Zirconium and hafnium with low oxygen and iron
US4722827A · kind A · utility
6Cited by
13References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1985 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | Sep 26, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S376/90
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This is a high quality zirconium or hafnium sponge, a fuel element cladding liner having material of the quality of this sponge and a process utilizing this quality sponge to fabricate liner material for lined fuel element cladding. The sponge contains 250-about 350 ppm of oxygen impurity, 50-300 ppm of iron impurity, and a total of 500-1,000 ppm of impurity. This material is much purer than conventional sponge and approaches the quality of crystal bar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.