Assertion: hafnium | /r/HasProperty | rare
Facets:
value: relatively
type: DEGREE
value: with rare applications
type: OTHER
Source sentences:
text: Hafnium in the enviroment Hafnium ores are rare, but two are known: hafnon and alvite.
text: Hafnium is a rare element with rare applications:
text: Hafnium is relatively rare and it is predicted that the reserves of this metal could last less than 10 years if the demand for hafnium increases.
text: Hafnium is relatively rare and it is predicted that the world could run out of this element in the next 10 years.
text: Hafnium is a rare element with rare applications: - component of control rods for nuclear reactors - component of some alloys - getter in lamps and tubes - electrode for plasma cutters - hafnium dioxide was recently used as an electrical insulator in microprocessors - hafnium carbide has a very great point of melting (the most refractory compound known today) - possible use in weapons (USA)