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Biomedical TiNbSn-HA composite material with low elastic modulus and preparation method of biomedical TiNbSn-HA composite material

A low elastic modulus, biomedical technology, applied in the field of composite materials and their preparation, can solve problems such as implant shedding, elastic modulus mismatch, stress shielding, etc., and achieve low elastic modulus, excellent compressive strength and compression. Effects of elastic modulus, good biocompatibility and bioactivity

Inactive Publication Date: 2014-12-10
HARBIN INST OF TECH
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Problems solved by technology

[0003] The invention aims to solve the problem that the elastic modulus of the existing titanium alloy / HA composite material is much higher than that of the human bone, and the phenomenon of "stress shielding" easily caused by the mismatch of the elastic modulus after implantation in the body, thus causing the implant to fall off problem, and provide a low elastic modulus biomedical TiNbSn-HA composite material and its preparation method

Method used

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  • Biomedical TiNbSn-HA composite material with low elastic modulus and preparation method of biomedical TiNbSn-HA composite material
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  • Biomedical TiNbSn-HA composite material with low elastic modulus and preparation method of biomedical TiNbSn-HA composite material

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specific Embodiment approach 1

[0015] Embodiment 1: A low elastic modulus biomedical TiNbSn-HA composite material described in this embodiment, a low elastic modulus biomedical TiNbSn-HA composite material consists of 34.0% to 37.0% by weight of Nb, 2.0%-5.0% of Sn, 5%-20.0% of HA and the balance of Ti are prepared.

[0016] The beneficial effects of this embodiment are: the low elastic modulus titanium alloy / HA composite material of this embodiment is a TiNbSn-HA composite material, and the composite material belongs to the composite material with β-type titanium alloy as the matrix. The low elastic modulus biomedical TiNbSn-HA composite material of this embodiment has a compressive strength of 830MPa to 880MPa and an elastic modulus of 20Gpa to 30Gpa, exhibiting excellent compressive strength and compressive elastic modulus, which are comparable to the elastic modulus of natural human bones. Therefore, the TiNbSn-HA composite material prepared in this embodiment not only has a lower elastic modulus but al...

specific Embodiment approach 2

[0018] Specific embodiment 2: The preparation method of a low elastic modulus biomedical TiNbSn-HA composite material described in this embodiment is specifically carried out according to the following steps:

[0019] 1. Weighing: 34.0% to 37.0% by weight of Nb, 2.0% to 5.0% of Sn, 5.0% to 20.0% of HA and the balance as Ti, weigh Nb powder, Sn powder and nano HA powder respectively and Ti powder as raw materials;

[0020] 2. Preparation of mixed powder: Under an alcohol protective atmosphere, the raw materials weighed in step 1 were ball-milled at a low speed and dried to obtain a uniform mixed powder;

[0021] 3. Preparation of nanocomposite powder: Under the condition of argon protection, the uniformly mixed powder obtained in step 2 is subjected to high-speed ball milling to obtain a composite powder with a nanostructure;

[0022] 4. Preparation of high-density composite material block: After compacting the composite powder with nanostructure obtained in step 3 in a graphi...

specific Embodiment approach 3

[0027] Specific embodiment three: the difference between this embodiment and specific embodiment two is: in step one, by weight percentage, be 35.0% Nb, 2.5% Sn, 15.0% HA and the balance are Ti, take Nb powder, Sn powder, nano HA powder and Ti powder are used as raw materials. Others are the same as in the second embodiment.

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Abstract

The invention discloses a biomedical TiNbSn-HA composite material with low elastic modulus and a preparation method of the biomedical TiNbSn-HA composite material, relating to a composite material and a preparation method thereof and mainly solving the problem of implant falling caused by a stress shielding phenomenon easily generated because the elastic modulus of the traditional titanium alloy / HA composite material is far higher than that of a human bone and the elastic modulus of the traditional titanium alloy / HA composite material is not matched with that of the human bone after the traditional titanium alloy / HA composite material is implanted in a human body. The method comprises the steps of firstly, weighing; secondly, preparing mixed powder; thirdly, preparing composite nanopowder; and fourthly, preparing a high-density composite material block to obtain the biomedical TiNbSn-HA composite material with the low elastic modulus. The invention discloses the biomedical TiNbSn-HA composite material with low elastic modulus and the preparation method of the biomedical TiNbSn-HA composite material.

Description

technical field [0001] The invention relates to composite materials and methods for their preparation. Background technique [0002] With the improvement of medical level, the requirements for mechanical properties, biocompatibility and biological activity of implanted biomedical materials for human body are getting higher and higher. Since products made from a single biomaterial cannot well meet clinical applications, it has become a new research direction for biomedical materials to synthesize biomaterials with different advantages into biomedical composite materials using reasonable technology. Ti alloy-hydroxyapatite (hereinafter referred to as HA) composite material has good mechanical properties, corrosion resistance and biocompatibility characteristics of Ti alloy, and has good biological activity characteristics of HA bioceramics, and has become a very competitive Biomedical composites. However, at present, titanium alloy / HA composite materials are mostly based on ...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C30/04C22C1/04
Inventor 王晓鹏陈玉勇孔凡涛徐丽娟肖树龙
Owner HARBIN INST OF TECH
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