High-plasticity rapidly-degradable Mg-Li-Gd-Ni alloy and preparation method thereof
US11926885B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2022 |
| Grant date | Mar 12, 2024 |
| Priority date | — |
| Expiry date | Jun 9, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present disclosure provides a high-plasticity rapidly-degradable Mg—Li—Gd—Ni alloy, including the following chemical elements by mass percentage: 1.0-10.0% of Gd, 0.2-2.0% of Ni, 5.5-10% of Li, and the rest of Mg and inevitable impurities. The impurities have a total content less than or equal to 0.3%. The present disclosure further provides a preparation method of the high-plasticity rapidly-degradable Mg—Li—Gd—Ni alloy. The high-plasticity rapidly-degradable Mg—Li—Gd—Ni alloy provided by the present disclosure constructs an α-Mg+β-Li dual-phase matrix structure by introducing β-Li with a body-centered cubic (BCC) structure with relatively more slip systems to improve plasticity of the alloy, then adds a certain amount of Gd element to weaken texture and promote non-basal plane slip, and further improves plasticity. In addition, by introducing the high-potential Ni-containing LPSO phase, a large potential difference with α-Mg and β-Li is formed to increase the degradation performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.