Measurement of solutal and thermal diffusion subjected to rapid cooling in microgravity and crystal growth

Shigenao Maruyama, Toshiyuki Shibata, Katsuo Tsukamoto

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

In the process of crystal growth in solution under the normal gravity environment, double diffusive convection occurs due to the thermal and solutal gradients. The natural convection disturbs pure thermal and solutal diffusion field around a seed crystal, and the phase change phenomena in diffusion process can not be seen directly. Microgravity environments generated by parabolic flights for 20 s were used in order to suppress the double diffusive convection. In-situ measurement of the diffusion field was carried out using a real-time phase-shift interferometer. The saturated solution around a seed cryrtal of NaC103 was subjected to rapid cooling for the duration of microgravity by Peltier elements in the test cell. The test cell was subjected to a number of temperature profiles during microgravity experiments. In particular, the measured diffusion phenomena subjected to rapid cooling can not be explained by a conventional diffusion process nor kinetics of crystal growth.

Original languageEnglish
Pages (from-to)174-181
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume64
Issue number617
DOIs
Publication statusPublished - 1998 Jan

Keywords

  • Crystal growth
  • Double diffusion
  • Microgravity

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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