| Issue |
Europhys. Lett.
Volume 38, Number 4, May I 1997
|
|
|---|---|---|
| Page(s) | 285 - 290 | |
| Section | Condensed matter: structure, thermal and mechanical properties | |
| DOI | https://doi.org/10.1209/epl/i1997-00239-3 | |
| Published online | 01 September 2002 | |
Britte reaction of a high-temperature ion melt
Physikalisch-Vulkanologisches Labor - Pleicherwall 1, D-97070 Würzburg, Germany
Received:
6
December
1996
Accepted:
20
March
1997
An experimental study on explosive interaction between transparent
melt (
) and entrapped water (
) has been performed. Intense
explosions occurred, resulting from catastrophic fragmentation of the melt
and increasing heat transfer to the water in a cascading process. In earlier
experiments a quasi-isochoric brittle reaction of the melt was identified
to be the major explosion mechanism. Using a transparent melt, this brittle
reaction could directly be observed by high-speed cinematography. The pictures
revealed two fragmentation mechanisms: a) formation of leading cracks (mm
to cm scale) due to excess water pressure, and b) slower 
scaled melt
fragmentation induced by strain build-up in the melt during rapid cooling.
PACS: 62.10.+s – Mechanical properties of liquids / 62.20.Mk – Fatigue, brittleness, fracture, and cracks / 46.30.Nz – Fracture mechanics, fatigue, and cracks
© EDP Sciences, 1997
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