Hafnium in a sentence

Hafnium(IV) chloride and hafnium(IV) iodide have some applications in the production and purification of hafnium metal.

The production of hafnium-free zirconium is the main source for hafnium. citation Hafnium oxidized ingots which exhibits thin film optical effects.

The most notable nuclear properties of hafnium are its high thermal neutron-capture cross-section and that the nuclei of several different hafnium isotopes readily absorb two or more neutrons apiece.

Egyptian glass consistently contained more hafnium and had lower isotopic ratios than glass produced in the Levant, the team found.

Trusted Firmware today announced that Hafnium, MbedTLS and the PSA Crypto Project transitioned into its project scope.

Commercial-quality zirconium for most uses still has a content of 1% to 3% hafnium.

Design and operation Instead of the movable hafnium -based control rods used in all of the other United States Naval reactors, reactivity in the S7G core was controlled by stationary gadolinium -clad tubes partially filled with water.

Extraction experiments from hydrochloric acid solutions using isotopes of rutherfordium, hafnium, zirconium, as well as the pseudo-group 4 element thorium have proved a non-actinide behavior for rutherfordium.

For the fluoride complexes, zirconium and hafnium tend to form hepta- and octa- complexes.

Garnet is another mineral that contains appreciable amounts of hafnium to act as a geochronometer.

Halogens react with it to form hafnium tetrahalides.

In the aqueous phase, the Rf 4+ ion hydrolyzes less than titanium(IV) and to a similar extent as zirconium and hafnium, thus resulting in the RfO 2+ ion.

Isotopes lighter than the stable lutetium-175 decay via electron capture (to produce isotopes of ytterbium ), with some alpha and positron emission ; the heavier isotopes decay primarily via beta decay, producing hafnium isotopes.

Liquid-liquid extraction processes with a wide variety of solvents were developed and are still used for the production of hafnium.

Occurrence Zircon crystal (2×2 cm) from Tocantins, Brazil Hafnium is estimated to make up about 5.8 ppm of the Earth 's upper crust by mass.

Precautions Care needs to be taken when machining hafnium because it is pyrophoric —fine particles can spontaneously combust when exposed to air.

Similar to zirconium and hafnium, an additional omega phase exists, which is thermodynamically stable at high pressures, but is metastable at ambient pressures.

Since rhenium was discovered in 1925, citation hafnium was the next-to-last element with stable isotopes to be discovered.

The desired properties of these alloys are a low neutron-capture cross-section and resistance to corrosion under normal service conditions. citation Efficient methods for removing the hafnium impurities were developed to serve this purpose.

Their neutron-absorbing properties differ strongly, however, necessitating the separation of hafnium from zirconium for nuclear reactors.