A kind of degradable biomedical zn-al-mg-nd zinc alloy and preparation method thereof
A zn-al-mg-nd, biomedical technology, applied in the field of degradable biomedical alloys and their preparation, can solve the problems of poor plastic deformation ability, poor deformation ability, composition segregation, etc., achieve good strength and improve mechanical properties , the effect of uniform organization
Active Publication Date: 2021-03-09
XIANGTAN UNIV
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Problems solved by technology
[0004] The purpose of the present invention is to solve the problems that existing biomedical Zn alloys have poor plastic deformation ability, low yield and traditional metal smelting and casting methods are prone to produce pores, shrinkage porosity, composition segregation, resulting in poor deformation ability, and provide a Degradable biomedical Zn-Al-Mg-Nd zinc alloy and preparation method thereof
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specific Embodiment approach 1
[0041]Specific embodiment 1: This embodiment is a degradable biomedical Zn-Al-Mg-Nd zinc alloy consisting of Al: 1% to 4%, Mg: 0.1% to 1%, and Nd: 0.05% to 2%, the sum of impurity elements ≤ 0.43%, and the balance Zn.
specific Embodiment approach 2
[0042] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that a degradable biomedical Zn-Al-Mg-Nd zinc alloy consists of Al: 1%-2%, Mg: 0.1%- 0.5%, Nd: 0.05% to 0.15%, the sum of impurity elements ≤ 0.43%, and the balance Zn. Other steps are the same as in the first embodiment.
specific Embodiment approach 3
[0043] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that a degradable biomedical Zn-Al-Mg-Nd zinc alloy consists of Al: 2% to 4%, Mg according to the mass fraction of elements : 0.5% to 1%, Nd: 0.15% to 0.5%, the sum of impurity elements ≤ 0.43%, and the balance Zn. Other steps are the same as those in Embodiment 1 or 2.
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Abstract
A degradable biomedical Zn-Al-Mg-Nd zinc alloy and a preparation method thereof, which relate to a degradable biomedical alloy and a preparation method thereof. The purpose of the present invention is to solve the problems of poor plastic deformation ability of the existing biomedical Zn alloy, low yield and poor deformation ability caused by traditional metal smelting and casting methods which easily produce pores, shrinkage porosity and component segregation. Method: 1. vacuum smelting; 2. billet making by spray deposition; 3. hot extrusion; 4. heat treatment; 5. pickling and polishing; Degradation of biomedical Zn‑Al‑Mg‑Nd zinc alloys. The invention adopts suitable alloy elements and proportions to improve the plastic deformation ability of the Zn alloy and obtain a biomedical zinc-based alloy with better performance. The invention can obtain a degradable biomedical Zn-Al-Mg-Nd zinc alloy.
Description
technical field [0001] The invention relates to a degradable biomedical alloy and a preparation method thereof. Background technique [0002] As a new biodegradable medical metal material, bio-Zn alloy has great development prospects. In 2015, Patrick K.Bowen et al. implanted pure zinc wire into the abdominal aortic cavity of SD rats for up to 6.5 months. The results showed that metal Zn has good biocompatibility and can be used for biomedical preparation. Great potential to degrade vascular stents. Compared with various metal implant materials that have been put into clinical use now, Zn alloy mainly has the following advantages: (1) The standard electrode potential (-0.76V) of Zn is between Mg (-2.73V) and Fe (-0.44V ), its corrosion degradation rate is between the two, which can effectively overcome the defects of corrosion degradation rate of iron-based alloys and magnesium-based alloys. (2) Zn is an essential trace element for the human body. It plays an important ca...
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IPC IPC(8): C22C18/04C22C1/03B22D23/00C22F1/16C22F1/02C23G1/02B21C23/00B21C23/08
CPCB21C23/002B21C23/085B22D23/003C22C1/03C22C18/04C22F1/02C22F1/165C23G1/02
Inventor 刘洋刘志伟王兴朱戴博李筱萱华倩邓晶晶庄玉春胡西艳赵志雅
Owner XIANGTAN UNIV