FUNDAMENTAL AND APPLIED RESEARCH AND DEVELOPMENT IN METALLURGY. Progress Report to United States Atomic Energy Commision for August 1961

Technical Report · Tue Nov 28 04:00:00 EST 1961

OSTI ID:4821363

Compacts of ruthenium, tungsten, anmd hafnium were made at pressures of approximately 30,000 psi. Servicirg of the arc melter was completed. The use of a polentiostat in microstructure studies is discussed. Crack formation in thick oxide films of zirconium by decoration with HCl was studied. Tests indicated that the exposure time necessary for the decoration of cracks would be of the order of 4 to 6 hr at 700 deg C. A limited amount of volatile chloride of foreign metals was reacted with the oxide film of a preoxidized zirconium coupon. All specimens prepared in this manner exhibited poorer corrosion resistance than the zirconium standard coupon. Zone-refined beryllium crystals of high purity were produced with controlled orientation by fusing an oriented 'seed'' crystal to the material to be zone-refined at the beginning of a zone-refining pass. (M.C.G.)

• Research Organization: Nuclear Metals, Inc., Concord, Mass.
• NSA Number: NSA-16-005715
• OSTI ID: 4821363
• Report Number(s): NMI-2098
• Country of Publication: United States
• Language: English

Related Subjects

BERYLLIUM
COMPACTING
CORROSION
CRACKS
CRYSTALS
ELECTRIC ARCS
FILMS
HAFNIUM
HYDROCHLORIC ACID
IMPURITIES
MELTING
METALLURGY
METALS, CERAMICS, AND OTHER MATERIALS
OXIDES
PRESSURE
REFINING
RUTHENIUM
THICKNESS
TUNGSTEN
ZIRCONIUM
ZONES