DECOMPOSITION OF SPINEL MgAl2O4 AT EXTREMELY HIGH PRESSURE.

Eiji Otani, Hiroshi Sawamoto, Kazuaki Masaki, Mineo Kumazawa

Research output: Contribution to conferencePaperpeer-review

9 Citations (Scopus)

Abstract

The decomposition of spinel MgAl//2O//4 into oxide mixture is shown experimentally to take place at the pressure between 200 and 300 kbar by means of MASS-318 type pressure generating apparatus. The phase boundary of this reaction is calculated to be 153 kbar at 1000 degree C based on the reliable thermodynamic data. The presence of discrepancy in the equilibrium pressures between MgAl//2O//4 and the isochemical oxide mixture illustrates the necessity of developing the method of accurate pressure determination at the extremely high pressure and high temperature.

Original languageEnglish
Pages185-189
Number of pages5
Publication statusPublished - 1975 Jan 1
EventInt Conf on High Pressure, 4th, Proc - Kyoto, Jpn
Duration: 1974 Nov 251974 Nov 29

Other

OtherInt Conf on High Pressure, 4th, Proc
CityKyoto, Jpn
Period74/11/2574/11/29

ASJC Scopus subject areas

  • Engineering(all)

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