The pressure medium as a solid-state oxygen buffer

Authors
Dobson, DP Brodholt, JP
Citation
Dp. Dobson et Jp. Brodholt, The pressure medium as a solid-state oxygen buffer, GEOPHYS R L, 26(2), 1999, pp. 259-262
Citations number
6
Categorie Soggetti
Earth Sciences
Journal title
GEOPHYSICAL RESEARCH LETTERS
ISSN journal
00948276 → ACNP
Volume
26
Issue
2
Year of publication
1999
Pages
259 - 262
Database
ISI
SICI code
0094-8276(19990115)26:2<259:TPMAAS>2.0.ZU;2-P
Abstract
We present a simple method to buffer oxygen fugacity at high pressures and high temperatures where the traditional 'double capsule' method is inapprop riate. The pressure medium is doped with a metal which partially reacts wit h the free oxygen in the pore spaces of the, cell. The resultant finely int ergrown metal-metal oxide assemblage buffers the oxygen fugacity in the sam ple as long as the capsule and furnace materials are oxygen permeable.