Manufacturing method of aluminium nitride and aluminum nitride prepared by the same
US10442692B2 · kind B2 · utility
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Key dates
| Filing date | May 26, 2016 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Jan 8, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/03
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to a method of manufacturing aluminum nitride and aluminum nitride prepared by the same. Pure aluminum powder having a median particle size (D50) of 1.52 μm was heated to a temperature in a range of 595° C.˜900° C. in a nitrogen containing atmosphere comprising nitrogen and argon gases, at atmospheric pressure for one hour to obtain aluminum nitride with a degree of nitridation exceeding 93%. According to the present invention aluminum nitride may be produced with high yield using a simple and inexpensive one-step heating method in a relatively short period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.