Low oxygen refractory metal powder for powder metallurgy
US6261337A · kind A · utility
39Cited by
4References
15Claims
0Family size
Inventor
Key dates
| Filing date | Aug 19, 1999 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Aug 19, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2999/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
One step process for producing formed Ta/Nb powder metallurgy products using Ta and/or Nb hydride powders with an oxygen content greater than a target level, e.g., 300 ppm, heating the metal hydride in the presence of another metal having a higher affinity for oxygen, removing the other metal and any reaction byproducts, to form a metal powder with an oxygen content less than the target level and forming a metallurgical product from said oxygen reduced Ta/Nb powder with an oxygen content less than the target level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.