Preflight diffusion experiments on liquid metals under 1g conditions for the FOTON-M2 mission

Shinsuke Suzuki*, Kurt Helmut Kraatz, Günter Frohberg, Ralca Roşu, Wolfgang Wendl, German Müller-Vogt

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)


We measured diffusion of up to 5% Ag in liquid Pb, using the Foton shear cell (designed and used for the FOTON-M2 mission). Since the density change of the alloy with composition has been reported to be very small but is not reliably known, we performed two arrangements of layering: (a) with PbAg on top and Pb below and (b) with Pb on top and PbAg below. The Berlin group did interdiffusion experiments from a "thick layer" of PbAg into "semi-infinite" Pb and the Karlsruhe group did the typical "interdiffusion" experiments with a diffusion couple of PbAg versus Pb. The results of both groups were equivalent, showing much lower D values for arrangement (b) than for (a). The lower values were even definitely lower than reference microgravity values from MIR/MIM and could be fitted by D = AT n with n about 2.2. We discuss the stability/instability by density layering depending on the arrangement.

Original languageEnglish
Title of host publicationInterdisciplinary Transport Phenomena in the Space Sciences
PublisherBlackwell Publishing Inc.
Number of pages15
ISBN (Print)1573316393, 9781573316392
Publication statusPublished - 2006 Sept
Externally publishedYes

Publication series

NameAnnals of the New York Academy of Sciences
ISSN (Print)0077-8923
ISSN (Electronic)1749-6632


  • Diffusion
  • FOTON satellite
  • Ground experiment
  • Liquid metal
  • Microgravity
  • PbAg
  • Shear cell

ASJC Scopus subject areas

  • General Neuroscience
  • General Biochemistry,Genetics and Molecular Biology
  • History and Philosophy of Science


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