Gradient medical material and preparation method thereof

A gradient and additive technology, which is applied in pharmaceutical formula, metal material coating process, electrolytic coating, etc., can solve problems such as unfavorable patient rehabilitation, achieve the effect of improving anti-bacterial infection ability, increasing bonding strength, and improving corrosion resistance

Active Publication Date: 2020-06-05
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

Although the titanium alloy of this invention has a low modulus of elasticity, it contains elements Gd, Fe and Pt that are harmful to the human body. If t...

Method used

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  • Gradient medical material and preparation method thereof
  • Gradient medical material and preparation method thereof
  • Gradient medical material and preparation method thereof

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Embodiment 1

[0044] Embodiment 1: the addition of changing Zr element is: (a) 0wt%; (b) 1wt%; (c) 3wt%; (d) 5wt%; (e) 7wt%, determine optimal addition 3wt%, (b) 2wt%; (c) 4wt%; (d) 6wt%; (e) 8wt% to determine the optimum addition 6wt%. Finally, the addition amount of Cu and Zn elements in the change layer is (a) 0.2wt%; (b) 0.3wt%; (c) 0.4wt%, and the optimal addition amount is determined to be 0.4wt%.

[0045] A method for preparing a gradient medical material, characterized in that it comprises the following steps:

[0046] (1) Calculate the mass percentage of each element in the alloy, with TiH 2 , Mo powder, Nb powder, Zr powder and Ta powder as raw materials, according to the designed alloy composition ratio, accurately weigh the elemental metal powder of each element; put the weighed powder into a vacuum stainless steel tank, the ball-to-material ratio is 3:1 , and ball milled at a speed of 180r / min for 600min, ground the mixed material, and passed through a 400-mesh sieve;

[004...

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Abstract

The invention discloses a gradient medical material and a preparation method thereof. An alloy strengthening element Zr and a beta-phase stable element Ta are added on the basis of the ratio of Ti-10Mo-28Nb alloy, and a surface coating of Ti-Mo-Nb-Zr-Ta multicomponent alloy is an HA coating or an HA-Cu-Zn complex coating. Through addition of Zr and Ta, the elasticity modulus of the alloy can be remarkably reduced, the requirement for strength of use inside the body is met, corrosion resistance is improved, and the requirement for implantation of titanium alloy in the human body is further met.A surface coating of Ti-10Mo-28Nb-3Zr-6Ta multicomponent alloy is an HA coating or an HA-Cu-Zn complex coating. The surface of Ti-5Mo-28Nb-3Zr-6Ta alloy is polished; and nanosized oxidation tubes areprepared on the surface of the alloy in an anodic oxidation method, then a layer prepared by elements of hydroxyapatite (HA), copper (Cu) and zinc (Zn) is sprayed to the surfaces of the nanosized oxidation tubes through a plasma spraying technology, and a complex bio-coating is prepared. By the adoption of the gradient medical material, the problems that an existing bone implantation material ishigh in elasticity modulus, poor in biological activity and poor in corrosion resistance and antibacterial property can be solved.

Description

technical field [0001] The invention belongs to the technical field of medical titanium alloy material preparation and surface modification thereof, in particular to a biogradient medical material that reduces the elastic modulus of the titanium alloy matrix and improves the strength, biological activity, corrosion resistance and antibacterial properties of the titanium alloy matrix and preparation method. Background technique [0002] Gradient material refers to the selection of several materials with different properties during the preparation process of the material, and the continuous control of the microscopic elements of the material (including gradient changes in pore size, gradient changes in porosity, and gradient changes in composition), so that the composition of the interface and organization changes continuously. There are many classification methods for gradient materials according to different classification standards. According to the combination of materia...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C1/05C25D11/26C23C4/134C23C4/06C23C4/04A61L31/02A61L31/08A61L31/14A61L31/16
CPCA61L31/022A61L31/086A61L31/088A61L31/14A61L31/16A61L2300/102A61L2300/404A61L2400/12C22C1/058C22C14/00C23C4/04C23C4/06C25D11/26C23C4/134
Inventor 许莹蔡艳青魏子琰
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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