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Method for preparing medical porous tantalum with three-dimensional reticular graphite foam or reticular vitreous carbon

A graphite foam, three-dimensional network technology, applied in gaseous chemical plating, metal material coating process, coating and other directions, can solve the problems of difficult processing, heavy weight, powder particle residue, etc., and achieve good biocompatibility , the effect of weight reduction

Inactive Publication Date: 2013-05-08
QINGDAO ADVANCED GRAPHITE MATERIALS CO LTD
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AI Technical Summary

Problems solved by technology

The problem is that the biocompatibility is not good, the weight is large, and it cannot grow well with the organism
There is also a method of manufacturing gold porous tantalum by powder metallurgy. This method must not only reach the melting point of tantalum, but also avoid the collapse of porous tantalum. There is a problem that sintering is difficult to control, and the post-processing is also very difficult, and it is easy to produce powder. particle residue

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] The method for making medical porous tantalum with three-dimensional network graphite foam or network glassy carbon comprises the following steps: (1) prepare template and tantalum source: wherein, said template is three-dimensional network graphite foam or network glassy carbon, said The tantalum source is tantalum pentafluoride, tantalum pentachloride or tantalum ethoxide; (2) the three-dimensional networked graphite foam or networked glassy carbon template is placed in a vapor deposition furnace for reaction by vapor deposition to produce a finished product.

[0011] The method of vapor deposition includes the following steps: vacuum heating the vapor deposition furnace, the heating temperature reaches 100-2000 ° C, heat preservation for 1-3 hours, then feed hydrogen into the vapor deposition furnace, and then feed hydrogen or hydrogen argon mixed gas And the tantalum source, the tantalum source reacts with the template, the reaction temperature is 300-1000°C, and the...

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PUM

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Abstract

The invention relates to a method for preparing medical porous tantalum with three-dimensional reticular graphite foam or reticular vitreous carbon, which has the advantages of uniform coating, no residual particles, good biocompatibility, and convenience for manufacture in later period. The technical scheme of the method is as follows: the method comprises the following steps of (1) preparing a template and a tantalum source, wherein the template is the three-dimensional reticular graphite foam or the reticular vitreous carbon, and the tantalum source is tantalum pentafluoride, tantalum pentachloride or tantalum ethoxide; and (2) placing the three-dimensional reticular graphite foam or reticular vitreous carbon template in a vapor deposition furnace for reaction by a vapor deposition method, so as to prepare the finish product.

Description

technical field [0001] The invention belongs to the field of preparation methods of medical porous tantalum, in particular to a method for making medical porous tantalum with three-dimensional reticulated graphite foam or reticulated glassy carbon, which has uniform coating, no particle residue, good biocompatibility and convenient post-processing. . Background technique [0002] At present, porous stainless steel and porous titanium are mostly used in the preparation of porous medical implants. The problem is that the biocompatibility is not good, the weight is large, and it cannot grow well with the organism. There is also a method of manufacturing gold porous tantalum by powder metallurgy. This method must not only reach the melting point of tantalum, but also avoid the collapse of porous tantalum. There is a problem that sintering is difficult to control, and the post-processing is also very difficult, and it is easy to produce powder. particle residue. Contents of t...

Claims

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Application Information

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IPC IPC(8): C23C16/14C23C16/18C23C16/44
Inventor 郭建明杨艳文郭建军
Owner QINGDAO ADVANCED GRAPHITE MATERIALS CO LTD
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