THE ALUMINUM REDUCTION OF MAGNESIUM COMPOUNDS: III. THE VAPOR PRESSURE OF MAGNESIUM OVER THE SYSTEM Al–Mg2SiO4 (OLIVINE)

1963 ◽  
Vol 41 (3) ◽  
pp. 739-742 ◽  
Author(s):  
K. Grjotheim ◽  
O. Herstad ◽  
R. Skarbö ◽  
J. M. Toguri
Keyword(s):  
Phase Diagram ◽  
Vapor Pressure ◽  
Liquidus Line ◽  
Unstable System ◽  
Equilibrium System ◽  
Aluminum Reduction ◽  
Temperature Range ◽  
Magnesium Compounds ◽  
Aluminum Activity ◽  
Equilibrium Vapor Pressure

The equilibrium vapor pressure of magnesium over the reaction between olivine (Mg2SiO4) and aluminum was measured by means of the transportation method in the temperature range 943–1150 °C.It was concluded that olivine and aluminum form an unstable system which reacts completely according to the equation[Formula: see text]However, in the presence of excess aluminum, an Al–Si alloy results. This alloy in turn reacts with magnesium oxide according to the equilibrium[Formula: see text]The vapor pressure of magnesium over this equilibrium system was found to obey the equation[Formula: see text]The aluminum activity of the Al–Si alloy along the liquidus line of the silicon side of the phase diagram has been calculated. Within the temperature range 943–1150 °C this activity can be represented by the equation[Formula: see text]

THE ALUMINUM REDUCTION OF MAGNESIUM OXIDE: II. THE VAPOR PRESSURE OF MAGNESIUM OVER THE SYSTEM Al–MgO–CaO

1961 ◽  
Vol 39 (11) ◽  
pp. 2290-2294 ◽  
Author(s):  
K. Grjotheim ◽  
O. Herstad ◽  
J. M. Toguri
Keyword(s):  
Vapor Pressure ◽  
Magnesium Oxide ◽  
Equilibrium Pressure ◽  
Aluminum Reduction ◽  
Temperature Range ◽  
Equilibrium Vapor Pressure

The equilibrium vapor pressure of magnesium over the reaction between the calcined dolomite and aluminum was measured by means of the transportation method. In the temperature range 886–1035 °C, the reaction was found to proceed according to the equilibrium[Formula: see text]and the measured equilibrium pressure of magnesium can be expressed by the equation[Formula: see text]

THE ALUMINUM REDUCTION OF MAGNESIUM OXIDE: I. THE VAPOR PRESSURE OF MAGNESIUM OVER THE SYSTEM Al–MgO

1961 ◽  
Vol 39 (3) ◽  
pp. 443-450 ◽  
Author(s):  
K. Grjotheim ◽  
O. Herstad ◽  
J. M. Toguri
Keyword(s):  
Vapor Pressure ◽  
Diffraction Analysis ◽  
Magnesium Oxide ◽  
Log P ◽  
X Ray Diffraction ◽  
Aluminum Reduction ◽  
X Ray ◽  
Temperature Range ◽  
Reaction Proceeds ◽  
Equilibrium Vapor Pressure

The equilibrium vapor pressure of magnesium over the reaction between magnesium oxide and aluminum was measured by means of the transportation method. In the temperature range 850–1150 °C the results can be expressed by the equation log Pmm of Hg = −9617/T + 8.93. From X-ray diffraction analysis this reaction proceeds according to the equilibrium[Formula: see text]

Hydration Chamber for Jeolco 200 Kv Microscope

1970 ◽  
Vol 28 ◽  
pp. 542-543
Author(s):  
V. R. Matricardi ◽  
G. G. Hausner ◽  
D. F. Parsons
Keyword(s):  
Electron Microscope ◽  
Water Vapor ◽  
Vapor Pressure ◽  
Pressure Gradient ◽  
Room Temperature ◽  
List Type ◽  
Type Number ◽  
Equilibrium Vapor Pressure

In order to observe room temperature hydrated specimens in an electron microscope, the following conditions should be satisfied: The specimen should be surrounded by water vapor as close as possible to the equilibrium vapor pressure corresponding to the temperature of the specimen.The specimen grid should be inserted, focused and photo graphed in the shortest possible time in order to minimize dehydration.The full area of the specimen grid should be visible in order to minimize the number of changes of specimen required.There should be no pressure gradient across the grid so that specimens can be straddled across holes.Leakage of water vapor to the column should be minimized.

Equilibrium Vapor Pressure of Frozen Bovine Muscle

1966 ◽  
Vol 31 (2) ◽  
pp. 196-201 ◽  
Author(s):  
DAVID F. DYER ◽  
DEWEY K. CARPENTER ◽  
J. EDWARD SUNDERLAND
Keyword(s):  
Vapor Pressure ◽  
Bovine Muscle ◽  
Equilibrium Vapor Pressure

SiO Vapor Pressure in an SiO2 Glass/Si Melt/SiO Gas Equilibrium System

1999 ◽  
Vol 38 (Part 2, No. 10B) ◽  
pp. L1153-L1155 ◽  
Author(s):  
Xinming Huang ◽  
Kazutaka Terashima ◽  
Keigo Hoshikawa
Keyword(s):  
Vapor Pressure ◽  
Equilibrium System ◽  
Sio2 Glass
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