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Preparation method of surface-oxidized beta-type medical zirconium alloy

A technology of surface oxidation and zirconium alloys, which is applied in the field of preparation of β-type medical zirconium alloys, can solve the problems of tissue inflammation, aggravate pain, and aggravate the loss of repair materials themselves, and achieve the effects of fast growth, enhanced overall performance, and good strength

Active Publication Date: 2017-09-08
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the abrasive particles of the material will be embedded in the tissue cells of the human body, which will cause tissue inflammation and aggravate people's pain
In addition, the abrasive particles are easily formed between the implant material and the implanted body to form three-body wear, which intensifies the loss of the repair material itself.

Method used

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  • Preparation method of surface-oxidized beta-type medical zirconium alloy
  • Preparation method of surface-oxidized beta-type medical zirconium alloy
  • Preparation method of surface-oxidized beta-type medical zirconium alloy

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Experimental program
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Effect test

Embodiment 1

[0038] The surface oxidized β-type medical zirconium alloy is prepared by the following method:

[0039] 1. Preparation of β-type zirconium alloy

[0040](1) Raw material preparation: composition and percentage of raw materials: the mass fraction of zirconium is 79.65%, and the mass fraction of niobium is 20.35%. (Materials correspond to 80% zirconium and 20% niobium in mole fraction, which is marked as Zr-20Nb) The purity of the raw materials is 99.9%, all of which are block samples, and the particle size is controlled below 2 cm. All sample surfaces were ground to remove surface scale prior to sample weighing.

[0041] (2) Raw materials are mixed, and the weighed raw materials are stirred and mixed evenly;

[0042] (3) Melting preparation: Use a non-consumable vacuum electric arc furnace for melting, first vacuumize, and the vacuum degree is controlled at 4.0×10 -3 ~6×10 -3 Pa; Pass in argon gas for washing to remove residual air, and on this basis, carry out vacuum dega...

Embodiment 2

[0048] The surface oxidized β-type medical zirconium alloy is prepared by the following method:

[0049] 1. Preparation of β-type zirconium alloy

[0050] (1) Raw material preparation: composition and percentage of raw materials: the mass fraction of zirconium is 77.76%, the mass fraction of niobium is 20.64%, and the mass fraction of titanium is 1.60%. (Materials correspond to 77% zirconium mole fraction, 20% niobium and 3% titanium, which is marked as Zr-20Nb-3Ti) The purity of raw materials is 99.9%, all of which are block samples, and the particle size is controlled at 2 cm or less. All sample surfaces were ground to remove surface scale prior to sample weighing.

[0051] (2) Raw materials are mixed, and the weighed raw materials are stirred and mixed evenly;

[0052] (3) Melting preparation: Use a non-consumable vacuum electric arc furnace for melting, first vacuumize, and the vacuum degree is controlled at 4.0×10 -3 ~6×10 -3 Pa; Pass in argon gas for washing to remo...

Embodiment 3

[0058] The surface oxidized β-type medical zirconium alloy is prepared by the following method:

[0059] 1. Preparation of β-type zirconium alloy

[0060] (1) Raw material preparation: composition and percentage of raw materials: the mass fraction of zirconium is 75.15%, the mass fraction of niobium is 21.04%, and the mass fraction of titanium is 3.81%. (The corresponding material corresponds to zirconium with a mole fraction of 73%, 20% niobium and 7% titanium, which is marked as Zr-20Nb-7Ti). 2 cm or less. All sample surfaces were ground to remove surface scale prior to sample weighing.

[0061] (2) Raw materials are mixed, and the weighed raw materials are stirred and mixed evenly;

[0062] (3) Melting preparation: Use a non-consumable vacuum electric arc furnace for melting, first vacuumize, and the vacuum degree is controlled at 4.0×10 -3 ~6×10 -3 Pa; Pass in argon gas for washing to remove residual air, and on this basis, carry out vacuum degassing, and the vacuum d...

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Abstract

The invention discloses a preparation method of a surface-oxidized beta-type medical zirconium alloy. The method comprises the following steps: ultrasonically washing the surface of a beta-type zirconium alloy material by sequentially using acetone and absolute ethyl alcohol, and drying after the surface is washed; heating the air to 550 to 750 DEG C in a furnace; putting the dried beta-type zirconium alloy in the furnace filled with hot air, and keeping the temperature for 30 to 90 minutes; and ensuring that the air pressure in the furnace is one standard atmosphere to form a surface oxidization layer with the thickness of 8 to 50 [mu]m on the surface of the alloy so as to obtain the surface-oxidized beta-type medical zirconium alloy. The alloy material obtained by the invention has the characteristics of abrasive resistance, corrosion resistance and the like; meanwhile, good plasticity and lower elastic modulus are maintained, and the requirement of clinical medicine to implantation materials can be met.

Description

technical field [0001] The invention belongs to the technical field of medical composite materials, and in particular relates to a preparation method of a surfaced β-type medical zirconium alloy. Background technique [0002] Due to its small specific gravity, high specific strength, low elastic modulus, corrosion resistance, excellent biocompatibility and processing formability, and rich resources, titanium alloy has developed into an ideal functional structure for surgical implants in recent years. Material. But its disadvantages are also obvious. As an implant material, its wear resistance is too poor. Titanium alloy is used as a material for dental implant nails or artificial bones. Since the sliding of implants and autologous organs is inevitable, the new sliding friction will destroy the passive film naturally formed by titanium alloy, and the material will form again. New corrosion and wear, combined with the above reasons, the surface of the material will become ro...

Claims

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Application Information

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IPC IPC(8): C23C8/12C22C16/00C22C1/02A61L27/04A61L27/50A61L27/30
Inventor 湛永钟张建峰甘夏霞叶海梅吴俊彦汤宏群杜再翊卢海滨
Owner GUANGXI UNIV