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A quartz tube blow-casting method for preparing columnar iron-based bulk amorphous alloys using industrial-grade raw materials

An amorphous alloy, industrial-grade technology, applied in the field of bulk amorphous alloy preparation, can solve the disadvantages of amorphous alloys and other problems, and achieve the effect of simple preparation process

Inactive Publication Date: 2016-04-06
XINJIANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method has some disadvantages. The container used in this technique is a copper mold. Although copper has a large thermal conductivity and allows the sample to obtain a large cooling rate, the crystalline copper will become a potential heterogeneous nucleation site. , which is unfavorable for the preparation of amorphous alloys. In copper mold casting technology, crystallization often starts from the place where the molten alloy contacts the copper mold, which confirms this

Method used

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  • A quartz tube blow-casting method for preparing columnar iron-based bulk amorphous alloys using industrial-grade raw materials
  • A quartz tube blow-casting method for preparing columnar iron-based bulk amorphous alloys using industrial-grade raw materials
  • A quartz tube blow-casting method for preparing columnar iron-based bulk amorphous alloys using industrial-grade raw materials

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Determine the alloy composition as Fe 80 P 13 C 7 , due to the use of industrial-grade raw materials containing a large number of impurities, the actual composition of the obtained alloy is Fe 79.4 Si 1.0 P 12.8 C 6.8. Using a precision balance, weigh industrial cast iron (Fe:81.191, Si:2.667, P:0.165, C:15.956, S:0.018, at.%) 0.6383g, industrial Fe-P alloy (Fe:60.140, Si:0.0152, P: 39.773, C: 0.057, S: 0.017, at.%) 0.4517g, commercial grade pure iron (Fe>95mass%) 0.4199g, a total of 1.51g was placed in an ordinary quartz test tube. Under the protective atmosphere of high-purity argon at 0.95 atmospheric pressure, use a gun to fuse the raw materials in the test tube to form the initial alloy master ingot; put the alloy master ingot into the anhydrous B in molten state 2 o 3 Put the test tube into an ordinary quartz test tube with a ratio of 3.5:1 to CaO and put the test tube into an SKL vertical tube sintering furnace (at a temperature of 1250°C) for 5 hours of ...

example 2

[0022] Determine the alloy composition as Fe 78 P 13 C 9 , due to the use of industrial-grade raw materials containing a large number of impurities, the actual composition of the obtained alloy is Fe 77.6 Si 1.4 P 12.7 C 8.3 . Using a precision balance, weigh 0.8355g of industrial cast iron (Fe: 81.191, Si: 2.667, P: 0.165, C: 15.956, S: 0.018, at.%), industrial Fe-P alloy (Fe: 60.140, Si: 0.0152, P: 39.773, C: 0.057, S: 0.017, at.%) 0.4592g, commercial grade pure iron (Fe>95mass%) 0.2184g, a total of 1.51g was placed in an ordinary quartz test tube. Under the protective atmosphere of high-purity argon at 0.95 atmospheres, use a gun to melt the raw materials in the test tube into an alloy master ingot; put the alloy master ingot into anhydrous B in a molten state 2 o 3 The ratio of CaO and CaO is 3.5:1 in a common quartz test tube and the test tube is placed in an SKL vertical tube sintering furnace (temperature is 1250 ° C) for 5 hours of purification. After the puri...

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Abstract

The invention discloses a blow molding method for preparing a columnar iron-based bulk amorphous alloy quartz tube by utilizing industrial grade raw materials. The blow molding method is realized through the following process: placing amorphous alloy with determined composition, mixed anhydrous B2O3 bulk and CaO powder into a quartz test tube together, and heating through a high temperature furnace for purification treatment; placing purified alloy into a specially-made quartz test tube, heating and melting the alloy by using a fire gun in an air atmosphere, wherein an alloy solution is located in a thick quartz test tube at the upper part of the specially-made quartz test tube; and introducing 1.5x10<5> Pa argon into the specially-made quartz test tube so that the alloy solution enters a thin quartz test tube at the lower part of the specially-made quartz test tube; inserting the quartz test tube into water quickly, and cooling the alloy solution rapidly to form columnar iron-based bulk amorphous alloy. The blow molding method disclosed by the invention is characterized in that the inert quartz test tube is taken as a container, which is beneficial to the formation of the bulk amorphous alloy; the use of the industrial grade raw materials and the preparation under air greatly reduce the production cost; and the method is easy and feasible.

Description

technical field [0001] The invention belongs to the technical field of bulk amorphous alloy preparation, and relates to a method for preparing columnar iron-based bulk amorphous alloy with industrial-grade raw materials. Background technique [0002] Atoms in the microstructure of amorphous alloys do not have long-range order, so compared with traditional crystalline alloy materials, they show many excellent properties, such as excellent mechanical properties and magnetic properties, strong corrosion resistance, and Unique photoelectric properties and so on, which make amorphous alloys show a wide range of application prospects. Since the 1960s, it has been one of the hot spots in the research of new materials. In the past two decades, through the arduous exploration of many scholars, the research on the preparation of bulk amorphous alloys has made many significant progress. A large number of Pd-based, Zr-based, La-based, Mg-based, Cu-based, Ti-based and Fe-based multi-co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02C22C1/00B22D27/04
Inventor 李强凌海波
Owner XINJIANG UNIVERSITY