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Interface coated reinforced biological magnesium-based metal ceramic and preparing method and application thereof

A magnesium-based metal, biological technology, applied in the field of biological magnesium-based cermet and its preparation, to achieve the effects of solving agglomeration, improving strength, and improving the quality of interface bonding

Inactive Publication Date: 2019-12-27
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of nano-β-TCP enhanced phase agglomeration in cermets, the present invention provides a biomagnesium-based cermet with interface coating enhancement and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Slowly add nano-β-TCP powder to Mg(NO 3 ) 2 ·6H 2 O aqueous solution (1.0mol / L) and dispersed by ultrasonic waves. Then slowly add the same volume of Na 2 CO 3 aqueous solution (1.0mol / L) and stirred continuously at 40°C. Then the solution was allowed to stand for 3 hours, filtered, centrifuged, dried and calcined (600° C., 3 hours) to obtain the nanometer β-TCP powder coated with MgO; the nanometer β-TCP powder coated with MgO and Magnesium-zinc alloy powder, wherein the nanometer β-TCP powder mass fraction that MgO coats is 12wt%, is placed in the ball mill, ball mill rotating speed 400 revs / min, ball milling time 6 hours, ball milling obtains mixed powder under protective atmosphere; The powder is used as the raw material, and the magnesium-based cermet is prepared by the laser selective melting process. During the preparation process, the laser power is controlled to 80W, the scanning rate is 300mm / min, and the spot diameter is 80μm, and the MgO-coated β-TCP ce...

Embodiment 2

[0033] Slowly add nano-β-TCP powder to Mg(NO 3 ) 2 ·6H 2O aqueous solution (1.0mol / L) and dispersed by ultrasonic waves. Then slowly add the same volume of Na 2 CO 3 aqueous solution (1.0mol / L) and stirred continuously at 40°C. Then the solution was allowed to stand for 3 hours, filtered, centrifuged, dried and calcined (600° C., 3 hours) to obtain the nanometer β-TCP powder coated with MgO; the nanometer β-TCP powder coated with MgO and Magnesium-zinc alloy powder, wherein the nanometer β-TCP powder mass fraction that MgO coats is 10wt%, is placed in the ball mill, ball mill rotating speed 400 revs / min, ball milling time 6 hours, under protective atmosphere ball milling obtains mixed powder; The powder is used as the raw material, and the magnesium-based cermet is prepared by the laser selective melting process. During the preparation process, the laser power is controlled to 80W, the scanning rate is 300mm / min, and the spot diameter is 80μm, and the MgO-coated β-TCP cer...

Embodiment 3

[0036] Slowly add nano-β-TCP powder to Mg(NO 3 ) 2 ·6H 2 O aqueous solution (1.0mol / L) and dispersed by ultrasonic waves. Then slowly add the same volume of Na 2 CO 3 aqueous solution (1.0mol / L) and stirred continuously at 40°C. Then the solution was allowed to stand for 2 hours, filtered, centrifuged, dried and calcined (600° C., 3 hours) to obtain the nanometer β-TCP powder coated with MgO; the nanometer β-TCP powder coated with MgO and Magnesium-zinc alloy powder, wherein the nanometer β-TCP powder mass fraction that MgO coats is 12wt%, is placed in the ball mill, ball mill rotating speed 400 revs / min, ball milling time 6 hours, ball milling obtains mixed powder under protective atmosphere; The powder is used as the raw material, and the magnesium-based cermet is prepared by the laser selective melting process. During the preparation process, the laser power is controlled to 80W, the scanning rate is 300mm / min, and the spot diameter is 80μm, and the MgO-coated β-TCP ce...

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Abstract

The invention relates to interface coated reinforced biological magnesium-based metal ceramic and a preparing method thereof. Particularly, through MgO coating, dispersion of beta-TCP ceramic particles in a magnesium alloy matrix can be improved, through the selective laser melting technology, the interface coated reinforced biological magnesium-based metal ceramic is prepared, the surface of thebeta-TCP ceramic particles is coated with MgO, on one hand, the MgO can be evenly separated out and coated on the surface of the beta-TCP, on the other hand, the MgO and the magnesium matrix has the good crystal orientation relation, in the selective laser fusion process, the wettability of beta-TCP in the magnesium melt can be improved, effective dispersion is achieved, and the agglomeration problem can be solved. In addition, the MgO and magnesium have good crystal orientation relation to enable beta-TCP to serve as heterogeneous nuclear particles of the magnesium matrix, the magnesium alloygrains are refined, meanwhile, due to existence of the nano MgO transition layer on the interface, the interface combination quality of the beta-TCP and the matrix can be improved, the composite material strength can be improved, and the high-property biological magnesium-based metal ceramic can be prepared.

Description

technical field [0001] The invention relates to a biological magnesium-based cermet with enhanced interface coating and a preparation method thereof, belonging to the technical field of biological material design and preparation. Background technique [0002] Magnesium (Mg)-based materials have good biodegradability and an elastic modulus matching that of human bone, and have broad application prospects as bone implant materials. Among them, magnesium-based cermets are gradually becoming a research hotspot in this field because they can achieve excellent comprehensive performance through the complementary advantages of metals and ceramics. Among the currently commonly used bioceramics, β-tricalcium phosphate (β-TCP) ceramics have good biocompatibility and biodegradability, and its chemical composition is close to that of human bone. Osteocytes provide a large amount of Ca and P elements, which is beneficial to promote the formation of new bone; more importantly, the good bi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B22F9/04C22C23/04B33Y10/00A61L27/42A61L27/50A61L27/58C04B41/87
CPCB22F9/04C22C23/04B33Y10/00A61L27/425A61L27/427A61L27/50A61L27/58C04B41/87C04B41/5029B22F2009/043B22F10/00B22F10/36B22F10/28C04B41/4552C04B41/0045Y02P10/25
Inventor 帅词俊高成德
Owner CENT SOUTH UNIV
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