Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of porous titanium material and preparation method thereof

A technology of porous titanium and pure titanium, which is applied in the field of porous titanium materials, can solve the problems of uneven thermal stress of samples, unsatisfactory product performance, complex molding process, etc., and achieve fast heating speed, short time consumption and uniform pore distribution. Effect

Active Publication Date: 2020-05-26
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation methods of traditional sintered metal porous materials include compression molding sintering, isostatic pressing sintering, loose packing sintering and powder rolling, etc., but the molding process is relatively complicated, the performance of the product is not ideal, and the production efficiency is low
The new sintered porous material preparation technology such as injection molding (Metal injection molding, MIM), three-dimensional printing (Three-dimensional printing, 3DP) and other processes, the product production is more convenient and the efficiency is relatively improved, but the cost is relatively high, the sintering process Samples are prone to thermal stress caused by uneven heating, and the improvement of some production processes will take a long time to explore and perfect

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of porous titanium material and preparation method thereof
  • A kind of porous titanium material and preparation method thereof
  • A kind of porous titanium material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0038] The preparation method of the porous titanium material of the present invention comprises the following steps:

[0039] The raw materials used in the present invention are spherical pure titanium powder and pure titanium mesh (i.e. titanium fiber mesh). In terms of mass percentage, the C content is 0.006%, the H content is 0.002%, the O content is 0.08%, and the Fe content is 0.056%. The Al content is 0.017%, the Cl content is 0.01%, the Al content is less than 0.01%, the Na content is less than 0.005%, the N content is less than 0.005%, and the rest is Ti. The particle size of the titanium powder is 150-180 μm, and the fiber particle size of the titanium fiber mesh is 145-260 μm.

[0040] The present invention adopts a graphite mould, and the inner cavity size of the graphite mould is Φ20mm. When preparing a sample, first spread 2g of spherical pure titanium powder on the bottom of the mould, then vibrate the mould horizontally for 5 times to make the spherical pure ti...

Embodiment 1

[0047]The sample prepared from spherical pure titanium powder and titanium fiber net with a purity >99.81% is sintered by spark plasma sintering. The particle size of the spherical pure titanium powder is 150-180 μm, and the pure titanium net is 8 layers. The diameter of the titanium fiber mesh is 260 μm, the sintering temperature is 850°C, and the heating rate: when the temperature is 0-650°C, the heating rate is 100°C / min; when the temperature is 650-750°C, the heating rate is 10°C / min; When the temperature is 750-800°C, the heating rate is 5°C / min; when the temperature is 800-850°C, the heating rate is 2°C / min. During the sintering process, the pressure is 12kN. time, then unload, and finally cool to room temperature with the furnace to make a porous titanium material. The porous titanium material prepared by the preparation method of this embodiment has a porosity of 3.9%, a Vickers hardness of 84.3HV, and a yield strength of 120.4MPa. The elastic modulus is 3.7GPa (as sho...

Embodiment 2

[0049] The sample prepared from spherical pure titanium powder and titanium fiber net with a purity >99.81% is sintered by spark plasma sintering. The particle size of the spherical pure titanium powder is 150-180 μm, and the pure titanium net is 10 layers. The diameter of the titanium fiber mesh is 250 μm, the sintering temperature is 1000°C, and the heating rate: when the temperature is 0-800°C, the heating rate is 100°C / min; when the temperature is 800-900°C, the heating rate is 10°C / min; When the temperature is 900-950°C, the heating rate is 5°C / min; when the temperature is 950-1000°C, the heating rate is 2°C / min. During the sintering process, the pressure is 5kN. time, then unload, and finally cool to room temperature with the furnace to make a porous titanium material. The porous titanium material prepared by the preparation method of this embodiment has a porosity of 4.3%, a Vickers hardness of 184.7HV, and a yield strength of 303.3MPa. The elastic modulus is 8.6GPa (as...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
Vickers hardnessaaaaaaaaaa
yield strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a porous titanium material and a preparation method thereof. Discharge plasma sintering is performed on a test sample, pressure maintaining is performed after a sintering temperature is reached, unloading is performed after pressure maintaining is ended, and finally, the test sample is cooled to the room temperature along with a furnace, so that the porous titanium materialis obtained, wherein a sintering temperature ranges from 850 DEG C to 1350 DEG C and sintering pressure is 5-20 kN; the test sample comprises spherical pure titanium powder and a plurality of layersof pure titanium nets, and the spherical pure titanium powder is filled into grids of the pure titanium nets and gaps among the pure titanium nets. The porous titanium material prepared by the methodhas the characteristics of certain porosity, relatively uniform pore distribution and excellent mechanical property.

Description

technical field [0001] The invention relates to the technical field of porous titanium materials, in particular to a porous titanium material and a preparation method thereof. Background technique [0002] Porous titanium is a new type of functional material, which usually has good permeability, porosity, specific surface area, shock absorption capacity and absorption capacity, as well as good corrosion resistance and biocompatibility. Widely concerned in many fields such as medicine, papermaking, fishing and environmental protection. The sintered metal porous material is made of metal (or alloy) powder and metal fiber as raw materials, and is prepared into a porous material with a rigid structure through molding and high-temperature sintering. The preparation methods of traditional sintered metal porous materials include compression molding sintering, isostatic pressing sintering, loose packing sintering and powder rolling, etc., but the molding process is relatively compl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/11B22F3/105
CPCB22F3/105B22F3/11B22F2003/1051
Inventor 刘世锋时明军杨鑫冯璐李安张朝晖
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY