米结构铁素体合金形成的产品 (Product formed by nano-structure ferrite alloy ) 是由 郭皓 黄刚 彭长宏 于 2018-07-17 设计创作，主要内容包括：一种用纳米结构铁素体合金形成的产品,包括软磁元件,软磁元件含有纳米结构铁素体合金,所述纳米结构铁素体合金包括多个设置在含铁合金基体内的纳米部件,所述纳米部件包含氧化物。本发明在从较高应力和较低温到较高温和较低应力的情况下,它都能保持其机械的完整性和磁特性。(A product formed with a nanostructured ferritic alloy, comprising a soft magnetic component comprising a nanostructured ferritic alloy including a plurality of nano-components disposed within a ferrous alloy matrix, the nano-components including an oxide. The present invention maintains its mechanical integrity and magnetic properties under conditions ranging from higher and lower temperatures to higher and lower stresses.)

1. A product formed from a nanostructured ferritic alloy, characterized by: including a soft magnetic component comprising a nanostructured ferritic alloy including a plurality of nano-components disposed within an iron-containing alloy matrix, the nano-components including an oxide.

2. The article of claim, wherein the nanostructured ferritic alloy comprises: the soft magnetic element is a rotor or an armature.

3. The article of claim, wherein the nanostructured ferritic alloy comprises: the alloy matrix includes titanium, at least about 35% by weight iron, and at most about 60% by weight cobalt.

4. The article of claim, wherein the nanostructured ferritic alloy comprises: the oxide includes: titanium, and at least one element selected from yttrium, hafnium, aluminum, and zirconium.

5. The article of claim, wherein the nanostructured ferritic alloy comprises: the nanostructured ferritic alloy comprises an alloy matrix comprising at least about 35% by weight iron, from about 0.1% by weight to about 1% by weight titanium, and from about 20% by weight to about 55% by weight cobalt; and a plurality of nano-components disposed within the alloy matrix, wherein the nano-components include an oxide including titanium and at least one element selected from yttrium, hafnium, aluminum, and zirconium; wherein the nano features have an average size in a range from about 1 nanometer to about 50 nanometers and a number density of at least about 1020 nano features per cubic meter of the nanostructured ferritic alloy.

6. The article of claim, wherein the nanostructured ferritic alloy comprises: the nanostructured ferritic alloy comprises an alloy matrix comprising at least about 50% by weight iron, from about 0.1% by weight to about 1% by weight titanium, and up to about 8% by weight silicon; and a plurality of nano-components disposed within the alloy matrix, wherein the nano-components include an oxide including titanium and at least one element selected from yttrium, hafnium, aluminum, and zirconium; wherein the nano features have an average size in a range from about 1 nanometer to about 50 nanometers and a number density of at least about 1020 nano features per cubic meter of the nanostructured ferritic alloy.

Technical Field

The present invention relates to a product comprising a soft magnetic component comprising a nanostructured ferritic alloy, in particular a product formed with a nanostructured ferritic alloy.

Background

Soft magnetic components have a critical role in many applications, particularly in electrical and electromagnetic devices. There is an increasing demand for light and small motors. The design of a small motor can be realized by increasing the rotating speed of the motor. For motors to operate at high speeds, these motors require materials that can operate at high flux densities. The element must also have high tensile strength according to service life requirements and not fail structurally. While the element should be able to allow relatively low core losses. It is clear to those skilled in the art that when conventional materials are used to form the soft magnetic component, it can be difficult to achieve both high mechanical strength and excellent soft magnetic properties. Generally, high strength components are obtained at the expense of important magnetic properties (magneticproperties), such as magnetic saturation (magneticsatuation) and core loss.

Disclosure of Invention

It is an object of the present invention to overcome the above-mentioned deficiencies of the prior art and to provide a product formed from a nanostructured ferritic alloy which maintains its mechanical integrity and magnetic properties under conditions of high and low stress, to high and low temperature.

The technical scheme of the invention is as follows: including a soft magnetic component comprising a nanostructured ferritic alloy including a plurality of nano-components disposed within an iron-containing alloy matrix, the nano-components including an oxide.

