3D printing magnesium alloy material degradation test device and application

Abstract

The invention discloses a degradability test device for 3D printing magnesium alloy material, comprising a cardiac artificial chamber fixed on a support, a sample carrier, and a pretreatment device; the cardiac artificial chamber is divided into two independent regions by a no-pore artificial valve plate; a porous artificial valve plate is arranged in each independent region; the cardiac artificial chamber is also connected with a temperature detector, a hydrogen detector, a pressure sensor, a gas storage cylinder, a PH auto-control system and an alarm; a rotary shaft is arranged on the support; the sample carrier is mounted on the rotary shaft; the sample carrier includes a speed adjusting motor; a drill chuck is fixed to one end of an output shaft of the speed adjusting motor; a sample carrying unit is mounted on the drill chuck; the pretreatment device comprises an ultrasonic device, a drying box, and a weigher. The degradability test device for 3D printing magnesium alloy materialis high in automation level and enables degrading action of an implant material in a human body to be simulated more accurately, testing is convenient and fast, and the results are accurate and visual.

Description

technical field

[0001] The invention belongs to the field of biomedicine, and relates to a 3D printing magnesium alloy material degradability test device and application. Background technique

[0002] Magnesium alloy has the advantages of good mechanical properties, biocompatibility, and degradability in human physiological fluids, and is expected to become an ideal biomedical metal material. With the development of 3D printing technology, this technology can be used to prepare magnesium alloy biomaterials with fully fitted shapes and sizes to achieve customization. However, for materials implanted into the human body, such as bone nails, artificial bones, and scaffolds, during service, the study of the corrosion degradation behavior of implanted materials in the body is not only complicated in procedure, but also difficult to achieve in the harsh test environment and conditions. The extracorporeal circulation system simulates the corrosion degradation behavior of implanted...

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