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Nickel-free low-copper zirconium-based bulk amorphous alloy and preparation method thereof

An amorphous alloy, copper-zirconium-based technology, applied in the field of bulk amorphous alloy materials, to achieve the effects of reduced potential biological toxicity, low copper content, and good mechanical biocompatibility

Inactive Publication Date: 2014-07-30
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the copper content of zirconium-based amorphous alloys currently developed with high amorphous-forming ability is mostly above 20 at.%. Studies have shown that alloys with high copper content will precipitate high-concentration copper ions under corrosion, which has potential biological toxicity

Method used

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  • Nickel-free low-copper zirconium-based bulk amorphous alloy and preparation method thereof
  • Nickel-free low-copper zirconium-based bulk amorphous alloy and preparation method thereof
  • Nickel-free low-copper zirconium-based bulk amorphous alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Zr with a diameter of 5 mm was prepared by copper mold casting 62.5 Ti 2.5 Al 10 Fe 10 Cu 15 bulk amorphous alloy

[0033] Step 1: Ingredients

[0034] Press Zr 62.5 Ti 2.5 Al 10 Fe 10 Cu 15 The nominal composition weighs raw materials;

[0035] Wherein, the mass percentage purity of zirconium (Zr) is 99.8%; the mass percentage purity of titanium (Ti) is 99.99%; the mass percentage purity of copper (Cu) is 99.98%; the mass percentage purity of iron (Fe) is 99.8%; The mass percent purity of aluminum (Al) is 99.9%.

[0036] Step 2: Smelting Zr 62.5 Ti 2.5 Al 10 Fe 10 Cu 15 Master Alloy

[0037] Put the raw material weighed in step 1 into the vacuum melting furnace;

[0038] Adjust the vacuum degree of the vacuum chamber of the vacuum smelting furnace to 5×10 -3 Pa, and then filled with high-purity argon to make the vacuum of the vacuum chamber to 0.5×10 5 Pa;

[0039] After arc melting for 240s, the arc is broken to form the first alloy ingot;

[004...

Embodiment 2

[0054] This embodiment adopts copper mold casting method to prepare the Zr that diameter is 7mm 62.5 Ti 2.5 Al 10 Fe 7.5 Cu 12.5 Ag 5 bulk amorphous alloy.

[0055] Step 1: Ingredients

[0056] Press Zr 62.5 Ti 2.5 Al 10 Fe 7.5 Cu 12.5 Ag 5 The nominal composition weighs raw materials;

[0057] Wherein, the mass percentage purity of zirconium (Zr) is 99.8%; the mass percentage purity of titanium (Ti) is 99.99%; the mass percentage purity of copper (Cu) is 99.98%; the mass percentage purity of iron (Fe) is 99.8%; The mass percentage purity of aluminum (Al) is 99.9%; the mass percentage purity of silver (Ag) is 99.9%.

[0058] Step 2: Smelting Zr 62.5 Ti 2.5 Al 10 Fe 7.5 Cu 12.5 Ag 5 Master Alloy

[0059] Put the raw material weighed in step 1 into the vacuum melting furnace;

[0060] Adjust the vacuum degree of the vacuum chamber of the vacuum smelting furnace to 3×10 -3 Pa, and then filled with high-purity argon to make the vacuum of the vacuum chamber to...

Embodiment 3

[0072] This embodiment adopts copper mold casting method to prepare the Zr that diameter is 7mm 62.5 Ti 2.5 Al 10 Fe 7.5 Cu 12.5 PD 5 bulk amorphous alloy.

[0073] Step 1: Ingredients

[0074] Press Zr 62.5 Ti 2.5 Al 10 Fe 7.5 Cu 12.5 PD 5 The nominal composition weighs raw materials;

[0075]Wherein, the mass percentage purity of zirconium (Zr) is 99.8%; the mass percentage purity of titanium (Ti) is 99.99%; the mass percentage purity of copper (Cu) is 99.98%; the mass percentage purity of iron (Fe) is 99.8%; The mass percent purity of aluminum (Al) is 99.9%; the mass percent purity of palladium (Pd) is 99.95%.

[0076] Step 2: Smelting Zr 62.5 Ti 2.5 Al 10 Fe 7.5 Cu 12.5 PD 5 Master Alloy

[0077] Put the raw material weighed in step 1 into the vacuum melting furnace;

[0078] Adjust the vacuum degree of the vacuum chamber of the vacuum smelting furnace to 4×10 -3 Pa, and then filled with high-purity argon to make the vacuum of the vacuum chamber to 0....

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Abstract

The invention discloses a nickel-free low-copper zirconium-based bulk amorphous alloy and a preparation method thereof. The nickel-free low-copper zirconium-based bulk amorphous alloy comprises the following main components in atomic percentage: 60 to 70 percent of Zr, 1 to 2.5 percent of Ti, 0 to 2.5 percent of Nb, 7.5 to 12.5 percent of Al, 5 to 15 percent of Fe, 5 to 15 percent of Cu, 0 to 10 percent of Ag and 0 to 10 percent of Pd. The bulk amorphous alloy has high glass forming capacity, and a bulk amorphous alloy with the maximum critical diameter phi of 14mm can be prepared by a copper mold casting method; the bulk amorphous alloy does not contain metal element nickel, has the copper element content of less than 15 percent, and has a small copper ion precipitation quantity when serving as a biological material to be implanted in a body, and the potential biotoxicity is greatly reduced; and the bulk amorphous alloy has high biomechanical compatibility, low elastic modulus and high plasticity. Therefore, the series of amorphous alloy has wide application prospect in the fields such as structural materials, biomaterials, medical devices and the like.

Description

technical field [0001] The invention relates to a bulk amorphous alloy material, in particular to a nickel-free low-copper zirconium-based bulk amorphous alloy and a preparation method thereof. Background technique [0002] Medical metal materials are an important branch of biomedical materials, which are widely used in biological implants to repair or replace damaged biological tissues. Currently commonly used medical metal materials are: titanium and titanium alloys, cobalt-chromium alloys, medical stainless steel, etc. However, when these materials are used as implant materials, especially orthopedic implant materials, they still face stress shielding effects due to high elastic modulus of materials, granular diseases due to wear products, and failure due to corrosion and fatigue. question. Zirconium-based amorphous alloys have low elastic modulus, high strength, high hardness, high fracture toughness and excellent corrosion resistance, so they have received extensive a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/10
Inventor 张涛周琨张磊磊逄淑杰
Owner BEIHANG UNIV
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