mg-si-ca-zn series magnesium alloy and its preparation method and application

A mg-si-ca-zn, magnesium alloy technology, applied in metal rolling, metal processing equipment, manufacturing tools, etc., can solve the problems of low mechanical properties, toxicity, etc.
CN110106413BActive Publication Date: 2021-06-04PEKING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
PEKING UNIV
Publication Date
2021-06-04

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Abstract

The invention discloses a Mg-Si-Ca-Zn series magnesium alloy, a preparation method and application thereof. The magnesium alloy of the present invention includes Mg-Si-Ca-Zn, the mass percentage of Si in the magnesium alloy is 0-1.0%, but excluding 0, the mass percentage of Ca is 0-1.0%, but excluding 0, Zn The mass percentage of is 2.0-3.0%, but 0 is not included. The magnesium alloy also includes trace elements, and the trace elements are at least one of strontium, manganese, phosphorus, zirconium, tin, iron, copper and rare earth elements; the mass percentage of the trace elements is 0-3 %, but not including 0. The mechanical strength of the Mg-Si-Ca-Zn series magnesium alloy of the present invention meets the strength requirements of medical implant materials, and the regulation and control of its degradation rate in vivo can be realized by regulating the content of added alloy elements. Experimental results show that it has no obvious toxicity to osteoblasts, has good biocompatibility, reduces the pain of patients, and increases postoperative safety and comfort.
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Description

technical field

[0001] The invention relates to a Mg-Si-Ca-Zn series magnesium alloy and a preparation method and application thereof, belonging to the field of medical metal materials. Background technique

[0002] Traditional medical metal materials such as stainless steel, cobalt-chromium-molybdenum alloy, titanium alloy, etc. have good mechanical properties and corrosion resistance, and have important social value and economic benefits. However, the long-term existence of these implants in the body may cause varying degrees of irritation to the surrounding tissues, which may cause a series of consequences. For example, the elastic modulus of traditional metal internal fixation materials is much higher than that of human bone, and its long-term existence will cause a "stress shielding" effect, resulting in delayed fracture healing and even induced secondary fractures. For cardiovascular stents, their long-term existence may induce intimal hyperplasia and lead to in-stent...

Claims

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