FBD Zirconium Oxide Composite

Zirconia fibres

Overview: FBD Zirconium Oxide Composite

FBD is our strongest, highest density, premium product of the Zircar Zirconia range. FBD boards and cylinders are rigid refractory structures composed of ZYBF bulk fibres stabilized with yttria. Fibres used to manufacture FBD undergo multiple processing and heat treatments. It is composed of highly sintered fibre with the shortest fibre length contained in any of our rigid ZrO2 products. The finished FBD product is a tightly bonded, nearly dust free, hard, strong fibrous ceramic.

They have extremely high stability for use as high as 2,000 °C and can be exposed to significantly higher temperatures, depending on the application. It has good hot strength up to 1,700 °C, and can used as protection sleeve, insulation for industrial furnaces or setter for loads up to twice its weight. This product can be machined with conventional tooling.

Applications of FBD Zirconium Oxide Composite

  • Gasketing in high temperature wind tunnels.
  • Insulation for laser machining applications
  • Hot face insulation in solar thermochemical reactors
  • Crucible insulation in crystal growth stations
  • Oxygen / carbon protector sleeve in industrial sensors

Available FBD Zirconium Oxide Composite

FBD

Dimensions

Square Board

from 76.2 x 76.2x 6.3 mm
to 304.8 x 304.8 x 38.1 mm

Rectangular Board

from 228.6 x 457.2 x 6.3 mm
to 228.6 x 457.2 x 76.2 mm

Cylinder

from 12.7 x 19.0 x 152.4 mm
to 203.2 x 254.0 x 152.4 mm

The dimensions depend on the article number.
Customized designs are available on request.

Technical Data of FBD Zirconium Oxide Composite

Property

Unit

FBD

Composition

ZrO2*

Wt. % 

90

Y2O3

10

Typical Impurities

HfO2

Wt. %

1 to 2

SiO2

0.12

TiO2

0.14

CaO

0.09

MgO

0.03

Fe2O3

0.04

Al2O3

0.01

Na2O

0.01

Colour

white

Bulk Density

g/cm3

1.4

Porosity

%

76

Operating Temperature**

°C

2,000

Peak Temperature

°C

2,200

Melting Point

°C

2,590

Flexural Strength, Normal to Fibre Plane

MPa

8.27

Compressive Strength, Normal to Fibre Plane, at 10 % compression

MPa

5.52

Outgassing in Vacuum

Nil

Dilatometric Softening Temperature

°C at 10 psi

1,400

Thermal Expansion Coefficient RT to 1,180 °C (⊥ to Thickness)

10-6.K-1

10.7

Linear Shrinkage 
(⊥ to Thickness)

1 hr at 1,650 °C

%

0.0

24 hrs at 1,650 °C

0.9

Thermal Conductivity (// to Thickness)

at 400 °C

Wm-1.K-1

0.24

at 800 °C

0.26

at 1,100 °C

0.31

at 1,400 °C

0.33

at 1,650 °C

0.35

*1-2 % weight hafnia (HfO2) occurs naturally with zirconia (ZrO2) and does not affect performance.
**Maximum use temperature is dependent of variables such as chemical environment and stresses; both thermal and mechanical.



Physical variables included in this documentation are provided by way of indication only and do not, under any circumstances, constitute a contractual undertaking. Please contact our technical service if you require any additional information.

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FBD Zirconium Oxide Composite


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Technical datasheet: Zirconium Oxide Fibre


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