Metal wick material with hierarchical porous structures and its fabrication method
US12162071B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2023 |
| Grant date | Dec 10, 2024 |
| Priority date | — |
| Expiry date | Jul 10, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A metal wick material with hierarchical porous structures, which comprises primary pores, secondary pores, and tertiary pores, wherein the pore sizes of the primary pores are greater than those of the secondary pores and the pore sizes of the secondary pores are greater than those of the tertiary pores; the primary pores are obtained by 3D printing, the secondary pores are obtained by volatilizing a binder during a water bath heating process; and the tertiary pores are obtained by forming pores by diffusion and connection among metal powder particles during sintering. A method for fabricating the metal wick material having hierarchical porous structure, comprising: fabricating ordered primary pores having a three-dimensional network structure by a new-type powder extrusion 3D printing process; and then forming secondary pores and tertiary pores inside a macroporous framework by using subsequent treatment processes such as water bath heating and sintering, thus constructing a three-stage pore material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.