Method of making aluminum nitride foam
US12319570B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2018 |
| Grant date | Jun 3, 2025 |
| Priority date | — |
| Expiry date | Apr 8, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/96
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Porous aluminum nitride (AlN) provides a greater surface area and higher permeability, which is especially desirable for advanced functional application. Porous or bulk aluminum nitride is very difficult to manufacture due mainly to its high melting point (e.g., 2200 degrees Celsius). A new processing method synthesizes porous aluminum nitride through a complete transformation from porous aluminum using a remarkably low nitriding or sintering temperature. The manufactured porous aluminum nitride foam can be used for such applications as filters, separators, heat sinks, ballistic armor, electronic packaging, light- and field-emission devices, and highly wear-resistant composites when infiltrated with metal such as aluminum, titanium, or copper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.