Shock temperature measurements in metals: new results for an Fe alloy

Jay D Bass, T. J. Ahrens, J. R. Abelson, T. Hua

Research output: Contribution to journalArticle

Abstract

The temperature of a Fe-Cr-Ni alloy (304 stainless steel) has been measured during shock compression using a high-speed radiometric technique. Experiments were performed on high-quality thick films deposited on sapphire and LiF windows. Data obtained with both Al2O3 and LiF windows are internally consistent, indicating that they remain transparent to high pressures and are thus suitable windows for shock temperature measurements. At the pressure of the inner core-outer core boundary, the melting point of 304 stainless steel is lower than that of pure Fe by ≃1450 K, as compared with only 110 K at 1 atm. These results demonstrate that upon alloying with Ni and Cr the melting point depression of Fe and thus material likely to comprise the inner core increases with increasing pressure. -from Authors

Original languageEnglish (US)
JournalJournal of Geophysical Research
Volume95
Issue numberB13
StatePublished - Jan 1 1990

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inner core
Temperature measurement
temperature measurement
melting
steel
Metals
shock
Stainless Steel
metals
melting point
stainless steel
sapphire
outer core
melting points
Melting point
stainless steels
metal
temperature
Aluminum Oxide
compression

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  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences (miscellaneous)
  • Palaeontology

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Shock temperature measurements in metals : new results for an Fe alloy. / Bass, Jay D; Ahrens, T. J.; Abelson, J. R.; Hua, T.

In: Journal of Geophysical Research, Vol. 95, No. B13, 01.01.1990.

Research output: Contribution to journalArticle

Bass, Jay D ; Ahrens, T. J. ; Abelson, J. R. ; Hua, T. / Shock temperature measurements in metals : new results for an Fe alloy. In: Journal of Geophysical Research. 1990 ; Vol. 95, No. B13.
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