Nickel-free Zr-based bulk amorphous alloy with excellent biocompatibility as well as preparation method and application of nickel-free Zr-based bulk amorphous alloy

Abstract

The invention discloses a nickel-free Zr-based bulk amorphous alloy with excellent biocompatibility and a preparation method and application thereof, and belongs to the technical field of amorphous alloy materials. The alloy comprises the following chemical components in percentage by atom: 50.6 to 61 percent of Zr, 15.3 to 22.1 percent of Al, 23.5 to 32 percent of Co and 0.01 to 6 percent of Ag. The alloy does not contain cytotoxic elements such as Y, Ni and the like. After the alloy is prepared into a master alloy ingot through vacuum electric arc melting, the master alloy ingot is prepared into a rod-shaped sample through a vacuum suction casting mold, and the minimum amorphous forming size reaches phi 6 mm. The alloy is excellent in mechanical property and shows good corrosion resistance and biocompatibility, and the biocompatibility is better than that of TC4 titanium alloy. Industrial-grade sponge Zr is used as an alloy raw material, the manufacturing cost is low, the manufacturing capacity is excellent, and the alloy has wide application prospects in the biomedical field.

Description

technical field [0001] The invention relates to the technical field of amorphous alloy materials, in particular to a nickel-free Zr-based bulk amorphous alloy with excellent biocompatibility, a preparation method and application thereof. Background technique [0002] Amorphous alloys, also known as metallic glasses, have a special microstructure of long-range disorder and short-range order. In terms of performance, amorphous alloys have the characteristics of high strength, high elasticity, and high hardness. A major disadvantage of amorphous alloys, however, is their low formability. Its manufacturing process requires the molten alloy liquid to be cooled to room temperature at a very high speed, so as to retain the disordered state of the liquid. When the cooling rate is slightly low, it is possible to crystallize the alloy and cannot form pure amorphous. In addition, the atmosphere of the furnace chamber is also an important factor affecting the manufacture of amorphous...

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Problems solved by technology

However, it has been criticized that most of the currently studied Zr-based amorphous alloys contain elements such as Ni and Y that are considered to be cytotoxic, and long-term implantation may cause physiological effects on the human body: there is evidence that Ni can cause dermatitis, low oral Dose studies have shown that Ni can cause a reduction in growth rate and reproductive capacity in animals

Parenteral administration of Ni complexes through inhalation, intravenous and intramuscular can cause Ni to cause cancer; while most rare earth elements have intraosseous accumulation effects, animal experiments on Y elements have proved that long-term intake of Y elements will damage liver and lung function

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