An Internally Heated, Rapid-quench, High-pressure Vessel

John R. Holloway, Jacqueline Eaby Dixon, Alison R. Pawley

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Abstract

A pressure vessel and furnace system were desigrred for rapid-quench operation while maintaining the advantages of sample size and hydrostatic loading inherent in an internally heated, Ar-medium vessel (IHPV). The rapid quench is achieved using the quench-wire technique common to atmospheric pressure quench furnaces; the sample capsules fall from their position in the furnace hot spot into room-temperature Ar gas at the bottom of the vessel chamber. The quench rate is several hundred degrees Celsius per second compared to a rate of about 3 °C/s in conventional IHPVs. The system operates at temperatures up to at least 1300 °C and pressures up to 1500 bars, conditions specifically chosen to study solubilities of H 2 O, CO 2 , and other volatiles in low-viscosity silicate melts that have shown severe quench effects in IHPVs having normal quench rates. Loading and unloading the pressure system is relatively simple and fast.

Original languageAmerican English
JournalAmerican Mineralogist
Volume77
StatePublished - Jun 1 1992
Externally publishedYes

Disciplines

  • Life Sciences

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