Molybdenum Silicide
Typical Properties:
Appearance: Dark gray crystalline powder.
Specific Gravity: 6.31 (20 oC)
Melting Point: 1870-2030 oC (not affected by air up to 1648 oC)
Formula: MoSi2
Properties: Not attacked by most inorganic acids, including aqua regia, but very soluble in hydrofluoric and nitric acids. Has high stress-rupture strength.
Derivation: By fusion of hydrogen-reduced molybdenum with silicon.
Forms: Powder. May be coated on materials by vapor deposition and by flame spraying.
Hazard: Tolerance (as Mo), 5 mg/m3.
Uses: Electrical resistors, protective coatings at high temperatures, engine parts in space vehicles (molybdenum coated with molybdenum disilicide.)
Fisher Size: 5.61 micron
Analysis:
Mo 63.42%
Impurities (Percent):
Al 0.08
Ca 0.001
Cr 0.001
Cu <0.01
Fe 0.02
Mg <0.01
Mn 0.01