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Preparation method of magnesium-zinc-tricalcium phosphate composite material by powder hot pressed sintering

A composite material, magnesium-zinc-phosphoric acid technology, applied in the field of magnesium-zinc-tricalcium phosphate composite materials, can solve problems such as material difficulties, and achieve the effects of precise content, precise component control, and uniform composition

Active Publication Date: 2013-08-07
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Similarly, it is very difficult to obtain a homogeneous and pure material in the melt infiltration process

Method used

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  • Preparation method of magnesium-zinc-tricalcium phosphate composite material by powder hot pressed sintering
  • Preparation method of magnesium-zinc-tricalcium phosphate composite material by powder hot pressed sintering
  • Preparation method of magnesium-zinc-tricalcium phosphate composite material by powder hot pressed sintering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029]For the magnesium-6% zinc-5% tricalcium phosphate composite material in terms of mass, magnesium powder with a particle size of 75 μm, zinc powder with a particle size of 25 μm, and tricalcium phosphate powder with a particle size of 25 μm are used. The purity of all powders is More than 99.5%, the three powders are weighed on an electronic balance according to the mass ratio according to different use requirements, and put into a three-dimensional mixer at room temperature to mix evenly, and the mixing time is 0.5 hours. Put the mixed powder in the mold, press molding at room temperature, and the pressing pressure is 5MPa; place the pressed composite material blank in the same size mold, pressurize and sinter under nitrogen protection atmosphere, first raise the temperature to 400 ℃, keep warm for 5 minutes, then continue to heat up to 650 ℃, keep warm for 5 minutes. The pressure was kept at 2 MPa throughout the heating process. After the sintering is completed, the co...

Embodiment 2

[0032] For the composite material whose components are magnesium-1% zinc-1% tricalcium phosphate in terms of mass, magnesium powder with a particle size of 200 μm, zinc powder with a particle size of 150 μm, and tricalcium phosphate powder with a particle size of 75 μm are used. The purity of all powders is More than 99.5%, the three powders are weighed on an electronic balance according to the mass ratio according to different use requirements, and put into a three-dimensional mixer at room temperature to mix evenly, and the mixing time is 2 hours. Put the mixed powder in the mold, press molding at room temperature, and the pressing pressure is 50MPa; place the pressed composite material blank in the same size mold, pressurize and sinter under nitrogen protection atmosphere, first raise the temperature to 450 ℃, keep warm for 30 minutes, then continue to heat up to 600 ℃, keep warm for 30 minutes. The pressure was kept at 20MPa throughout the heating process. After the sinte...

Embodiment 3

[0035] For the magnesium-15% zinc-30% tricalcium phosphate composite material in terms of mass, magnesium powder with a particle size of 200 μm, zinc powder with a particle size of 100 μm, and tricalcium phosphate powder with a particle size of 50 μm are used. The purity of all powders is at More than 99.5%, the three powders are weighed on an electronic balance according to the mass ratio according to different use requirements, and put into a three-dimensional mixer at room temperature to mix evenly, and the mixing time is 1 hour. Put the mixed powder in the mold, press molding at room temperature, and the pressing pressure is 40MPa; place the pressed composite material blank in the same size mold, pressurize and sinter under nitrogen protection atmosphere, first raise the temperature to 425 ℃, keep warm for 25 minutes, then continue to heat up to 600 ℃, keep warm for 5 minutes. The pressure was kept at 2 MPa throughout the heating process. After the sintering is completed,...

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Abstract

The invention discloses a preparation method of a magnesium-zinc-tricalcium phosphate composite material by powder hot pressed sintering, which comprises the following steps: evenly mixing 55-98 wt% of magnesium powder, 1-15 wt% of zinc powder and 1-30 wt% of tricalcium phosphate at room temperature; putting the mixed powder in a die, and carrying out press forming at room temperature; putting the formed composite material blank in a die, and carrying out pressed sintering in a nitrogen protective atmosphere; after the thermal insulation of the sintering is completed, relieving the pressure, and naturally cooling to room temperature; stripping, taking out the sintered composite material, and carrying out heat treatment at 200-400 DEG C for 1-8 hours in a nitrogen protective atmosphere; and finally, forging the composite material blank at 300-500 DEG C under the pressure of 50-100MPa. The invention has the characteristics of short production technique process and high technical implementation feasibility; and the prepared magnesium-zinc-tricalcium phosphate composite material has the characteristics of accurate component control and excellent comprehensive properties.

Description

technical field [0001] The invention relates to a magnesium-zinc-tricalcium-phosphate composite material that can be used as a medical implant material, which is prepared by mixing magnesium powder, zinc powder and tricalcium phosphate powder, and pressurizing and sintering at high temperature. Background technique [0002] Biomedical materials are new materials developed in the two basic research fields of materials and medicine in recent years. Biomedical materials include materials that can be implanted in organisms and combined with body tissues in medicine. They must meet some typical biological requirements, mainly including: (1) Good tissue compatibility. It is non-toxic, non-teratogenic and carcinogenic, does not cause allergic reactions, and does not interfere with the body's immunity; (2) The physical and chemical properties are stable. It has the strength, elasticity, corrosion resistance, wear resistance, etc. that match the living body; (3) It is easy to proces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C32/00C22C23/00C22C1/05B22F3/16
Inventor 余琨陈良建赵俊
Owner CENT SOUTH UNIV
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