Polycrystalline Fiber

PCWs are a specialist fiber with limited applications when temperatures of over 2300F are encountered and RCF will not work. PCWs are made predominantly of aluminum (content typically 72-99% in the form of oxide) with the remainder consisting of silicon. The fibers are manufactured by sol-gel technology using gel extrusion, spinning and/or drawing in controlled air streams, using equipment/processes specifically designed to produce fibers of defined dimensions. These are then subjected to high-temperature treatment to produce the required polycrystalline structure.

BLANKET
pdf Denka Alcen Blankets are made from high alumina fibers using the sol-gel process. They are doubled needled for exceptional strength and flexibility for use in applications up to 2912°F (1600°C) in oxidizing, reducing and chemically aggressing atmospheres. Applications include: reheat furnace linings, galvanizing furnace linings, reducing atmosphere furnace linings, aluminum furnaces and high firing ceramics kiln linings.
Classification Temp (F) DATA SDS
DENKA ALCEN BLANKET NBK80, NBK95 2912 pdf pdf