Manufacturing method of aluminium nitride and aluminum nitride prepared by the same
AssigneesAlcom, Senus Corp.
InventorsKon-Bae Lee, Jae-Pyoung Ahn, Hae Sung Kim
Life of this patent
Estimating the term…
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.
Claims8
A method of manufacturing aluminum nitride comprising the step of:
- heating a pure aluminum powder comprising a mixture of median particles sizes (D50);
- a first median particle size comprising D50=1.52 μm, a second median particle size comprising D50=4.58 μm and a third median particle size comprising D50=10.37 μm, respectively;
- to a fixed temperature in a nitrogen containing atmosphere at one atmospheric pressure for a duration of 1 hour so that a degree of nitridation of at least 93% is attained;
- wherein the fixed temperature comprises at least 700° C.;
- wherein a composition ratio of the first, second and third median particle sizes of the pure aluminum powder mixture comprises 25˜40 wt. %:25˜40 wt. %:20˜50 wt. %, respectively.
A method of manufacturing aluminum nitride comprising the step of:
- heating a pure aluminum powder comprising a mixture of median particles sizes (D50);
- a first median particle size comprising D50=1.52 μm, a second median particle size comprising D50=4.58 μm and a third median particle size comprising D50=10.37 μm, respectively;
- to a fixed temperature in a nitrogen containing atmosphere at one atmospheric pressure for a duration of 1 hour so that a degree of nitridation of at least 93% is attained;
- wherein the fixed temperature comprises at least 650° C.;
- wherein a composition ratio of the first, second and third median particle sizes of the pure aluminum powder mixture comprises 25 wt. %:25 wt. %:50 wt. %, respectively.
Dependencies are inferred from the claim text.