Claims
- 1. A powder comprising anisotropic chromium-containing particles, wherein said powder is produced by a method comprising:
(a) heating a starting chromium-containing powder comprising non-dendritic metal oxide, metal nitride, mixed metal oxide, metalloid oxide or metalloid nitride particles under conditions suitable for initial stage sintering, thereby forming a lightly sintered material; and (b) breaking the lightly sintered material, thereby forming a powder comprising anisotropic chromium-containing particles having irregular morphology, said particles comprising aggregated and fused non-dendritic metal particles and having an air-laid density which is lower than the air-laid density of said starting chromium-containing powder.
- 2. A powder comprising anisotropic chromium-containing particles, wherein said powder is produced by a method comprising:
(a) heating a starting chromium-containing powder comprising non-dendritic particles under conditions suitable for initial stage sintering, thereby forming a lightly sintered material, wherein the particles comprise a ceramic material that includes chromium; and (b) breaking the lightly sintered material, thereby forming a powder comprising anisotropic chromium-containing particles having irregular morphology, said particles comprising aggregated and fused non-dendritic metal particles and having an air-laid density which is lower than the air-laid density of said starting chromium-containing powder.
- 3. A metal powder comprising anisotropic chromium-containing particles having irregular morphology, said particles comprising aggregated and fused non-dendritic chromium-containing particles, wherein the particles comprise a metal oxide, a metal nitride, a mixed metal oxide, a metalloid oxide or a metalloid nitride.
- 4. A metal powder comprising anisotropic chromium-containing particles having irregular morphology, said particles comprising aggregated and fused non-dendritic chromium-containing particles, wherein the particles comprise a ceramic material that includes chromium.
RELATED APPLICATIONS
[0001] This application is a Divisional of Ser. No. 09/724,147, filed on Nov. 28, 2000, which is a Continuation of Ser. No. 09/168,795, filed on Oct. 8, 1998, which is a Divisional of Ser. No. 08/820,762, filed on Mar. 19, 1997, now Abandoned, which is a Divisional of Ser. No. 08/604,811, filed on Feb. 21, 1996, now U.S. Pat. No. 5,814,272. The entire teachings of the above applications are incorporated herein by reference.
Divisions (3)
|
Number |
Date |
Country |
Parent |
09724147 |
Nov 2000 |
US |
Child |
10405004 |
Mar 2003 |
US |
Parent |
08820762 |
Mar 1997 |
US |
Child |
09168795 |
Oct 1998 |
US |
Parent |
08604811 |
Feb 1996 |
US |
Child |
08820762 |
Mar 1997 |
US |
Continuations (1)
|
Number |
Date |
Country |
Parent |
09168795 |
Oct 1998 |
US |
Child |
09724147 |
Nov 2000 |
US |