Densified molybdenum metal powder
View Patent ↗Densified molybdenum metal powder. Densified molybdenum metal powder has substantially generally spherical particles, surface-area-to-mass ratio of no more than about 0.5 m 2 /g as determined by BET analysis, and a flowability greater than about 32 s/50 g as determined by a Hall Flowmeter.
1. A densified molybdenum metal powder comprising:
particles of molybdenum metal having a surface-area-to-mass ratio of no more than about 0.5 m 2 /g as determined by BET analysis, a total weight percent of oxygen less than about 0.05%, and a flowability value less than about 32 s/50 g as determined by a Hall Flowmeter, said particles comprising a densified form of a molybdenum metal powder precursor material having a surface-area-to-mass ratio of between about 1 m 2 /g and about 4 m 2 /g, as determined by BET analysis, and a flowability of between about 29 s/50 g and about 86 s/50 g as determined by a Hall Flowmeter.
2. The densified molybdenum metal powder of claim 1 further comprising a tap density of at least about 3 g/cm 3 .
3. The densified molybdenum metal powder of claim 1 further comprising a Scott density of at least about 2 g/cm 3 .
4. The densified molybdenum metal powder of claim 3 wherein said molybdenum metal powder precursor material further comprises particles having an average size of about 60 μm.
5. The densified molybdenum metal powder of claim 1 wherein at least about 45% of said particles of molybdenum metal have a particle size larger than a size +140 standard Tyler mesh sieve.
6. The densified molybdenum metal powder of claim 1 wherein said particles of molybdenum metal further comprise substantially generally spherical particles.
7. The densified molybdenum powder of claim 1 wherein said flowability value less than about 32 s/50 g further comprises flowability in a range from about 16 s/50 g to about 32 s/50 g.