Accession Number : AD0266200

Title :   TUNGSTEN SHEET ROLLING PROGRAM

Descriptive Note : Interim technical progress rept. no. 2, 11 Apr-11 Aug 61 on Phase 2,

Corporate Author : UNIVERSAL-CYCLOPS STEEL CORP BRIDGEVILLE PA

Personal Author(s) : SCHOENFELD,W.J.

Report Date : OCT 1961

Pagination or Media Count : 99

Abstract : AD-2 6 2000N3 AD-266 201Div. 25, 4U (TIPTM/EJH) OTS price $2.60 Uppsala U. (Sweden). VIRIAL THEOREM AND COHESIVE ENERGIES OF SOLID , PARTICU DE CRIPTORS: (Soli *Solid s ate physics, *Cryst ls, Molecules, Atoms, *Ions, Chemical bonds, Adhesion, Quantum mechanics, Energy, Atomic energy levels, Atomic orbitals, Theory.) (*Alkali metal compounds, *Halide , L ITHIUM COMPOUNDS, Chlorides, Hydrides.) Thy ionic crystals, by A. Froman and P. O. Lowdin. 15 Sep 60, 23p. incl. tables (T ch ical no no 51) (Contract AF 61(052)351) (ARL-165)Unclas ifie report DE CRIPTORS: (Soli *Solid s ate physics, *Cryst ls, Molecules, Atoms, *Ions, Chemical bonds, Adhesion, Quantum mechanics, Energy, Atomic energy levels, Atomic orbitals, Theory.) (*Alkali metal compounds, *Halide , L ITHIUM COMPOUNDS, Chlorides, Hydrides.) The importance of t e virial theorem for the cohesive energies of solids is discussed. An interpr t tion of the cohe ive energy independe t of any particular model is proposed, taking into ccount he increase in he kinetic energy which follows when a compound is formed. Th e pirical co esive energies of the alkali halides obtained from the Born-Hab r cycle are used in making this interpretation, and a comparison is made with alternative interpretations. The quantum mechanical treatment of the cohesive energy is also discussed. A detailed numerical study has bee carried out for LiCl. (Author)

Descriptors :   *POWDER METALLURGY, *TUNGSTEN, CASTINGS, ELECTRIC ARCS, ELECTRODES, EXTRUSION, FORGE PRESSES, FORGING, HEAT TREATMENT, MANUFACTURING, MECHANICAL PROPERTIES, MELTING, MICROSTRUCTURE, PHYSICAL PROPERTIES, POWDER METALS, PROCESSING, ROLLING MILLS, SHEETS, VACUUM APPARATUS

Distribution Statement : APPROVED FOR PUBLIC RELEASE