The internal friction of lead doped with doble metals

Fast solute diffusion in solid and supersaturated solid solutions

“…In the former measurements it should be emphasized that the discrepancy between the two sets of experiments (Turner et al 1974;Sagues et al 1974) is not yet clear and needs further research. Later measurements of yield stress support, but do not prove, the hypothesis that dissolved atoms can exist in different defect states, particularly in associated states, for both high and low temperatures.…”

“…Experimental studies have also been carried out at lower temperatures than for the precipitation studies (quenching the Pb noble alloys to 77 K) using internal friction measurements (Turner and Nielsen, 1974;Sagues and Nowick, 1974), and tensile tests on Pb(Ag) alloys (Galligan and Huang, 1977;Yavari and Turnbull, 1980) and on Pb(Au) alloys (Yavari and Turnbull, 1982). In the former measurements it should be emphasized that the discrepancy between the two sets of experiments (Turner et al 1974;Sagues et al 1974) is not yet clear and needs further research.…”

Fast transport of cobalt in thorium

“…Evidence for solute-solute diplons has been reported (21-27), 28, X-ray and neutron diffraction studies on gold in lead (25,26) and possibly Mossbauer measurements on iron in yttrium (29) appear to indicate that a substantial fraction of the solute atoms are present as substitutionals, which suggest that a dissociative mechanism is operating. Internal friction experiments on copper, gold and silver in lead (30) appeared to indicate that these solute atoms may be associated with solute-solute or host-solute pairs, although the results of these experiments were not confirmed by Sagues and Nowick (31).…”

Fast diffusion and electromigration of metallic solutes in thorium

“…With this new criterion for interstitial solid solutions in mind, a number of experimental studies have been made to investigate the existence of interstitial-type defects in metallic systems. Experiments by Rossolimo and Turnbull [45], Turner et al [46,47], Ray et al [48] and Wartburn [49] have shown that for the gold-lead system, at least a fraction of the gold that is in solid solution is dissolved interstitially in the form of defects involving one gold atom. As the temperature is decreased or the concentra tion of gold increased, some of the gold becomes associated into higher order defects (defects involving more than one gold atom).…”