Amorphous powdered alloy and method for producing the same

An amorphous alloy and powder technology, which is applied in the field of preparation of amorphous alloy powder, can solve the problems of inability to prepare a particle size range, limit the formability of amorphous alloys, etc. Effect

Inactive Publication Date: 2008-06-11
BYD CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] According to the practice of the current prior art, it is still impossible to prepare Zr-based, Cu-based, Ti-based, Ni-based or Re-based amorphous alloy powders with a wide range of particle sizes, especially large particle sizes, by atomization.
Because in the process of preparing amorphous alloys, a certain concentration of oxygen elements will be introduced into the alloy due to the impurity of raw materials. Formability of amorphous alloy

Method used

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  • Amorphous powdered alloy and method for producing the same

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preparation example Construction

[0019] The preparation method of the amorphous alloy powder of the present invention comprises: (a), under protective atmosphere or vacuum condition, smelting Zr-based, Cu-based, Ti-based, Ni-based or Re-based amorphous alloy raw materials; ( b) Spraying the molten metal into a mist in a protective atmosphere, and rapidly cooling and solidifying to form an amorphous alloy powder; wherein, in step (a), rare earth elements are added together with the amorphous alloy raw material for smelting.

[0020] The alloy raw material used in the present invention is not particularly limited, and can be known to those skilled in the art. For example, the Zr-based amorphous alloy Zr in the present invention aCu b Ni c m d N e The raw materials are: Zr with a mole percentage of 40≤a≤70; Cu with 2≤b≤20; Ni with 2≤c≤20, M with 2≤d≤30 and N with 0.1≤e≤10, and a +b+c+d+e=100%; N is rare earth element La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y, Nb, Hf One or more mixtures; M ...

Embodiment 1

[0028] This embodiment is used to illustrate a kind of Zr that the present invention provides 55 Cu 20 Ni 12 al 11 Y 2 The preparation method of amorphous alloy powder.

[0029] Prepare amorphous alloy raw materials according to mole percentage: 55% Zr, 20% Cu, 12% Ni, 11% Al and 2% Y. The purity of the rare earth element Y is not lower than 98wt%, and the purity of other non-impurity elements in the alloy components is not lower than 98wt%.

[0030] Put the raw materials and rare earth elements into the vacuum induction metal atomization powder making furnace, vacuumize the induction furnace and fill it with 10 -2 Atm argon, use induction melting to heat at about 1000°C for 3 to 5 minutes, and the raw materials are melted and mixed evenly.

[0031] The molten metal is subjected to high-pressure inert gas argon, and the gas pressure is 500Mpa, so that the metal liquid is sprayed into a mist, and rapidly cooled to form Zr with a particle size of 100 microns. 55 Cu 20 Ni...

Embodiment 2

[0033] This embodiment is used to illustrate a kind of Ni provided by the present invention 55 Zr 20 Ti 12 Si 5 Nb 8 The preparation method of amorphous alloy powder.

[0034] The raw material of amorphous alloy is prepared according to mole percentage: 55% Ni, 20% Zr, 12% Ti, 5% Si and 8% Nb. The purity of the rare earth element Nb is not lower than 99wt%, and the purity of other non-impurity elements in the alloy is not lower than 98.5wt%.

[0035] Put the raw materials and rare earth elements into the vacuum induction metal atomization powder making furnace, vacuumize the induction furnace and fill it with 10 -2 Atm argon, use induction melting to heat at about 1000°C for 3 to 5 minutes, and the raw materials are melted and mixed evenly.

[0036] The molten metal is subjected to high-pressure inert gas argon, and the gas pressure is 100Mpa to make the metal liquid spray into a mist, and it is rapidly cooled to form Ni with a particle size of 1800 microns. 55 Zr 20 T...

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Abstract

The invention provides a non-crystal alloy powder, which comprises compounds which contain at least one or a plurality of the non-crystal alloy powder as Zr group, Cu group, Ti group, Ni group and Re group which contain rare-earth elements. Average particle diameters of powder are 50 micrometers-2000 micrometers. The invention also provides a process for preparing the non-crystal alloy powder, which comprises firstly, smelting the non-crystal alloy raw materials as Zr group, Cu group, Ti group, Ni group and Re group under protecting environment or a vacuum condition, and secondly, spraying melted metal into mist under the protecting environment and producing the non-crystal alloy powder with flash cold-settings, wherein the rare-earth elements are added in the first step to be smelted with the non-crystal alloy raw materials. The non-crystal alloy powder which is obtained through the invention has wide grain-size range, and the powder which is prepared can be used for addition agent of antifriction materials. The process for preparation has low requirements for preparing environment and pureness of raw materials, and is applied to productions with commercial scales.

Description

technical field [0001] The invention relates to an amorphous alloy powder and a preparation method of the amorphous alloy powder. Background technique [0002] Compared with conventional polycrystalline metal materials, amorphous alloys have extremely high strength, hardness, wear resistance, corrosion resistance and high electrical resistance due to the long-range disorder of the structure and the absence of grain boundaries, and also exhibit excellent With the characteristics of superconductivity and low magnetic loss, it has been widely used in IT electronics, machinery, chemical industry and other industries. [0003] At present, the manufacturing method of amorphous material is usually to obtain a thin strip-shaped material with a thickness of about 200 microns by using a single-roll quenching method, or to draw it into a filamentous material. [0004] Chinese patent 93109121.7 discloses a preparation method of Nd-Fe-B amorphous alloy powder. The alloy raw material is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00C22C1/04
Inventor 姜霖琳张法亮宫清
Owner BYD CO LTD
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