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A new type of low elastic modulus medical zirconium alloy and its design method

A technology with low elastic modulus and elastic modulus, applied in the field of medical biomaterials, can solve the problems of large workload and experimental error, not considering the interaction between elements, complicated operation, etc., to achieve easy smelting, large reserves, economical high effect

Active Publication Date: 2020-03-24
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of them have disadvantages such as complicated operation, large workload and experimental error, and no consideration of the interaction between elements.

Method used

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  • A new type of low elastic modulus medical zirconium alloy and its design method
  • A new type of low elastic modulus medical zirconium alloy and its design method
  • A new type of low elastic modulus medical zirconium alloy and its design method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A design method for a novel medical zirconium alloy with a low elastic modulus, the specific implementation steps of which include:

[0047] (1) Based on the alloy phase diagram and alloy strengthening mechanism, select Sn, Cu, and Nb as doping elements to design medical zirconium alloys.

[0048] (2) Composition design of medical zirconium alloys is carried out by using quadratic regression orthogonal rotation combination design, taking the elastic modulus of the alloy as the test index, and taking the contents of tin, copper and niobium as the test factors, the three The factor levels are coded, and the experimental plan is obtained through the quadratic regression orthogonal rotation combination design calculation. The composition ratio of the samples prepared in this test, that is, the factor variation range, is shown in Table 1, and the test factor level coding table is shown in Table 2. According to the above data analysis and calculation, the implementation plan ...

Embodiment 2

[0076] According to the composition design method of Example 1, the atomic percentages of the raw materials in Example 2 are determined to be: 0.6 at.% of tin, 4.6 at.% of copper, 12 at.% of niobium, and 82.8 at.% of zirconium.

[0077] A preparation method of a novel medical zirconium alloy with a low elastic modulus, the specific operation steps are as follows:

[0078] (1) Weighing of raw materials: the purity of tin, copper, niobium and zirconium in each component of the medical zirconium alloy is ≥99.9%. The atomic percent of each alloy element is converted into a weight percent to obtain a weighing ratio scheme. Before weighing the samples, the oxide scales on the surface of the four metal blocks of zirconium, tin, copper and niobium were firstly ground off, and then the metal blocks were clamped into small pieces by hydraulic forceps to facilitate weighing. % by weight of 10g of raw material is taken for subsequent use.

[0079] (2) Preparations before smelting: Befor...

Embodiment 3

[0084]According to the composition design method in Example 1, the atomic percentages of the raw materials in Example 3 are determined to be: tin 0.6 at.%, copper 3.4 at.%, niobium 12 at.%, zirconium 84 at.%.

[0085] A preparation method of a novel medical zirconium alloy with a low elastic modulus, the specific operation steps are as follows:

[0086] (1) Weighing of raw materials: the purity of tin, copper, niobium and zirconium in each component of the medical zirconium alloy is ≥99.9%. The atomic percent of each alloy element is converted into a weight percent to obtain a weighing ratio scheme. Before weighing the samples, the oxide scales on the surface of the four metal blocks of zirconium, tin, copper and niobium were firstly ground off, and then the metal blocks were clamped into small pieces by hydraulic forceps to facilitate weighing. % by weight of 10g of raw material is taken for subsequent use.

[0087] (2) Preparations before smelting: Before smelting zirconiu...

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Abstract

The invention discloses low elasticity modulus novel medical zirconium alloy and a designing method thereof. The low elasticity modulus novel medical zirconium alloy disclosed by the invention is prepared from the raw materials in atomic percent: 0.1at.% to 3at.% of tin, 3at.% to 5at.% of copper, 0.1at.% to 15at.% of niobium and the balance of zirconium. The designing method of the low elasticitymodulus novel medical zirconium alloy comprises the steps: utilizing a quadratic regression orthogonal rotation combination design to perform ingredient design to obtain an experiment scheme; then converting atomic percent of all alloy elements in the scheme into weight percentage to obtain a weight ratio scheme; performing alloy preparation, a compression experiment and further phase analysis anda microscopic structure observing experiment according to the weight ratio scheme obtained from the combination design; then utilizing SPSS to analyze experiment results and finally obtaining a mathematic model of alloy performance and alloy elements. The zirconium alloy designed out according to the mathematic model has the advantages of low elastic modulus, moderate compression strength and yield strength, high elastic energy and ability in meeting a requirement of clinical medicine to an implant material.

Description

technical field [0001] The invention belongs to the field of medical biomaterials, and in particular relates to the composition design and preparation method of low elastic modulus medical zirconium alloys. Background technique [0002] In recent years, with the improvement of people's living standards and the development of science and technology, biomaterials have developed rapidly, and the research on human hard tissue replacement materials has become more and more in-depth. To be applied, these medical implant materials must meet some basic performance conditions, such as good biocompatibility, corrosion resistance in body fluids, high mechanical strength, good wear resistance and low elastic modulus Wait. Among them, low elastic modulus is very important, it is not only related to the life and service of medical implant materials, but also affects human health. Most of the current biometallic materials, such as titanium and titanium alloys (55-120GPa), have a higher e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C16/00C22C1/02
CPCC22C1/02C22C16/00
Inventor 湛永钟汤宏群甘夏霞韩峰丁晓龙李吉东郭付达张嘉凯
Owner GUANGXI UNIV
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