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Preparation method for porous nickel titanium/hydroxyapatite composite material

A hydroxyapatite and composite material technology is applied in the field of preparation of porous nickel-titanium/hydroxyapatite composite materials, which can solve the problems of coating peeling, inability of HA coating to penetrate uniformly, interface corrosion, etc. Attachment, eliminate stress-shielding effect, increase bonding strength effect

Active Publication Date: 2016-03-16
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for the NiTi alloy with excellent interconnected porous structure, the HA coating prepared by the above method often cannot penetrate into the pores uniformly. If the above material is implanted into the human body, the body fluid is easy to mechanically bond with the substrate along the coating. The cracks penetrate into the interface, causing the interface corrosion coating to peel off

Method used

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  • Preparation method for porous nickel titanium/hydroxyapatite composite material
  • Preparation method for porous nickel titanium/hydroxyapatite composite material
  • Preparation method for porous nickel titanium/hydroxyapatite composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The preparation method of the porous nickel-titanium / hydroxyapatite composite material described in this embodiment specifically includes the following steps:

[0030] (1) Weighing: According to the mass percentage of 58.8% Ni and 41.20% Ti, respectively weigh the Ti metal powder with a purity of 99.9% and a particle size of 45 μm and the Ni metal powder with a purity of 99.5% and a particle size of 75 μm;

[0031] (2) Preparation of alloy raw material powder: put the metal powder weighed in step (1) into the ball mill tank of a ball mill, vacuumize to 6Pa, and then ball mill and mix the powder for 10 hours to obtain mixed Ni-Ti metal powder;

[0032] (3) Weighing: According to the mass percentage of mixed Ni-Ti metal powder 90% and HA10% obtained in step (2), weigh mixed Ni-Ti metal powder and HA powder with a purity of 99.5% and an average particle size of 100nm ;

[0033] (4) Preparation of composite raw material powder: put the powder weighed in step (3) into a bal...

Embodiment 2

[0042] The preparation method of the porous nickel-titanium / hydroxyapatite composite material described in this embodiment specifically includes the following steps:

[0043] (1) Weighing: According to the mass percentage of 56% Ni and 44% Ti, respectively weigh the Ti metal powder with a purity of 99.9% and a particle size of 40 μm and the Ni metal powder with a purity of 99.5% and a particle size of 65 μm;

[0044] (2) Preparation of alloy raw material powder: put the metal powder weighed in step (1) into the ball mill tank of a ball mill, vacuumize to 7Pa, and then ball mill and mix the powder for 12 hours to obtain mixed Ni-Ti metal powder;

[0045] (3) Weighing: According to the mass percentage of mixed Ni-Ti metal powder 90% and HA10% obtained in step (2), weigh mixed Ni-Ti metal powder and HA powder with a purity of 99.5% and an average particle size of 120nm ;

[0046] (4) Preparation of composite raw material powder: put the powder weighed in step (3) into the ball m...

Embodiment 3

[0053] The preparation method of the porous nickel-titanium / hydroxyapatite composite material described in this embodiment specifically includes the following steps:

[0054] (1) Weighing: According to the mass percentage of Ni57% and Ti43%, respectively weigh the Ti metal powder with a purity of 99.9% and a particle size of 30 μm and the Ni metal powder with a purity of 99.5% and a particle size of 55 μm;

[0055] (2) Preparation of alloy raw material powder: put the metal powder weighed in step (1) into the ball mill tank of a ball mill, vacuumize to 8Pa, and then ball mill and mix the powder for 16 hours to obtain mixed Ni-Ti metal powder;

[0056] (3) Weighing: According to the mass percentage of mixed Ni-Ti metal powder 80% and HA20% obtained in step (2), weigh mixed Ni-Ti metal powder and HA powder with a purity of 99.5% and an average particle size of 130nm ;

[0057] (4) Preparation of composite raw material powder: put the powder weighed in step (3) into the ball mil...

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Abstract

The invention relates to a preparation method for a porous nickel titanium / hydroxyapatite composite material, and belongs to the technical field of biomedical material preparing. The preparation method for the porous nickel titanium / hydroxyapatite composite material comprises the steps that firstly, nickel titanium mixed powder is obtained by mixing nickel metal powder and titanium metal powder evenly; secondly, the obtained nickel titanium mixed powder is mixed with hydroxyapatite powder, and nickel titanium / hydroxyapatite powder is obtained; thirdly, after the nickel titanium / hydroxyapatite powder is mixed with ammonium bicarbonate pore forming agent powder, a briquetted pressing blank is formed through mechanical compression and then put into a discharge plasma sintering furnace to be sintered; and fourthly, after sintering is completed, the briquetted pressing blank is cooled to the room temperature along the furnace, then the hyper-elastic porous nickel titanium / hydroxyapatite composite material is obtained. The porous nickel titanium / hydroxyapatite composite material prepared through the method has the advantages of being controllable in pore parameter, low in elasticity modulus, good in mechanical adaptability and the like; in addition, the porous nickel titanium / hydroxyapatite composite material is endowed with good biological activity and synosteosis capacity, so that the composite material is closer to the structure and functions of a human bone, and good biological adaptability is achieved; the material is particularly suitable for plastic surgery medical apparatus and instruments, marrow cavity implants and the like.

Description

technical field [0001] The invention relates to a preparation method of a porous nickel-titanium / hydroxyapatite composite material, belonging to the technical field of preparation of biomedical materials. Background technique [0002] In recent years, in the artificial implant biomedical metal materials, the development of porous NiTi shape memory alloy as a smart material, because of its comprehensive characteristics of shape memory effect, superelasticity and mechanical properties that better match the elastic modulus of human bone, It can effectively solve the stress shielding and mechanical adaptation problems existing in the clinical application of nickel-titanium (NiTi) shape memory alloys, and open up a new application prospect for NiTi alloys in medical treatment. However, porous NiTi shape memory alloys lack bioactivity and have no active repair function. After being implanted into the human body, it is difficult for the implant to form a strong chemical osseointeg...

Claims

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Application Information

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IPC IPC(8): B22F3/11C22C19/03
CPCC22C19/03B22F3/11
Inventor 张玉勤张磊何正员蒋业华周荣
Owner KUNMING UNIV OF SCI & TECH
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