HIGH DENSITY W-UO$sub 2$ BY ACTIVATED SINTERING

Technical Report · Tue May 01 04:00:00 EDT 1962

OSTI ID:4803568

Lenz, W H; Mundinger, P R

Activated sintering of Ni-doped W powders in hydrogen was confirmed at temperatures as low as 1100 deg C. The presence of considerable UO/sub 2/, however, causes the Ni additive to lose much of its effect. The relative merits of Ni and/or TiO/sub 2/ additives as activators in W-50 vol% UO/sub 2/ mixtures were investigated with regard to particle size and sintering cycle. At a temperature of 1700 deg C some of these W-50 vol% UO/sub 2/ compositions could be sintered to near theoretical density in 1 to 4 hr. The effect of hydrogen and vacuum atmospheres on the sintered density of these materials was compared to similar effects observed with W and Re powders. (auth)

• Research Organization: Los Alamos Scientific Lab., N. Mex.
• DOE Contract Number: W-7405-ENG-36
• NSA Number: NSA-16-027601
• OSTI ID: 4803568
• Report Number(s): LAMS-2716
• Country of Publication: United States
• Language: English

Related Subjects

CERMETS
DENSITY
GRAIN SIZE
HYDROGEN
IMPURITIES
METALS, CERAMICS, AND OTHER MATERIALS
NICKEL
POWDERS
RHENIUM
SINTERING
TEMPERATURE
TITANIUM OXIDES
TUNGSTEN
URANIUM DIOXIDE
VACUUM