Ceria Textiles and Fibers, type CE




  • High Purity
  • High Temperature Stability
  • Low Thermal Conductivity
  • Excellent Thermal Shock Resistance
  • No Outgassing
  • Six Different Product Formats Offered
  • Available ‘Off the Shelf’

Ceria (cerium dioxide), CeO2, has a very high surface area and is ideal as a catalyst support. Our ceria fibers and textiles are made by the same unique Zircar process used for
manufacturing yttria-stabilized zirconia textiles. Our high purity ceria fiber and textiles are
offered in six different standard product forms; bulk fiber Type CeBF, two felts Types CeF-
50 and CeF-100 and three types of knit cloth Types CeK-15, CeW-15 and CeW-30.


Ceria Bulk Fiber and Felt are used in molten carbonate fuel cells.
Ceria Knit Cloth is used for product development of gas sensors.

Ceria Cloth Type CeK has the unique advantage of being a knit structure. This structure allows irregular shapes to be cut that do not unravel or fray. The SEM photomicrograph to the left shows the cut edge of Type CeK-15 and the individual filaments of the tricot knit threads.
The SEM photomicrograph above shows individual fibers arranged mostly parallel to each other in a Type CeK-15 thread. These filaments show the serrated nature of all “Zircar Process” fibers.
The SEM photomicrograph to the left shows the end of an individual fiber in Type CeW-15. The individual submicron crystallites which make up the near theoretical density fiber can be seen clearly.


CeF-100 CeW-30 CeW-15 CeK-15
Nominal Composition, Wt%
CeO2 99+ 99+ 99+ 99+
Al2O3 0.05 0.05 0.05 0.05
SiO2 0.04 0.04 0.04 0.04
Fe2O3 0.03 0.03 0.03 0.03
Melting Point, °C (°F) 2590 (4694) 2590 (4694) 2590 (4694) 2590 (4694)
Bulk Porosity, % 96 91 91 90
Bulk Density, g/cc (pcf) 0.27 (17) 0.67 (42) 0.67 (42) 0.69 (43)
Tensile Strength, g/cm width (lb/inch width) 28 (0.16) 34 (0.19) 23 (0.13) 18 (0.10)
LOI, 1 hr at 950°C (1742°F), Wt% 0.3 0.3 0.3 0.3
Outgassing Nil Nil Nil Nil
% Shrinkage, 1 hour at 1650°C (3002°F) 6 9 7 7


Type CE Fibers and Textiles are available in six standard product forms, which are listed in
the table below with their ordering item number. Please contact our Sales Department for
pricing and availability

Standard Item Description Ordering Item #
CeF-50, FELT, 12″ X 12″ X ~0.05″ E05A01
CeF-100, FELT, 12″ X 12″ X ~0.1″ E05B01
CeK-15, TRICOT KNIT CLOTH, 12″ X 12″ X ~0.015″ E05C01
CeW-15, SQUARE WEAVE CLOTH, 12″ X 12″ X ~0.015″ E05D01
CeW-30, SATIN WEAVE CLOTH, 12″ X 12″ X ~0.03″ E05E01
CeBF, BULK FIBER, 1 pound E05F01

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