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A radially graded porous titanium alloy part and its 3D printing preparation method

A hierarchical porous, 3D printing technology, applied in the direction of additive processing, etc., can solve the problem of single repetition of porous titanium microporous structure, and achieve the effects of easy adjustment of pore size, reduced production cost, and good osseointegration performance

Active Publication Date: 2021-10-15
UNIV OF SCI & TECH BEIJING +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the single repeating problem of the existing porous titanium microporous structure, the present invention proposes a high-porosity, high-strength, light-weight radially graded porous titanium alloy part and its 3D printing preparation method

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  • A radially graded porous titanium alloy part and its 3D printing preparation method
  • A radially graded porous titanium alloy part and its 3D printing preparation method
  • A radially graded porous titanium alloy part and its 3D printing preparation method

Examples

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Embodiment 1

[0052] This embodiment proposes a radially graded porous titanium alloy part, such as Figure 1A , 1B , 1C and figure 2 As shown, the present embodiment is a high-strength porous TC4 titanium alloy material, and the pore structure is composed of linear arrays of unit cells A, unit B, unit C and unit D with gradual gradients; each of the unit cells A , unit cell B, unit cell C and unit cell D are all connected by four cylindrical titanium alloy columns with the same length, and the height of the titanium alloy column (cylinder) is 1mm; among them, the diameter of the titanium alloy column of unit cell A is The diameter of the titanium alloy column of unit cell B is 0.2mm, the diameter of the titanium alloy column of unit cell C is 0.3mm, and the diameter of the titanium alloy column of unit cell D is 0.4mm. The unit cell A is arrayed in the innermost layer, providing the minimum density and the largest equivalent pore size, and the array width is 6mm; the unit cell B and unit...

Embodiment 2

[0057] This embodiment proposes a radially graded porous titanium alloy part, such as Figure 1A , 1B As shown in and 1C, the present embodiment is a pure titanium porous material, and the pore structure is composed of linear arrays of unit cells A, unit B, unit C and unit D with gradual gradients; each of the unit cells A, unit cell B. Unit cell C and unit cell D are both composed of four cylindrical pure titanium columns with the same length. The height of the pure titanium column is 0.6mm; the diameter of the pure titanium column of unit cell A is 0.1mm, and that of The diameter of the pure titanium column is 0.15 mm, the diameter of the pure titanium column of the unit cell C is 0.2 mm, and the diameter of the pure titanium column of the unit cell D is 0.3 mm. The unit cell A is arrayed in the innermost layer, providing the minimum density and the largest equivalent pore size, and the array width is 3 mm; the unit cell B and unit C are arrayed in the second inner layer in ...

Embodiment 3

[0062] This embodiment proposes a radially graded porous titanium alloy part, such as Figure 1A , 1B As shown in and 1C, the present embodiment is a porous titanium alloy part of Ti-5Cu porous material, and the pore structure is composed of a linear array of unit cells A, unit B, unit C and unit D with gradual gradients; each of the Unit cell A, unit cell B, unit cell C, and unit cell D are all connected by four cylindrical titanium alloy columns with the same length, and the height of the titanium alloy column is 1mm; among them, the diameter of the titanium alloy column in unit cell A is The diameter of the titanium alloy column of unit cell B is 0.3mm, the diameter of the titanium alloy column of unit cell C is 0.4mm, and the diameter of the titanium alloy column of unit cell D is 0.6mm. The unit cell A is arrayed in the innermost layer, providing the minimum density and the largest equivalent pore size, and the array width is 5mm; the unit cell B and unit C are arrayed in...

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Abstract

The invention belongs to the field of design and preparation of 3D printing materials, and in particular relates to a radially graded porous titanium alloy part and a 3D printing preparation method thereof. The porous titanium alloy part has the advantages of high porosity, high strength, light weight, etc., and includes several closely arranged basic units; the basic units include unit cell A, unit cell B, unit cell C and unit cell D; The unit cell A is used as the innermost layer of the porous titanium alloy part to form the minimum density and the maximum equivalent pore diameter of the porous titanium alloy part; the unit cell B and the unit cell C are sequentially used as the porous titanium alloy part. The sub-inner layer forms the intermediate pore diameter of the porous titanium alloy part, and serves as a multi-scale smooth transition of the material density of the porous titanium alloy part; the unit cell D is used as the outermost layer to form the porous titanium alloy part Minimum pore diameter and maximum density; thus making the porous titanium alloy part form a structure in which the porosity of porous titanium and the equivalent pore diameter gradually change.

Description

technical field [0001] The invention belongs to the field of design and preparation of 3D printing materials, in particular to a high-porosity, high-strength, light-weight radially graded porous titanium alloy part and a 3D printing preparation method thereof. Background technique [0002] Titanium and its alloys have outstanding advantages such as low density, high strength, good biocompatibility and corrosion resistance, and are widely used in aerospace, chemical, biomedical and other fields. In order to achieve the application purpose of light weight and low elastic modulus, introducing porous structure into titanium alloy is an effective method. Porous titanium combines the characteristics of titanium alloy and metal foam, which can reduce the weight of the material without weakening its strength, and also has excellent toughness and stiffness. Therefore, the excellent properties of porous titanium and its alloys have broad application prospects in some special fields, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/11B33Y10/00B33Y80/00
CPCB22F3/1103B33Y10/00B33Y80/00
Inventor 焦树强罗乙娲朱骏王明涌
Owner UNIV OF SCI & TECH BEIJING
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