Erbium-base lorge-cube non-crystal alloy and making method

An amorphous alloy and bulk technology, which is applied in the field of erbium-based bulk amorphous alloy and its preparation, can solve the problem of rare rare earth-based amorphous alloy, and achieve the effects of low cost, broad application prospect and strong crystallization ability.

Inactive Publication Date: 2008-02-06
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are not many studies on rare earth-based amorphous alloys. my country is a country rich in rare earth element resources, so the development of rare earth-based amorphous alloys has broad application prospects.

Method used

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  • Erbium-base lorge-cube non-crystal alloy and making method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1. Erbium-based bulk amorphous alloy Er 36 Y 20 Al 24 Co 20 Preparation

[0024] After mixing the four components of Er, Y, Al and Co with a raw material purity of 99.9wt% or more (weight percentage) in a molar ratio of 36:20:24:20, the arc is in an argon atmosphere where titanium is adsorbed. The furnace is evenly mixed and smelted 5 times. After cooling, the master alloy ingot of Er-Y-Al-Co quaternary alloy is obtained; then the conventional metal mold casting method is used to re-melt the ingot, using the electric arc furnace The suction casting device sucks the master alloy melt into the water-cooled copper mold, and the composition is Er 36 Y 20 Al 24 Co 20 , A bulk amorphous alloy with a diameter of 8mm.

[0025] The X-ray diffraction (XRD) shown in Figure 1 shows that the alloy is a completely amorphous alloy.

[0026] Figure 2 shows Er 36 Y 20 Al 24 Co 20 The thermal analysis (DTA) diagram of the erbium-based bulk amorphous alloy, as can be seen from the dia...

Embodiment 2

[0027] Example 2. Erbium-based bulk amorphous alloy Er 46 Y 10 Al 24 Co 20 Preparation

[0028] After preparing the four components of Er, Y, Al and Co with a raw material purity of 99.9wt% or more (weight percentage) at a molar ratio of 46:10:24:20, in an electric arc furnace with an argon atmosphere adsorbed by titanium Mix uniformly and repeatedly smelt 6 times, and after cooling, the master alloy ingot of Er-Y-Al-Co quaternary alloy is obtained; then the conventional metal mold casting method is used to re-melt the ingot, using suction casting in the electric arc furnace Device, suck the master alloy melt into the water-cooled copper mold to get the composition Er 46 Y 10 Al 24 Co 20 , A bulk amorphous alloy with a diameter of 5mm.

[0029] The X-ray diffraction (XRD) shown in Figure 1 shows that the alloy is a completely amorphous alloy.

[0030] Figure 3 shows Er 46 Y 10 Al 24 Co 20 The thermal analysis (DSC and DTA) diagrams of erbium-based bulk amorphous alloys can be seen...

Embodiment 3

[0031] Example 3: Erbium-based bulk amorphous alloy Er 50 Y 6 Al 24 Co 20 Preparation

[0032] After preparing the four components of Er, Y, Al and Co with a raw material purity of 99.9wt% or more (weight percentage) at a molar ratio of 50:6:24:20, in an electric arc furnace with an argon atmosphere adsorbed by titanium Mix uniformly and repeatedly smelt 5 times. After cooling, the master alloy ingot of Er-Y-Al-Co quaternary alloy is obtained; then the conventional metal mold casting method is used to re-melt the ingot and use the suction casting in the electric arc furnace Device, suck the master alloy melt into the water-cooled copper mold to get the composition Er 50 Y 6 Al 24 Co 20 , A bulk amorphous alloy with a diameter of 5mm.

[0033] The X-ray diffraction (XRD) shown in Figure 1 shows that the alloy is a completely amorphous alloy.

[0034] Figure 4 shows Er 50 Y 6 Al 24 Co 20 The thermal analysis (DSC and DTA) diagrams of erbium-based bulk amorphous alloys can be seen fro...

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Abstract

This invention relates to the Er base big non-crystal alloy and its preparation method, which takes Er as the main component and the composition can be expressed by the following formula: EraYbAlcXd, in which, 36<=a<=70, 0<=b<=20, 10<=c<=28, 6<=d<=20, a+b+c+d=100 and element X is Co or Cu, the purities of Er, Y, Al, Co and Cu are not less than 99.9wt% and the alloy includes at least 50% volume percentage of non-crystal phase. The preparation method includes: mixing Er, Y and X in terms of the above mentioned proportion to be smelted repeatedly for many times in an arc furnace under Ti adsorbed Ar atmosphere to get a mother alloy cast ingot, which is smelted again to be absorbed into a water-cooled Cu mould by an cast-absorbing device in the arc furnace.

Description

Technical field [0001] The invention relates to the field of amorphous alloys or metallic glasses, and specifically relates to an erbium-based bulk amorphous alloy and a preparation method thereof. Background technique [0002] Usually, metals or alloys will crystallize to form crystals when they are cooled from a liquid state. It has been found that certain metals or alloys will maintain an extremely viscous state in the liquid state during the solidification process when the cooling rate is fast enough, thereby inhibiting crystallization and obtaining amorphous metals or alloys. In 1960, Duwez et al. prepared amorphous Au-Si alloys by means of rapid melt cooling. In the 1970s, they developed a practical single-roll quenching technique for preparing amorphous ribbons. During the 30 years from the early 1960s to the end of the 1980s, through research, people knew that the preparation of amorphous alloys requires 10 5 Cooling rate above K / s. [0003] Amorphous alloys prepared in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/00C22C1/03B22D7/00
Inventor 魏育新赵德乾汪卫华潘明祥
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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