Approach to new glasses through phase separation

Satoru Inoue, Akio Makishima, Hiroyuki Inoue, Kohei Soga, Tomoya Konishi, Tomoyoshi Asano

Research output: Contribution to journalConference articlepeer-review

18 Citations (Scopus)


The application of liquid-liquid phase separation to the preparation of new glasses has been demonstrated. The in situ observation of phase separation has been made on some borate liquids at 1-g (g ≡ gravitational field at Earth's surface) and under microgravity circumstances (drop tests) to estimate rates of phase separation. The liquid-liquid phase separation of barium borate liquids resulted in the precipitation of droplets of several tens of a micrometer in diameter, which was assumed to be applicable for the preparation of glass spheres, lens array, etc. The addition of rare earth oxide to the systems resulted in enriching the rare earth content of the precipitated droplets, indicating that the composition of the droplets would be modified by adding another oxide to melts. The microgravity circumstances decreased the phase separation rates and were found to be favorable for the preparation of glass spheres.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalJournal of Non-Crystalline Solids
Issue number1-3
Publication statusPublished - 2 Jun 1999
EventProceedings of the 1998 3rd Brazilian Symposium on Glasses and Related Materials - Bonito, MS, Braz
Duration: 25 Aug 199828 Aug 1998


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