Processes for preparing novel baddeleyite refractory articles

Production of a sintered reaction bonded silicon nitride insulat

Production of ceramic and ceramic-metal composite articles with

Production of ceramic fibers

Production of ceramic materials

Production of ceramic powders by emulsion precipitation processe

Production of non-explosive fine metallic powders

Production of sialon

Production of whisker-free Si.sub.3 N.sub.4 particulates by carb

Production process for silicon nitride sintered body

Production process of a sintered high-toughness alumina-based co

Proppant composition for gas and oil well fracturing

Prosthetic articles of zirconium oxide stabilized with yttrium o

Pulling roll material for manufacture of sheet glass

Pulverulent compositions and refractory article obtained with sa

Purification of carbothermally produced aluminum nitride

Purifying refractory metal borides

Pyrolytic boron nitride with columnar crystalline morphology