VACUUM REFINING OF NIOBIUM,
Abstract
Conclusions: As a result of vacuum refinding at 2300 to 2350 C, not only the adsorbed and disolved gases are removed from the Nb, but also such impurities as Pb, Si, and Fe; and Arc fusion of the refined Nb in neutral media purified by passage through fused Li protects the metal from contamination by impurities. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 27, 1961
- Accession Number
- AD0261821
Entities
People
- N. D. Tarassov
- R. A. Ul'yanov
- Ye. P. Nechiporenko
Organizations
- National Air and Space Intelligence Center