High-wear-resistance and high-tenacity medical zirconium alloy and preparation method and application thereof

A zirconium alloy, high-strength technology, applied in the field of high-performance medical alloy materials, to achieve the effect of convenient operation, simple processing process and high bonding strength

Active Publication Date: 2015-08-05
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention proposes the use of plastically deformed zirconium-niobium alloy combined with high-temperature oxidation process to achieve the comprehensive properties of high surface hardness, high wear resistance, and overall high strength and toughness. So far, there is no relevant literature report

Method used

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  • High-wear-resistance and high-tenacity medical zirconium alloy and preparation method and application thereof
  • High-wear-resistance and high-tenacity medical zirconium alloy and preparation method and application thereof
  • High-wear-resistance and high-tenacity medical zirconium alloy and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Step 1: Plastic deformation treatment of zirconium-niobium alloy

[0044] A plate-shaped 95.8Zr-2.1Nb-2.1Hf zirconium-niobium alloy sample (commercially available) with a thickness of 10mm was rolled at room temperature by a twin-roll mill, with a deformation of about 0.4mm per pass, and rolled several times until the thickness was about 4mm , so that the amount of plastic deformation is 60%.

[0045] Step 2: Surface pretreatment of plastically deformed zirconium-niobium alloy

[0046] Use 180# to 2000# sandpaper to grind the plastically deformed zirconium-niobium alloy, then mechanically polish it, then immerse it in acetone and alcohol and clean it with an ultrasonic cleaner for 30 minutes to remove surface oil, and finally dry the surface deal with.

[0047] Step 3: High-temperature oxidation treatment of plastically deformed zirconium-niobium alloy

[0048] Put the surface-pretreated zirconium-niobium alloy in a resistance furnace, heat up for oxidation treatment i...

Embodiment 2

[0056] Step 1: Plastic deformation treatment of zirconium-niobium alloy

[0057] A plate-shaped 95.8Zr-2.1Nb-2.1Hf zirconium-niobium alloy sample (commercially available) with a thickness of 10mm was subjected to room temperature rolling treatment by a twin-roll mill to make the plastic deformation amount to 65%.

[0058] Step 2: Surface pretreatment of plastically deformed zirconium-niobium alloy

[0059] Use 180# to 2000# sandpaper to grind the plastically deformed zirconium-niobium alloy, then mechanically polish it, then immerse it in acetone and alcohol and clean it with an ultrasonic cleaner for 30 minutes to remove surface oil, and finally dry the surface deal with.

[0060] Step 3: High-temperature oxidation treatment of plastically deformed zirconium-niobium alloy

[0061] Put the surface-pretreated zirconium-niobium alloy in a resistance furnace, heat up for oxidation treatment in air environment, and the oxidation process conditions are as follows:

[0062] Oxida...

Embodiment 3

[0069] Step 1: Plastic deformation treatment of zirconium-niobium alloy

[0070] A plate-shaped 91.8Zr-8.2Nb zirconium-niobium alloy sample (commercially available) with a thickness of 10 mm was rolled at room temperature by means of a twin-roll rolling mill, so that the plastic deformation amount was 55%.

[0071] Step 2: Surface pretreatment of plastically deformed zirconium-niobium alloy

[0072] Use 180# to 2000# sandpaper to grind the plastically deformed zirconium-niobium alloy, then mechanically polish it, then immerse it in acetone and alcohol and clean it with an ultrasonic cleaner for 30 minutes to remove surface oil, and finally dry the surface deal with.

[0073] Step 3: High-temperature oxidation treatment of plastically deformed zirconium-niobium alloy

[0074] Put the surface-pretreated zirconium-niobium alloy in a resistance furnace, heat up for oxidation treatment in air environment, and the oxidation process conditions are as follows:

[0075] Oxidation eq...

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Abstract

The invention belongs to the technical field of high-performance medical alloy materials and particularly relates to a medical zirconium alloy high in surface wear resistance and integral tenacity and a preparation method and application thereof. The surface of the medical zirconium alloy is provided with a micron-level thick oxide ceramic layer is mainly composed of nonoclinic-system zirconia and a small amount of tetragonal-system zirconia; the matrix of the medical zirconium alloy is zirconium alloy, which is specifically composed of, by weight percentage, 76.5-100 wt.% of Zr, 0-19 wt.% of Nb, 0-4.5 wt.% of Hf and inevitable trace impurities as balance; an oxygen-enriched transition layer is arranged between the oxide ceramic layer and the matrix alloy, namely, oxygen is dissolved inside the matrix to form zirconium-oxygen solid solution. The high-wear-resistance and high-tenacity medical zirconium alloy combines the plastic deformation technology and the high-temperature oxidation technology and greatly improves the surface hardness, the wear resistance and the alloy strength, thereby having a broad application prospect in biomedicine, particularly in the aspect of biomedical implants.

Description

technical field [0001] The invention belongs to the technical field of high-performance medical alloy materials, and in particular relates to a medical zirconium alloy with high surface wear resistance and overall high strength and toughness, as well as its preparation method and application. Background technique [0002] Zirconium alloys have good mechanical properties and excellent corrosion resistance, and are widely used in the fields of nuclear industry, petrochemical industry and medicine. Recently, zirconium-niobium alloys containing a certain amount of Nb have been developed. This type of zirconium alloy contains non-toxic elements, good biocompatibility, and excellent comprehensive mechanical properties. It can be used as a good medical implant material. Therefore, in order to better meet the more stringent requirements of the human body for joint prostheses, zirconium-niobium alloys with excellent comprehensive mechanical properties have become a research hotspot f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C16/00C22F1/18
Inventor 杨超周林菊李元元王芬张卫文肖志瑜陈维平
Owner SOUTH CHINA UNIV OF TECH
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