Phase Equilibria in the System MgO—MgCr 2 O 4
1964; Wiley; Volume: 47; Issue: 1 Linguagem: Inglês
10.1111/j.1151-2916.1964.tb14636.x
ISSN1551-2916
AutoresAllen M. Alper, R. N. McNally, R. C. Doman, F. G. Keihn,
Tópico(s)Nuclear materials and radiation effects
ResumoThe liquidus, solidus, and subsolidus in the system MgO‐MgCrz04 were redetermined. Petro‐graphic studies indicated that 47 wt% Cr203 could enter into the periclase lattice at about 235OO C. X‐ray and optical data showed that the solid solution decreased to 32 wt% Cr202 at 2165OC, 11 wt% at 1600°C, 5 wt% at 1400°C, 2.5 wt% at 1200°C, and 0 wt% at 1000°C. Petro‐graphic studies also suggested that picrochromite could contain about 5 wt% MgO in solid solution. The liquidus was much higher than has been indicated on previously published phase equilibrium diagrams.
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