SEMI-ANNUAL SUMMARY RESEARCH REPORT IN METALLURGY FOR JULY-DECEMBER, 1956

Technical Report · Fri Aug 23 04:00:00 EDT 1957

DOI:https://doi.org/10.2172/4341172· OSTI ID:4341172

Spedding, F. H.; Wilhelm, H. A.; Rogers, B. A.; Carlson, O. N.; Chiotti, P.; Peterson, D.; Smith, J. F.

Purification and Separation Studies. Brief reports of progress in Nb-- Ta and Hf--Zr separation are given, and investigations of a pyrometallurgical process for separating U and Th using Mg are described. Metal Preparation Studies. The following preparations were investigated: Nb, by C reduction of Nb/ sub 2/O/sub 5/; Tn, by Na reduction of ThCl/sub 4/; U-Nb alloy by bomb reduction of UF/sub 4/ and Na/sub 2/NbOF/sub 5/, and U-Nb phase diagram Zn-- Zr phase studies and vapor pressure of pure Mg are reported. Corrosion Studies. A study of steam corrosion of binary alloys of group VA and VIA metals is described. The effects of addition of Y on corrosion of some refractory metals were studied. Solid State Investigations. The folowing investigations are reported on: structure of Hf/sub 5/Sn/sub 3/; allotropic transformations in U; electronic specific heat of Ca metal; anisotropic thermal expansion of Zn; low-temperature properties of V; and structure or UZn/sub 9/. (For preccding period see ISC- 759.) (T.R.H.)

• Research Organization: Ames Lab., Ames, Iowa
• DOE Contract Number: W-7405-ENG-82
• NSA Number: NSA-12-003680
• OSTI ID: 4341172
• Report Number(s): ISC-835
• Country of Publication: United States
• Language: English

Related Subjects

CARBON
HAFNIUM ALLOYS
IMPURITIES
MAGNESIUM
MINERALOGY, METALLURGY, AND CERAMICS
NIOBIUM
NIOBIUM ALLOYS
NIOBIUM OXIDES
PREPARATION
REDUCTION
SEPARATION PROCESSES
SODIUM
TANTALUM ALLOYS
THORIUM
THORIUM CHLORIDES
URANIUM
URANIUM ALLOYS
ZIRCONIUM ALLOYS