Bulk amorphous spheres of Pd77.5Si16.5Cu6, l.5 mm in diameter, have been produced in free-fall containerless solidification. The experiments were conducted in the 32-m drop tube at Marshall Space Flight Center. The samples appear to be at least as stable (if not more so) as those produced during water quench.
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Steinberg et al. (1981) studied this question.
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