Iron-based amorphous alloy, its preparation method and use in electric heating material

An iron-based amorphous alloy and electric heating technology, which is applied in the field of electric heating materials, can solve the problems of electrothermal film substrate shedding and power instability, and achieve the effects of stable power, high electrothermal conversion efficiency, and short thermal response time

Active Publication Date: 2020-04-24
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The Chinese patent with publication number CN1321056A discloses an amorphous (Fe-M)-Si-B-T-Z alloy electric heating material, wherein M is one or more elements in Co, Mn, Ni, and rare earth elements, and T is Zr and Nb , Hf, Mo and other elements are three or less elements, Z is one or two elements of Cu and V, this amorphous alloy is mainly used in electric heating film materials, and it has the characteristics of fast heating rate and high heat transfer efficiency However, the alloy resistance temperature coefficient and linear expansion coefficient of its preferred composition are relatively high, which will easily lead to problems such as power instability during the heating process, and the electrothermal film is easy to fall off from the substrate.
[0004] In summary, there is currently a lack of an electric heating material that is inexpensive, has excellent electrical / thermal properties, good thermal stability, and rapid heating

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  • Iron-based amorphous alloy, its preparation method and use in electric heating material
  • Iron-based amorphous alloy, its preparation method and use in electric heating material

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Embodiment 1

[0029] According to the iron-based amorphous alloy electric heating material composition Fe of the present invention a Ti b Ni c B d P e C f m g , prepare a series of amorphous alloy strips, wherein M is an element in Zr, Y, Ta, Hf, the specific composition and atomic percentage content are shown in Table 1, numbers 1-12 are examples, and numbers 13-16 are comparisons example.

[0030] According to the ingredients and atomic percentages of the alloys listed in Table 1, put the proportioned raw materials in a high-vacuum induction melting furnace and vacuumize to 5×10 -3 Pa, fill the argon protective gas to 0.5MPa, then turn on the melting power supply to start melting, the melting temperature is 1500-1600°C, after the raw materials are completely melted into molten steel, use magnetic stirring to mix the molten steel evenly, and keep it warm for 15 minutes; then melt The good molten steel is poured into a device with a nozzle, and the molten steel is sprayed on a rotati...

Embodiment 2

[0036] According to the iron-based amorphous alloy electric heating material composition Fe of the present invention aTi b Ni c B d P e C f m g , to prepare a series of amorphous alloy strips, wherein M is two or three elements in Zr, Y, Ta, Hf, the specific composition and atomic percentage content are shown in Table 2, and numbers 17-27 are examples.

[0037] According to the ingredients and atomic percentages of the alloys listed in Table 2, put the proportioned raw materials in a high-vacuum induction melting furnace and vacuumize to 5×10 -3 Pa, fill the argon protective gas to 0.5MPa, then turn on the melting power supply to start melting, the melting temperature is 1550-1650°C, after the raw materials are completely melted into molten steel, use magnetic stirring to mix the molten steel evenly, and keep it warm for 15 minutes; then melt The good molten steel is poured into the device with a nozzle, and the molten steel is sprayed on the rotating cooling roll with a...

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Abstract

The invention discloses an iron-based amorphous alloy, a preparing method of the iron-based amorphous alloy and application of the iron-based amorphous alloy to an electrical heating material. The iron-based amorphous alloy is composed of FeaTibNicBdPeCfMg, wherein a, b, c, d, e and f are all atom percents, a is larger than or equal to 45 and smaller than or equal to 70, b is larger than or equalto 10 and smaller than or equal to 25, c is larger than or equal to 3 and smaller than or equal to 20, d is larger than or equal to 5 and smaller than or equal to 15, e is larger than or equal to 1 and smaller than or equal to 6, f is larger than or equal to 0.5 and smaller than or equal to 3, g is larger than or equal to 1 and smaller than or equal to 5, and the sum of the a, the b, the c, the d,the e, the f and the g is 100; and the component M is at least one of Zr, Y, Ta and Hf. The iron-based amorphous alloy electrical heating material has the good electric heating performance, the low temperature coefficient of resistance is achieved, and the low coefficient of linear expansion is achieved. The iron-based amorphous alloy has the high abrasive resistance, the high corrosion resistance and the good toughness, can be widely applied to various electric heating devices, and has the important industrial application values.

Description

technical field [0001] The invention belongs to the field of electric heating materials, and in particular relates to an iron-based amorphous alloy electric heating material and a preparation method thereof. Background technique [0002] Along with the continuous development of industrial technology, various electric heating heaters are widely used in people's daily life. Most of the existing commonly used electric heating and heating devices use metal wire or silicon carbide as the heating element, such as small solar heaters, heating cable floor heating, etc., but there are many shortcomings. Electric heaters made of metal wires such as nickel-chromium wires, iron-chromium-aluminum wires, etc. are easy to oxidize and have a short service life; heating cables made of wire metal wires have a small heat dissipation area, slow indoor temperature rise, and easily cause local overheating; use silicon carbide The manufactured electric heater has poor resistance stability and is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02B22D11/06
CPCB22D11/0611C22C33/003C22C45/02
Inventor 王寅岗翟晓炳郑欢朱力
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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