Preparation method for titanium alloy-hydroxyapatite salt biological ceramic porous material

Abstract

The invention discloses a preparation method for a titanium alloy-hydroxyapatite salt biological ceramic porous material. The preparation method for the titanium alloy-hydroxyapatite salt biological ceramic porous material has the characteristics that the 3D printing technology is applied, and by means of the manner that the proportion value of hydroxyapatite salt powder to titanium alloy matrix powder of all fusion covering layers is dynamically adjusted, the titanium alloy-hydroxyapatite salt biological ceramic porous material with titanium alloy being a central layer and titanium alloy-hydroxyapatite salt being a transition layer is prepared. According to the preparation method for the titanium alloy-hydroxyapatite salt biological ceramic porous material, because the performance advantages of various materials are sufficiently utilized and the internal stress is further reduced, excellent mechanical and biological properties are exhibited, therefore, the preparation method for the titanium alloy-hydroxyapatite salt biological ceramic porous material is suitable for the field of bone tissue replacing or implant repairing.

Description

Technical field [0001] The invention belongs to the field of biomedical materials, in particular to a preparation method of a titanium alloy-hydroxyapatite salt bioceramic porous material. Background technique [0002] With the continuous emergence of bone injuries and the increasingly serious trend of population aging, the demand for bone substitute materials has increased greatly with the increase of bone injury cases. Therefore, it is particularly important to develop biomimetic human bone replacement bone repair materials with good structure and biocompatibility. [0003] In recent years, titanium and titanium alloys have been widely used in clinical medicine because of their good biocompatibility, and their inert titanium oxide film can exist stably under physiological conditions. However, existing metal bone implant materials such as titanium alloy have the problem of poor mechanical compatibility with biological bone. The tensile strength of alloys and other materials is m...

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Problems solved by technology

[0005] The patent No. CN200810045066.7 discloses a method for the biological activity of hydroxyapatite in suspended plasma spraying equipment. The hydroxyapatite biologically active coating prepared by this method has good structural uniformity and saves energy and energy. However, this method has disadvantages such as poor process reproducibility, low bonding strength, poor biological activity, degradability, micropores and cracks in the film layer, and it is difficult to meet the clinical application needs of its lifespan, safety and reliability.

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