SOME PHYSICAL PROPERTIES OF NEPTUNIUM METAL. II. A STUDY OF THE ALLOTROPIC TRANSFORMATIONS IN NEPTUNIUM

Journal Article · Thu Oct 01 04:00:00 EDT 1959 · Phys. and Chem. Solids

DOI:https://doi.org/10.1016/0022-3697(59)90211-2· OSTI ID:4173624

Lee, J A; Mardon, P G; Pearce, J H; Hall, R O.A.

The phase transformations in neptunium metal were studied by thermal analysis, dilatometry, and resistivity measurements. The values obtained were: alpha yields beta 280 plus or minus 5 deg C, beta yields gamma 577 plus or minus 3 deg C, and gamma yields liquid 637 plus or minus 2 deg C. Roof the x-ray examination of the crystal structures of the three phases are compared with those of Zachariasen (Acta Cryst. 5, 660, 664(1952)). (auth)

• Research Organization: Atomic Energy Research Establishment, Harwell, Berks, Eng.
• NSA Number: NSA-14-007799
• OSTI ID: 4173624
• Journal Information: Phys. and Chem. Solids, Journal Name: Phys. and Chem. Solids Vol. Vol: 11
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALLOTROPY
CRYSTALS
ELECTRIC CONDUCTIVITY
EXPANSION
HIGH TEMPERATURE
LATTICES
MEASURED VALUES
METALS, CERAMICS, AND MATERIALS
NEPTUNIUM
NEPTUNIUM- BETA
NEPTUNIUM-ALPHA
NEPTUNIUM-GAMMA
PHASE DIAGRAMS
TEMPERATURE
THERMAL ANALYSIS
X RADIATION