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A kind of biomedical high-entropy alloy and preparation method thereof

A high-entropy alloy, biomedical technology, applied in the field of alloy materials and its preparation, can solve the problems of poor corrosion resistance and wear resistance, and achieve excellent mechanical properties, excellent corrosion resistance and wear resistance, excellent corrosion resistance and The effect of wear properties

Active Publication Date: 2019-07-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention solves the technical problems of poor corrosion resistance and wear resistance of existing biomedical materials, and provides a biomedical high-entropy alloy and its preparation method

Method used

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  • A kind of biomedical high-entropy alloy and preparation method thereof
  • A kind of biomedical high-entropy alloy and preparation method thereof
  • A kind of biomedical high-entropy alloy and preparation method thereof

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specific Embodiment approach 1

[0036] Specific Embodiment 1: In this embodiment, a biomedical high-entropy alloy is composed of six elements: Al, Co, Cr, Fe, Cu and Ti, and its composition is Al 0.75 FeCoCrCuTi 0.5 .

specific Embodiment approach 2

[0037] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the atomic percentage of each element in the alloy is: Al is 14.28%, Fe is 19.05%, Co is 19.05%, Cr is 19.05%, Cu is 19.05% %, Ti is 9.52%. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0038] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that: the method for preparing a stepped rod by using a biomedical high-entropy alloy described in specific embodiment one is: the one described in specific embodiment one A biomedical high-entropy alloy is put into a water-cooled copper crucible for multiple times of high-vacuum induction melting, and then the high-entropy alloy is dropped into a copper mold by dripping and cooled to obtain a stepped rod of the alloy. Others are the same as in the first or second embodiment.

[0039] This method will form a layer of thin shell produced by the solidification of the melt between the water-cooled copper crucible and the melt during the smelting process, which can avoid the contamination of the melt by the crucible, and the vacuum degree is high during the smelting process, thus reducing other The influence of impurity elements. In addition, it also has the advantages o...

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Abstract

The invention discloses a biomedical high-entropy alloy and a preparation method of the alloy, and relates to the field of alloy materials and preparation of the alloy materials. The technical problemthat an existing biomedical material is poor in corrosion resistance and wear resistance is solved. The high-entropy alloy is prepared from Al, Co, Cr, Fe, Cu and Ti and has the ingredients being Al0.75FeCoCrCuTi0.5. The method comprises the steps that an aluminum foil, an iron block, a cobalt block, a chrome sheet, a copper sheet and a titanium sheet are weighed, placed into a vacuum arc furnaceto be smelted repeatedly and cooled, and a high-entropy alloy ingot is obtained; the high-entropy alloy ingot is placed into a water-cooling copper crucible to be subjected to repeated high-vacuum induction smelting, the alloy is dropped into a copper in a drop injection mode and cooled, and a ladder bar is obtained. The material has the good biocompatibility and further has more excellent corrosion resistance and wear resistance, and the prepared high-entropy alloy is used for biomedical materials.

Description

technical field [0001] The invention relates to the field of alloy materials and their preparation. Background technique [0002] Biomaterials, also known as biomedical materials, are a class of materials that are used for medical purposes and interact with living tissues and blood to improve human life quality and prolong human life. They are mainly used for making human organs, in vivo or in vitro applications. The general term for a large class of materials such as medical devices, artificial organ substitutes, and support devices. Biomedical metal materials are metals or alloys used as biomedical materials, also known as surgical metal materials or medical metal materials, which are a type of inert materials. This type of material has high mechanical strength and fatigue resistance, and is the most widely used load-bearing implant material in clinical practice. At present, the medical metal materials that have been used clinically mainly include stainless steel, titani...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/02C22C1/02
CPCC22C1/02C22C30/02
Inventor 黄永江安超范洪波宁志良曹福洋邢大伟孙剑飞
Owner HARBIN INST OF TECH