The soft magnetic element is a rotor or an armature.

The alloy matrix includes titanium, at least about 35% by weight iron, and at most about 60% by weight cobalt.

The oxide includes: titanium, and at least one element selected from yttrium, hafnium, aluminum, and zirconium.

The nanostructured ferritic alloy comprises an alloy matrix comprising at least about 35% by weight iron, from about 0.1% by weight to about 1% by weight titanium, and from about 20% by weight to about 55% by weight cobalt; and a plurality of nano-components disposed within the alloy matrix, wherein the nano-components include an oxide including titanium and at least one element selected from yttrium, hafnium, aluminum, and zirconium; wherein the nano features have an average size in a range from about 1 nanometer to about 50 nanometers and a number density of at least about 1020 nano features per cubic meter of the nanostructured ferritic alloy.

The nanostructured ferritic alloy comprises an alloy matrix comprising at least about 50% by weight iron, from about 0.1% by weight to about 1% by weight titanium, and up to about 8% by weight silicon; and a plurality of nano-components disposed within the alloy matrix, wherein the nano-components include an oxide including titanium and at least one element selected from yttrium, hafnium, aluminum, and zirconium; wherein the nano features have an average size in a range from about 1 nanometer to about 50 nanometers and a number density of at least about 1020 nano features per cubic meter of the nanostructured ferritic alloy.

The invention has the beneficial effects that: it retains its mechanical integrity and magnetic properties under conditions ranging from higher and lower temperatures to higher and lower stresses.

Drawings

Fig. 1 is a schematic structural view of the present invention.

In the figure, 1, a motor, 2, a rotor assembly, 3, a rotor shaft, 4, a rotor core, 5, a stator assembly, 6, a bearing assembly, 7, a bearing assembly, 8 and a stator winding.

Detailed Description

In fig. 1, magnetic materials of relatively high magnetic permeability, high saturation magnetization (saturation magnetization), low core loss, and high mechanical strength may be required in many electrical devices and components for applications including aviation, wind power generation, and electric vehicles. There is a continuing need for soft magnetic components having improved magnetic properties and high mechanical strength. Embodiments of the invention described herein address significant shortcomings of the prior art. Products including soft magnetic components are disclosed herein. The soft magnetic component contains a nanostructured ferritic alloy. The nanostructured ferritic alloy includes a plurality of nano-components disposed within an iron-containing alloy matrix, wherein the nano-components include an oxide. The product can be used in devices such as motors or generators that use magnetic materials in the rotating elements, where mechanical integrity and magnetic properties can affect overall performance, life, and other factors. The use of nanostructured ferritic alloys to form soft magnetic components, as compared to prior art materials, provides rotating components with relatively higher strength, relatively lower coercivity losses, and relatively higher saturation magnetization. The invention includes soft magnetic components. The soft magnetic component contains a nanostructured ferritic alloy. Nanostructured ferritic alloys are an emerging alloy family. A typical nanostructured ferritic alloy comprises a ferrous alloy matrix reinforced within its matrix by nano-components, the term "nano-components" as used herein meaning object particles having a longest dimension less than about 100 nanometers in size. The nano-components may have any shape including, for example, spherical, cubic, crystalline, and other shapes. The electromagnetic and mechanical properties of the nanostructured ferritic alloy can be controlled by controlling, for example, the density (i.e., number density-number of particles per unit volume) of the nano-components within the matrix, the composition of the nano-components, and the process of forming the product. The nano-components of the nanostructured ferritic alloy comprise an oxide. In one embodiment, the oxide comprises titanium and at least one additional element selected from yttrium, hafnium, aluminum or zirconium, and in a particular embodiment, the additional component is yttrium. In certain embodiments, the oxide further comprises one or more other elements, such as chromium, nickel, iron, molybdenum, tungsten, niobium, aluminum, tantalum, cobalt, or vanadium. The actual composition of the oxides depends in part on the composition of the alloy matrix and the composition of the raw materials used to process the material, as will be discussed in more detail below. In particular embodiments, the oxide comprises titanium and yttrium.