Microscopic structure of liquid lead–potassium alloys: Neutron-diffraction and molecular-dynamics investigation

Na–Pb liquid alloy structure at low lead concentrations: Neutron-diffraction studies

“…[6]). The similar result was obtained in the neutron-diffraction studies of Pb-K liquid alloys [19]: the S(Q) prepeak disappears at the potassium concentration lower than 10 at.%. Such a prepeak was observed for the Na-Pb alloys with the lead concentration of 20 at.% and higher [4].…”

Eutectic Na–Tl and Pb–Mg alloys as liquid-metal coolants for fast nuclear reactors

“…Shimkevich [10] has considered this solution in detail as well as the addition one at a mole fraction of potassium more than eutectic point. In this case, we get a forepeak found by Blagoveshchenskii et al [15] in neutron scattering and MD simulation (see fig. 4).…”

“…Blagoveshchenskii et al [15] have compared the simulation results with the experimental data of neutron scattering on these alloys (see figs 3 and 4). 3 shows that potassium particles (red points) don't form the dense liquid part which only consists of lead tetrahedrons at the mole fraction of potassium less than eutectic point (0.09).…”

“…For lead in liquid sodium, the strongest non-ideal effects are observed at 0.2 and 0.5 of its mole fraction [2][3][4] due to the existence of (Na 4 Pb) n and (NaPb) m clusters in the alloy. The first cluster is set conditions for the compound of Na 15 Pb 4 in this system and its managing the microstructure of liquid alloy in the sodium side of phase diagram. This effect is disclosed by a sharp change of the alloy entropy [3,5] and the increase of its electric resistance [1,6].…”

The microstructure of Pb–K liquid alloy from small-angle neutron scattering experiments

“…As a sample the liquid alloy Pb-K (75 at.% Pb + 25 at.% K, melting temperature T m = 643 K [8]) was used. The structure of this melt was known from the neutron diffraction experiments [9,10] and it was concluded that Zintle clusters and the similar ones with the size of $8-10 Å formed in it were not able to interfere with the supposed nanosized structures we intended to search.…”