Method for preparing porous titanium-base composite material through composite ultrasonic vibration high-pressure twisting

Abstract

The invention relates to a method for preparing a porous titanium-base composite material through composite ultrasonic vibration high-pressure twisting, in particular to a method for preparing a nano-scale reproducible anti-bacterial medical porous titanium-base composite skeleton material through combination of a high-pressure twisting method and an ultrasonic vibration method. Through proper adjustment on the rotation speed, the downward pressing force, the twisting pressing time and the twisting pressing frequency of a pressing head and the vibration frequency and amplitude of ultrasonic vibration, the blocky nano-scale reproducible anti-bacterial medical porous titanium-base composite skeleton material uniform in grain refinement degree can be prepared.

Description

technical field [0001] The invention relates to a method for preparing a porous titanium-based composite material by composite ultrasonic vibration and high-pressure torsion, in particular to a method for preparing a nanoscale renewable antibacterial medical porous titanium-based composite bone material by combining the high-pressure torsion method and the ultrasonic vibration method. By properly adjusting the rotation speed, downforce, torsion time, torsion times, and ultrasonic vibration frequency and amplitude of the indenter, a bulk nanoscale renewable antibacterial medical porous titanium-based composite with uniform grain refinement can be prepared. bone material. Background technique [0002] Titanium, chemical symbol Ti, atomic weight 47.867, specific gravity 4.506-4.516, melting point 1668±4°C. Titanium is a silver-white transition metal with good high temperature resistance, low temperature resistance, strong acid resistance, strong alkali resistance, high strengt...

AI Technical Summary

Problems solved by technology

The existing processing technology prepares porous titanium by sintering, but the pore size and shape of the pores of the porous titanium prepared in this way cannot be controlled. What is produced is irregular pores with smooth pore walls, which reduces the strength and biocompatibility of titanium to varying degrees. degree and corrosion resistance

Porous titanium prepared by organic foam impregnation method has high porosity, but many pores are blocked, which reduces the biocompatibility of porous titanium

At present, the method of adding pore-forming agent materials can produce porous titanium with good performance in all aspects, but the selection of pore-forming agent materials is extremely strict.

[0004] Aiming at the problem that the performance of metal titanium needs to be improved and the performance of the currently prepared porous titanium is declining or the conditions are high, although the invention patent for manufacturing porous titanium has been proposed, it cannot be widely used in clinical medicine due to the limitation of geometric size and performance.

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