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Medical high abrasion resistance titanium alloy composite and gradient in-situ nano multiphase abrasion reduction medical titanium alloy 3D printing method

A 3D printing and composite material technology, which is applied in the field of high-performance medical titanium alloy manufacturing, can solve the problems of complex smelting process, low forming precision, and limited performance, so as to improve interface wetting characteristics, wear resistance, and comprehensive performance. performance effect

Active Publication Date: 2017-09-05
洋紫荆牙科器材(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the smelting method has problems such as complex process, high energy consumption, and low forming precision, which have severely limited its performance improvement.

Method used

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  • Medical high abrasion resistance titanium alloy composite and gradient in-situ nano multiphase abrasion reduction medical titanium alloy 3D printing method
  • Medical high abrasion resistance titanium alloy composite and gradient in-situ nano multiphase abrasion reduction medical titanium alloy 3D printing method
  • Medical high abrasion resistance titanium alloy composite and gradient in-situ nano multiphase abrasion reduction medical titanium alloy 3D printing method

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Embodiment 1

[0042] The present invention provides a method for 3D printing gradient in-situ nano-composite phase wear-reducing medical titanium alloy, using laser selective melting technology to form gradient in-situ nano-composite phase ceramic wear-reducing medical titanium alloy, including the following specific steps:

[0043] Step (1): After weighing the pure titanium powder with a purity of 99.99% and a particle size of 10-40 μm and the boron carbide ceramic powder with a particle size of 1-10 μm according to the mass ratio of 95 wt% and 5 wt%, respectively, use The high-energy ball mill mixed the mixed powder under the protective atmosphere of high-purity argon with a purity of 99.99%. The rotating speed was 200 rpm. The material ratio is 1:5, and stainless steel balls with a diameter of Φ4~Φ10 are selected to obtain uniformly mixed forming powder;

[0044] Step (2): Construct a three-dimensional model of the medical titanium alloy sample and slice it, with a layer thickness of 30 ...

Embodiment 2

[0047] The difference between this embodiment and Example 1 is that in step (1), the mass fraction of boron carbide ceramic powder is set to 15%, the mass fraction of medical Ti-Al alloy powder is set to 85%, and the others are the same as in Example 1.

Embodiment 3

[0049] The difference between this embodiment and Example 2 is that in step (3), the laser output linear energy density is set to 175 J / m, and the substrate preheating temperature is set to 175° C., and the others are the same as in Example 2.

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Abstract

The invention discloses a medical high abrasion resistance titanium alloy composite and a gradient in-situ nano multiphase abrasion reduction medical titanium alloy 3D printing method. The physical characteristics of boron carbide ceramic and a titanium alloy are combined, a laser selective melting forming process is adopted, and under the effect of high energy lasers, active elements of carbon and boron can be conveniently diffused outwards in a radial gradient mode along boron carbide ceramic particles, and nano ceramic reinforced phases such as Ti-B, TiB2 and TiC can be easily synthesized through the carbon, the boron and the medical titanium alloy. On one hand, forming of a gradient ceramic particle / titanium alloy interface is promoted, and wettability of the gradient ceramic particle / titanium alloy interface is remarkably enhanced; and on the other hand, based on good physical properties and the uniform dispersion strengthening effect of the in-situ synthesis multiphase nano ceramic particles, the friction and abrasion characteristics of the medical titanium alloy can be effectively improved, manufacturing of the high performance medical titanium alloy is achieved, and the medical high abrasion resistance titanium alloy has good clinical application prospects and economic value.

Description

technical field [0001] The invention relates to a method for 3D printing gradient in-situ nanocomposite phase reduction medical titanium alloy, in particular to a method for forming high wear-resistant medical titanium alloy based on laser selective melting, which belongs to the field of high-performance medical titanium alloy manufacturing. Background technique [0002] Biomedical metal materials have been clinically used as biomaterials due to their excellent comprehensive properties. They have been clinically used in implant materials such as artificial joints, dental implants, heart valves and artificial organs, and have achieved good results. . Among them, titanium alloy has the advantages of good biocompatibility, high specific strength, strong corrosion resistance, good processability, and low elastic modulus. It is a metal material widely used in clinical practice, and is a substitute material for human organs and tissues. It has been used in human artificial heart ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C32/00B22F9/04B22F3/105B33Y10/00B33Y70/00A61L27/06A61L27/10A61L27/50
CPCA61L27/06A61L27/10A61L27/50C22C14/00C22C32/0057B22F9/04B33Y10/00B33Y70/00B22F2009/043B22F2998/10A61L2430/02B22F10/00B22F10/32B22F10/34B22F10/28B22F10/36B22F10/366Y02P10/25
Inventor 夏木建丁红燕李年莲刘爱辉林岳宾侯志伟陈中叶玮
Owner 洋紫荆牙科器材(深圳)有限公司
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