Nano-composite (Ti3Mo3Zr2Sn25Nb)-xHA biological material and preparation method thereof

Abstract

The invention discloses a preparation method of a nano-composite (Ti3Mo3Zr2Sn25Nb)-xHA biological material. The preparation method comprises the following steps: weighing Ti, Mo, Zr, Sn and Nb powder raw materials; the weighed powder and stainless steel balls are put into a stainless steel ball milling tank for first-time ball milling, and the mixed ball milling time is 8-12 h; the HA powder is weighed according to the proportion, after the nanoscale HA powder is put in, vacuumizing is conducted again, secondary mechanical ball-milling powder mixing is conducted, the rotating speed is 300 r / min, the ball-milling time is 2 hours, after secondary ball-milling is completed, the ball-milling mixed powder in a tank is taken out and placed in a vacuum drying box to be dried, and series of composite material powder is obtained. The nanoparticles can obviously reduce reaction activation energy, refine crystal grains, enhance powder activity, improve sintering capacity and induce chemical reaction, so that it is guaranteed that internal alloying of the composite material obtained after spark plasma sintering is sufficient and uniform.

Description

technical field [0001] The invention relates to the field of biotechnology, in particular to a nanocomposite (Ti3Mo3Zr2Sn25Nb)-χHA biological material and a preparation method thereof. Background technique [0002] Due to the long heating and cooling time of hot pressing sintering, high sintering temperature, and unidirectional pressure is usually adopted, it is easy to cause anisotropy in the microstructure and mechanical properties of the sintered body, so the conventional powder metallurgy sintering method is difficult to achieve good results. After sintering, the powder can be pulverized into nano-sized particles after being processed by mechanical ball milling. Aiming at some problems existing in the clinical application of biomedical Ti3Mo3Zr2Sn25Nb titanium alloys, the biofunctionalized Ti3Mo3Zr2Sn25Nb matrix composites were prepared by mechanical ball milling and spark plasma sintering technology. Based on the preparation process, microstructure evolution, mechanical...

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Problems solved by technology

[0002] Due to the long heating and cooling time of hot pressing sintering, high sintering temperature, and usually unidirectional pressure, it is easy to cause anisotropy in the microstructure and mechanical properties of the sintered body, so it is difficult to achieve good sintering by conventional powder metallurgy sintering methods. Sintering, and after the powder is processed by mechanical ball milling, the powder can be crushed into nano-sized particles

Aiming at some problems existing in the clinical application of biomedical Ti3Mo3Zr2Sn25Nb titanium alloys, mechanical ball milling and spark plasma sintering techniques were used to prepare biofunctional Ti3Mo3Zr2Sn25Nb-based composites. Based on preparation process, microstructure evolution, mechanical properties, corrosion resistance and in vitro biological Research on compatibility and other aspects; in order to improve the medical Ti3Mo3Zr2Sn25Nb titanium alloy with high elastic modulus and poor biocompatibility, the (Ti3Mo3Zr2Sn25Nb)-χHA titanium alloy bio-bone implant was designed and prepared by mechanical ball milling and spark plasma sintering technology Material blocks, to investigate the effect mechanism of HA ceramic addition on the microstructure evolution, mechanical properties, corrosion resistance and biocompatibility of biological bone implant materials

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