10,267 research outputs found
Process of casting heavy slips Patent
Freeze casting of metal ceramic and refractory compound powders into plastic slip
Oxidation-resistance Mechanism and Other Properties of Molybdenum Disilicide
The outstanding oxidation resistance of molybdenum disilicide at 2400 F and above was found to depend on the formation of a protective siliceous coating which a-cristobalie has been identified. Molybdenum disilicide is not inherently resistant to oxidation and in powdered form burns at low temperatures.Melting and casting experiments have demonstrated the decomposition of the material at the melting point. The room-temperature modulus of elasticity has been determined and electric-resistivity data are given to 2000 F
Different Scenarios for Critical Glassy Dynamics
We study the role of different terms in the -body potential of glass
forming systems on the critical dynamics near the glass transition. Using a
simplified spin model with quenched disorder, where the different terms of the
real -body potential are mapped into multi-spin interactions, we identified
three possible scenarios. For each scenario we introduce a ``minimal'' model
representative of the critical glassy dynamics near, both above and below, the
critical transition lin e. For each ``minimal'' model we discuss the low
temperature equilibrium dynamics.Comment: Completely revised version, 8 pages, 5 figures, typeset using
EURO-LaTeX, Europhysics Letters (in press
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