Method and product of sputtering and depositing bioactive gradient hydroxyapatite/Ti layer on Ti alloy surface

A hydroxyapatite, bioactive technology, applied in sputtering plating, metal material coating process, coating and other directions, to achieve the effect of simple film-making process, increased stability, and improved bonding strength

Inactive Publication Date: 2004-04-07
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of RF / DC magnetron co-sputtering technology to prepare composition and structure dual-gradient bioactive layers on metal surfaces has not been reported.

Method used

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  • Method and product of sputtering and depositing bioactive gradient hydroxyapatite/Ti layer on Ti alloy surface
  • Method and product of sputtering and depositing bioactive gradient hydroxyapatite/Ti layer on Ti alloy surface
  • Method and product of sputtering and depositing bioactive gradient hydroxyapatite/Ti layer on Ti alloy surface

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Experimental program
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Effect test

Embodiment

[0017] Embodiment: a kind of method (see figure 1 ), characterized in that it is realized by the following steps:

[0018] ①Raw material powder mixed ball mill: Calcium hydrogen phosphate dihydrate (CaHPO 4 2H 2 O) and calcium carbonate (CaCO 3 ) was mixed and ball-milled at a molar ratio of 6:4 for 16 hours;

[0019] ② Hydrothermal reaction: add enough deionized water, the temperature is 90°C, and the reaction time is 2 hours;

[0020] ③Drying and grinding, the drying temperature is 80°C, and the drying time is 8 hours. ;

[0021] ④ Target material mixing: Hydroxyapatite (HA) powder is mixed with 10% calcium oxide (CaO) powder, and the time in target material mixing is 8 hours;

[0022] ⑤Cold press forming: the pressure is 200-300MPa;

[0023] ⑥ Sintering: the temperature is 1150°C, placed in an air furnace for 3 hours;

[0024] ⑦ Double-slant target sputtering: use a multi-target magnetron sputtering apparatus for double-slant target sputtering, and the flow rate of ...

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Abstract

The method of sputtering and depositing bioactive gradient hydroxyapatite/Ti layer on Ti alloy surface includes the following steps: mixing and ball milling material powder; hydrothermal reaction; stoving and grinding; mixing target material; cold pressing at 200-300 MPa to form; sintering; double-inclined target sputtering; and heat treatment of the sputtered film. The product has multilayer structure of Ti alloy matrix, compact transition TiO2 layer I with dispersed hydroxyapatite, TiO2 reinforced transition hydroxyapatite layer II, and porous hydroxyapatite layer. The present invention realizes the double gradient of both component and structure, and raises the interface binding strength effectively. The present invention has simple film preparing process and homogeneous film thickness, is suitable for surface activation of implant with complicated shape, and can prepare hard tissue for clinical need, especially as bearing bone repairing and substituting material.

Description

(1) Technical field: [0001] The invention belongs to the technology of preparing bioactive layers on the surface of metals and alloys, in particular to a method for co-sputtering deposition of hydroxyapatite (HA) / titanium (Ti) gradient bioactive layers on the surface of titanium alloys and its products. (two) background technology: [0002] Titanium and titanium alloys with bioactive layers combine the excellent mechanical properties of metals with the good biocompatibility of HA, and are indispensable materials for clinically replacing human load-bearing bone and teeth. The interfacial bonding between the coating and the substrate and the interfacial bonding with human bone tissue is the key to determine the quality of such materials. At present, the surface bioactivation of medical metals is mainly based on the preparation of hydroxyapatite (HA) coatings or films on the surface. Common preparation processes include: plasma spraying, laser cladding, sol-gel, electrocrystall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/32C23C14/06C23C14/34
Inventor 陈民芳
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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