A kind of pearl powder/magnesium alloy quasi-natural bone composite material and its preparation method

Abstract

The invention discloses a pearl powder / magnesium alloy quasi-natural bone composite material and a preparation method thereof. The pearl powder / magnesium alloy quasi-natural bone composite material is calculated by weight percentage, that is, pearl powder:magnesium alloy powder is 2-20%:80 The proportion of -98% is prepared by sintering the mixture of magnesium alloy powder and pearl powder in a plasma discharge sintering furnace at a controlled temperature of 300-450°C, keeping it warm for 0-5min, and then naturally cooling to room temperature. The magnesium alloy ZK61 magnesium alloy powder or high-purity atomized spherical magnesium powder with a particle size of 5nm-100nm. The pearl powder / magnesium alloy quasi-natural bone composite material of the present invention has high corrosion resistance, reduces the degradation rate of magnesium alloys, and achieves uniform corrosion in simulated human body fluids, which is convenient for evaluating the degradation cycle of biological implant materials and improving magnesium alloys. The value of alloys in the field of medical implant materials.

Description

technical field [0001] The invention belongs to the field of biomedical implant materials, in particular to a bone replacement material containing pearl powder, that is, a magnesium alloy / pearl powder quasi-natural bone composite material and a preparation method thereof. Background technique [0002] At present, the biometallic materials used clinically mainly include stainless steel, cobalt-chromium alloy and titanium alloy. Corrosion produces toxic ions that reduce their biocompatibility. For example: after 316L stainless steel is implanted into the human body, in the physiological system environment, problems such as crevice corrosion, friction corrosion and fatigue corrosion cracking may sometimes occur, and Ni2+, Cr3+ and Cr5+ will be released due to friction and wear, resulting in loosening of the prosthesis , eventually leading to implant failure; another example: whether it is the initial Ti6Al4V, or the subsequent Ti5Al2.5Fe and Ti6Al7Nb alloys, these alloys conta...

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Problems solved by technology

[0005] One of the purposes of the present invention is to solve the above-mentioned technical problems of medical magnesium and magnesium alloys that degrade too quickly after being implanted in the body, resulting in premature failure of the material and inability to evaluate the degradation cycle caused by uneven corrosion. And provide a kind of pearl powder / magnesium alloy quasi-natural bone composite material, this pearl powder / magnesium alloy quasi-natural bone composite material has higher corrosion resistance, reduces the degradation rate of magnesium alloy compared with traditional magnesium alloy, realizes slow speed Uniform corrosion effect, easy to evaluate the degradation cycle of biological implant materials, and improve the value of magnesium alloys in the field of medical implant materials