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Ytterbium-based bulk amorphous alloy and preparation method thereof

An amorphous alloy and bulk technology, which is applied in the field of ytterbium-based bulk amorphous alloy and its preparation, can solve problems such as limiting the industrial application of amorphous materials, and achieves low critical cooling rate, strong crystallization ability and simple preparation process. Effect

Inactive Publication Date: 2011-06-15
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This greatly limits the industrial application of amorphous materials

Method used

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  • Ytterbium-based bulk amorphous alloy and preparation method thereof
  • Ytterbium-based bulk amorphous alloy and preparation method thereof
  • Ytterbium-based bulk amorphous alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1, ytterbium-based bulk amorphous alloy Yb 65 Zn 20 Mg 15 preparation of

[0030] After the three components of Yb, Zn and Mg with a raw material purity of more than 99.9wt.% (weight percentage) are prepared in a molar ratio of 65:20:15, the raw materials are placed in a quartz tube and placed in a high Frequency induction furnace. Use a vacuum pump to evacuate to 3.0×10 -3 Above Pa, after filling with an appropriate amount of high-purity argon, heat it with a high-frequency coil and small current until it melts. When the electromagnetic stirring is uniform, spray casting into the copper mold, you can get the composition of Yb 65 Zn 20 Mg 15 , a bulk amorphous alloy with a diameter of 1 mm.

[0031] like figure 1 The X-ray diffraction (XRD) shown, it can be seen that the alloy is a completely amorphous alloy.

[0032] figure 2 for Yb 65 Zn 20 Mg 15 The thermal analysis (DSC) diagram of the ytterbium-based bulk amorphous alloy, as can be seen fr...

Embodiment 2

[0033] Embodiment 2, ytterbium-based bulk amorphous alloy Yb 64 Zn 20 Mg 15 Cu 1 preparation of

[0034] After the four components of Yb, Zn, Mg and Cu with a raw material purity of more than 99.9wt.% (weight percent) are prepared in a molar ratio of 64:20:15:1, the raw materials are placed in a quartz tube and placed Into the high frequency induction furnace. Use a vacuum pump to evacuate to 3.0×10 -3Above Pa, after filling with an appropriate amount of high-purity argon, heat it with a high-frequency coil and small current until it melts. When the electromagnetic stirring is uniform, spray casting into the copper mold, you can get the composition of Yb 64 Zn 20 Mg 15 Cu 1 , a bulk amorphous alloy with a diameter of 2 mm.

[0035] like image 3 The X-ray diffraction (XRD) shown shows that the alloy is a completely amorphous alloy.

[0036] Figure 4 for Yb 64 Zn 20 Mg 15 Cu 1 The thermal analysis (DSC) diagram of the ytterbium-based bulk amorphous alloy, as c...

Embodiment 3

[0037] Embodiment 3, ytterbium-based bulk amorphous alloy Yb 58 Zn 20 Mg 15 Cu 7 preparation of

[0038] After the four components of Yb, Zn, Mg and Cu with a raw material purity of more than 99.9wt% (weight percentage) are prepared in a molar ratio of 58:20:15:7, the raw materials are placed in a quartz tube and put into High frequency induction furnace. Use a vacuum pump to evacuate to 3.0×10 -3 Above Pa, after filling with an appropriate amount of high-purity argon, heat it with a high-frequency coil and small current until it melts. When the electromagnetic stirring is uniform, spray casting into the copper mold, you can get the composition of Yb 58 Zn 20 Mg 15 Cu 7 , a bulk amorphous alloy with a diameter of 2 mm.

[0039] like image 3 The X-ray diffraction (XRD) shown shows that the alloy is a completely amorphous alloy.

[0040] Figure 5 for Yb 58 Zn 20 Mg 15 Cu 7 The thermal analysis (DSC) diagram of the ytterbium-based bulk amorphous alloy, as can b...

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Abstract

The invention relate to an ytterbium-based bulk amorphous alloy and a preparation method thereof. The alloy takes ytterbium as a main component and the components thereof can be shown in the following formula: YbaZnbMgcXd, wherein X is a transition metal element, such as Fe, Cu, Al and the like; subscripts a, b, c and d are atom percentage; a is more than or equal to 50 and less than or equal to 70; b is more than or equal to 5 and less than or equal to 30; c is more than or equal to 5 and less than or equal to 30; d is more than or equal to 0 and less than or equal to 15; and a+b+c+d=100. The ytterbium-based bulk amorphous alloy has the characteristics of the high glass forming capacity, the strong capacity of inhibiting crystallization, capacity of being prepared into a larger size at alower cooling speed and the like, and has wide application prospect.

Description

technical field [0001] The invention belongs to the field of amorphous alloys or metallic glasses, and in particular relates to a ytterbium-based bulk amorphous alloy and a preparation method thereof. Background technique [0002] Typically, metals or alloys crystallize to form crystals when cooled from a liquid state. It has been found that certain metals or alloys, when the cooling rate is fast enough, will maintain an extremely viscous state in the liquid state during the solidification process, thereby inhibiting crystallization and obtaining an amorphous metal or alloy. In 1960, Duwez et al. prepared amorphous Au-Si alloy by rapid cooling of the melt. In the 1970s, they developed a practical single-roll rapid cooling technology to prepare amorphous thin strips. During the 30 years from the beginning of the 1960s to the end of the 1980s, it was known that the preparation of amorphous alloys required 10 5 Cooling rate above K / s. [0003] Amorphous alloys prepared in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/00C22C1/02
Inventor 王军强白海洋汪卫华赵德乾潘明祥
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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