Title:
MG-ZN-SN SERIES MAGNESIUM ALLOY WITH CONTROLLABLE DEGRADATION RATE, PREPARATION METHOD AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/042745
Kind Code:
A1
Abstract:
The disclosure belongs to the technical field of metal materials and relates to an Mg-Zn-Sn series magnesium alloy with a controllable degradation rate, a preparation method therefor, and an application thereof. The Mg-Zn-Sn series magnesium alloy comprises the following elementary composition by weight percentage: 0.9%-5.0% of Zn, 0.5%-1.9% of Sn, and the remainder comprising Mg and unavoidable impurities. The preparation method of the alloy comprises: selecting raw materials of each component according to a composition ratio of the Mg-Zn-Sn series magnesium alloy and smelting the same under a protective atmosphere, the smelting temperature being 690-790 °C; after the components of the alloy are completely melted, reducing the temperature to 630-680°, and letting the components stand at a constant temperature for 30-120 minutes, followed by cooling to obtain an ingot of the Mg-Zn-Sn series magnesium alloy. A combined technique of controlling the alloy composition and melting process effectively controls the content, the morphology, and distribution of the secondary phase in the alloy, significantly improves the corrosion resistance of the alloy, and achieves excellent control of the degradation rate.
Inventors:
WANG JINGFENG (CN)
JIANG WEIYAN (CN)
PAN FUSHENG (CN)
JIANG WEIYAN (CN)
PAN FUSHENG (CN)
Application Number:
PCT/CN2019/094179
Publication Date:
March 05, 2020
Filing Date:
July 01, 2019
Export Citation:
Assignee:
UNIV CHONGQING (CN)
International Classes:
C22C23/00; A61L27/04; A61L27/58; A61L31/02; A61L31/14; C22C1/02; C22C23/04
Foreign References:
| CN108823476A | 2018-11-16 | |||
| CN101161840A | 2008-04-16 | |||
| CN1995425A | 2007-07-11 | |||
| JPH073374A | 1995-01-06 |
Other References:
WANG, JIANLI ET AL.: "Effect of Sn Element on Microstructure and Corrosion Resistance of Biomedical Mg-4.5Zn-Sn Alloys", TRANSACTIONS OF MATERIALS AND HEAT TREATMENT, vol. 39, no. 6, 30 June 2018 (2018-06-30), pages 27
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
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