Witryna26 lip 2024 · 89 Zr is an emerging radionuclide with promising application in nuclear medicine for the non-invasive diagnosis of various cancers with PET imaging. This … WitrynaN2 - Commercial Zr, Nb and Ta have been purified by hydrogen plasma arc melting (HPAM) and the removal degree of impurities was compared with the results of thermodynamic estimations. In the case of Zr and Nb, 40-60% of the total amount of impurities was removed by Ar plasma melting and 60-80% by HPAM.
Oxygen impurity improving corrosion resistance of a Zr-based bulk ...
Witryna10 sie 2016 · O impurities are included, the ideal icosahedral clusters and Zr-centered Kasper polyhedra are seriously suppressed by the formation of O-centered MRO, which can lead to deterioration of GFA.... Witryna1 maj 1997 · Oxygen impurity is known to significantly decrease the undercooling of Zr-based MGs as oxygen-enriched crystals form and serve as heterogeneous nucleation sites for further crystallization [54]... blackstone india ceo
Formation of Zr-based bulk metallic glasses from low purity materials ...
Witryna11 cze 2024 · The luminescence of Bi 3+ activated La 2 Zr 2 O 7 is examined in this paper. The host material crystallizes in the pyrochlore structure [14] . The cubic pyrochlore structure for the oxides A 2 B 2 O 7 (space group Fd3m) can be considered to be derived from the fluorite structure (CaF 2 ) by removing one-eighth of the anions so … WitrynaIt is thought that impurity Zr acts as an inhibitor to suppress the grain growth of Mo during the sintering to produce the porous structure of the pellets. From these results, … Witryna7 kwi 2024 · (Sc,Zr) phase, and thereby enhance the heterogeneous nucleation of α-Al during solidification. In this paper, the nucleation and growth of primary Al 3 (Sc,Zr) phase has been investigated in high purity Al alloys and commercial purity Al alloys, with a special focus on the impurity effects. The nucleation and growth modes are also … blackstone indoor electric grill