Preparation method of porous titanium and titanium alloy

A technology of porous titanium and titanium alloys, which is applied in separation methods, chemical instruments and methods, medical science, etc., and can solve the problems such as difficult design of voids in titanium alloy filter core materials

Inactive Publication Date: 2017-08-04
BAOJI UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The titanium alloy filter element material prepared by ordinary sintering met

Method used

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  • Preparation method of porous titanium and titanium alloy
  • Preparation method of porous titanium and titanium alloy
  • Preparation method of porous titanium and titanium alloy

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preparation example Construction

[0021] The embodiment of the present invention provides a method for preparing medical porous titanium and titanium alloy, comprising the following steps:

[0022] Step 1: uniformly mixing Ti metal powder and Ni or Co metal powder, the mass percentage of Ti metal powder in the obtained mixed powder is 45% to 95%, and the mass percentage of Ni or Co metal powder is 55% to 5%;

[0023] Step 2: Put the obtained mixed powder into a graphite or silicon carbide mold, place it in a vacuum sintering furnace for sintering, the vacuum degree is 0.1-10Pa, the one-way pressure is 200-1000MPa, and the heating rate is 20-100℃ / min , the sintering temperature is 800-1400°C, the sintering time is 10-60min, and then the TiNi or TiCo alloy green body is obtained after cooling with the furnace, such as figure 1 shown;

[0024] Step 3: Use the obtained TiNi or TiCo alloy blank as an anode for electrochemical dissolution to dissolve Ni or Co metal powder and dissolve the metal wire mold to obtain ...

Embodiment 1

[0026] This embodiment is a preparation method for preparing porous titanium and porous titanium alloy.

[0027] Step 1: In the mixed metal powder, the mass percentage of Ti metal powder is 50%, and the mass percentage of Ni metal powder is 50%.

[0028] Step 2: Put the mixed metal powder obtained in Step 1 into a graphite mold, place it in a vacuum sintering furnace for sintering, the vacuum degree is 5Pa, the one-way pressure is 500MPa, the heating rate is 20-100°C / min, and the sintering temperature is 1200°C, the sintering time is 40min, and then the TiNi alloy green body is obtained after cooling with the furnace.

[0029] Step 3: Then completely electrochemically dissolve the Ni metal powder in the sulfuric acid electrolyte.

[0030] Step 4: Cleaning the porous titanium and titanium alloy after complete electrolysis of Ni to obtain porous titanium and titanium alloy with similar distribution characteristics of pores and nickel powder.

Embodiment 2

[0032] This embodiment is a preparation method for preparing porous titanium and porous titanium alloy.

[0033] Step 1: In the mixed metal powder, the mass percentage of Ti metal powder is 60%, and the mass percentage of Ni metal powder is 40%.

[0034] Step 2: Put the mixed metal powder obtained in Step 1 into a graphite mold, place it in a vacuum sintering furnace for sintering, the vacuum degree is 5Pa, the one-way pressure is 500MPa, the heating rate is 20-100°C / min, and the sintering temperature is 1200°C, the sintering time is 40min, and then the TiNi alloy green body is obtained after cooling with the furnace.

[0035] Step 3: Then completely electrochemically dissolve the Ni metal powder in the sulfuric acid electrolyte.

[0036] Step 4: Cleaning the porous titanium and titanium alloy after complete electrolysis of Ni to obtain porous titanium and titanium alloy with similar distribution characteristics of pores and nickel powder.

[0037] Table 1 shows the paramete...

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Abstract

The invention discloses a preparation method of porous titanium and titanium alloy, comprising the following steps: uniformly mixing Ti metal powder and alloy powder, the mass percentage of Ti metal powder in the obtained mixed powder is 45%-95%, and the mass percentage of alloy powder The percentage is 55%~5%; put the obtained mixed powder into a graphite or silicon carbide mold, place it in a vacuum sintering furnace for sintering, the vacuum degree is 0.1~10Pa, the one-way pressure is 200~1000MPa, and the heating rate is 20~100℃/ min, sintering temperature 800-1400°C, sintering 10-60min, then cooling to room temperature with the furnace and taking it out to obtain the alloy green body; use the obtained alloy green body as an anode to electrochemically dissolve the alloy metal powder, dissolve the metal wire mold, and be porous titanium. The pores of the porous titanium obtained in the invention have uniform distribution of pores and controllable size arrangement, and can be applied to medical porous titanium and titanium alloy materials and titanium and titanium alloy filter core materials.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to a method for preparing porous titanium and titanium alloys. Background technique [0002] α+β type and β type medical titanium alloys combine many structural and performance characteristics of porous materials, titanium and titanium alloys, have excellent mechanical and chemical properties, and have good biocompatibility. At the same time, such as high specific strength, It has strong corrosion resistance and is the most promising metal material for medical colonies. The porosity of α+β-type and β-type medical titanium alloys can effectively control the elastic modulus, solve the problem of stress shielding, and realize the mechanical matching between the implant and bone tissue. At the same time, it is beneficial to the attachment, proliferation and differentiation of cells, and can promote the transmission of body fluids and the growth of bone tissue. [0003] The existing...

Claims

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Application Information

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IPC IPC(8): C22C1/08C22C14/00A61L27/06A61L27/56B01D39/20
CPCB22F3/1134A61L27/06A61L27/56B01D39/2051C22C14/00
Inventor 张永春唐海平秦少军
Owner BAOJI UNIV OF ARTS & SCI
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